Patent Application
20220354785
The present disclosure relates to flavored products intended for human use. The products are configured for oral use and deliver substances such as flavors and/or active ingredients during use. Such products may include tobacco or a product derived from tobacco, or may be tobacco-free alternatives.
Tobacco may be enjoyed in a so-called “smokeless” form. Particularly popular smokeless tobacco products are employed by inserting some form of processed tobacco or tobacco-containing formulation into the mouth of the user. Conventional formats for such smokeless tobacco products include moist snuff, snus, and chewing tobacco, which are typically formed almost entirely of particulate, granular, or shredded tobacco, and which are either portioned by the user or presented to the user in individual portions, such as in single-use pouches or sachets. Other traditional forms of smokeless products include compressed or agglomerated forms, such as plugs, tablets, or pellets. Alternative product formats, such as tobacco-containing gums and mixtures of tobacco with other plant materials, are also known. See for example, the types of smokeless tobacco formulations, ingredients, and processing methodologies set forth in U.S. Pat. No. 1,376,586 to Schwartz; U.S. Pat. No. 4,513,756 to Pittman et al.; U.S. Pat. No. 4,528,993 to Sensabaugh, Jr. et al.; U.S. Pat. No. 4,624,269 to Story et al.; U.S. Pat. No. 4,991,599 to Tibbetts; U.S. Pat. No. 4,987,907 to Townsend; U.S. Pat. No. 5,092,352 to Sprinkle, III et al.; U.S. Pat. No. 5,387,416 to White et al.; U.S. Pat. No. 6,668,839 to Williams; U.S. Pat. No. 6,834,654 to Williams; U.S. Pat. No. 6,953,040 to Atchley et al.; U.S. Pat. No. 7,032,601 to Atchley et al.; and U.S. Pat. No. 7,694,686 to Atchley et al.; US Pat. Pub. Nos. 2004/0020503 to Williams; 2005/0115580 to Quinter et al.; 2006/0191548 to Strickland et al.; 2007/0062549 to Holton, Jr. et al.; 2007/0186941 to Holton, Jr. et al.; 2007/0186942 to Strickland et al.; 2008/0029110 to Dube et al.; 2008/0029116 to Robinson et al.; 2008/0173317 to Robinson et al.; 2008/0209586 to Neilsen et al.; 2009/0065013 to Essen et al.; and 2010/0282267 to Atchley, as well as W02004/095959 to Arnarp et al., each of which is incorporated herein by reference.
Smokeless tobacco product configurations that combine tobacco material, nicotine components, and/or other active ingredients with various binders and fillers have been proposed more recently, with example product formats including lozenges, pastilles, gels, chews, melts, extruded forms, and the like. See, for example, the types of products described in US Patent App. Pub. Nos. 2008/0196730 to Engstrom et al.; 2008/0305216 to Crawford et al.; 2009/0293889 to Kumar et al.; 2010/0291245 to Gao et al; 2011/0139164 to Mua et al.; 2012/0037175 to Cantrell et al.; 2012/0055494 to Hunt et al.; 2012/0138073 to Cantrell et al.; 2012/0138074 to Cantrell et al.; 2013/0074855 to Holton, Jr.; 2013/0074856 to Holton, Jr.; 2013/0152953 to Mua et al.; 2013/0274296 to Jackson et al.; 2015/0068545 to Moldoveanu et al.; 2015/0101627 to Marshall et al.; and 2015/0230515 to Lampe et al., each of which is incorporated herein by reference. Oral products in similar formats and which are free of tobacco and/or nicotine components have also been proposed.
The present disclosure generally provides oral products and processes for preparing such oral products. The products are intended to impart a taste when used orally, and typically also deliver active ingredients to the consumer, such as nicotine. Such products may also impart desirable organoleptic properties when inserted into the oral cavity of a user of these products. Typically, the products disclosed herein may be in the form of a lozenge.
Accordingly, in one aspect, the disclosure provides oral products including a first sugar substitute in an amount of at least about 80 weight percent, a basic amine, and an organic acid, an alkali metal salt of an organic acid, or a combination thereof, wherein the oral product is in the form of a lozenge. Typically, at least a portion of the basic amine can be associated with at least a portion of the organic acid or the alkali metal salt thereof, the association being in the form of a basic amine-organic acid salt, an ion pair between the basic amine and a conjugate base of the organic acid, or both. In some embodiments, the organic acid may be characterized as having a certain logP value. For example, in some embodiments, the organic acid has a logP value of from about 1.0 to about 12.0 or from about 1.4 to 4.5, from about 2.5, to about 3.5, or from about 4.5 to about 8.0. In certain embodiments, the organic acid has a logP value of from about 4.5 to about 8.0 and the composition further comprises a solubility enhancer (e.g., such as glycerol or propylene glycol).
The amount of the organic acid within the oral lozenge products according to the disclosure may vary. In some embodiments, for example, the oral product may include from about 0.05, about 0.1, about 1, about 1.5, about 2, or about 5, to about 10, about 15, or about 20 molar equivalents of the organic acid, the alkali metal salt thereof, or the combination thereof, relative to the basic amine, calculated as the amine free base. In certain embodiments, the oral product may include from about 2 to about 10 molar equivalents of the organic acid, the alkali metal salt thereof, or the combination thereof, relative to the basic amine, calculated as the amine free base. In some embodiments, the organic acid is an alkyl carboxylic acid, an aryl carboxylic acid, an alkyl sulfonic acid, an aryl sulfonic acid, or a combination of any thereof. In one or more embodiments, the organic acid is octanoic acid, decanoic acid, benzoic acid, heptanesulfonic acid, or a combination thereof. In particular embodiments, the organic acid is benzoic acid. As noted herein, in some embodiments, the disclosure provides oral product comprising an alkali metal salt. In some embodiments, the alkali metal is sodium or potassium.
Some aspects of the disclosure provide oral lozenge products comprising and organic acid and a sodium salt of the organic acid. In certain embodiments, the organic acid is benzoic acid and the sodium salt of the organic acid is sodium benzoate. In one or more embodiments, a ratio of the organic acid to the sodium salt of the organic acid is from about 0.1 to about 10. Oral lozenge products as described herein may also be provided with varying pH levels. For example, in some embodiments, the pH of the oral product is from about 4.0 to about 9.0.
As noted above, the disclosed oral products and composition comprise a basic amine. In some embodiments, the basic amine is nicotine. In such embodiments, the nicotine is present in an amount of from about 0.001 to about 10% by weight of the oral product, calculated as the free base and based on the total weight of the oral product. Oral products according to the disclosure further comprise a sugar substitute in one or more embodiments. In certain embodiments, the sugar substitute is a non-hygroscopic sugar alcohol capable of forming a glassy matrix. For example, in particular embodiments, the first sugar substitute is isomalt. Typically, the sugar substitute is provided as a significant percentage of the overall composition of the oral product. For example, the first sugar substitute may be present in an amount of at least about 80 weight percent, at least about 85 weight percent, at least about 90 weight percent, or at least about 95 weight percent. In one or more embodiments as described herein, oral products according to the disclosure may also include a second sugar substitute in addition to the first sugar substitute. In some embodiments, the second sugar substitute may include maltitol or a maltitol syrup. Typically, the second sugar substitute is present in an amount from about 0.1 to about 2.0 weight percent.
Other aspects of the disclosure provide oral lozenge products that further comprise at least one active ingredient alternatively, or in addition, to the basic amine component. In some embodiments, oral products as described herein may include at least one active ingredient selected from the group consisting of a nicotine component, botanicals, nutraceuticals, stimulants, amino acids, vitamins, cannabinoids, cannabimimetics, terpenes, and combinations thereof. In still other embodiments, oral products of the disclosure may comprise a tobacco material, e.g., such as a particulate tobacco material or a tobacco extract. In certain embodiments, oral products of the disclosure may provide tobacco-free alternatives that do not intentional incorporate tobacco to any degree. To this end, some oral products according to the present disclosure may be referred to as being free of a tobacco material.
In one or more embodiments, oral lozenge products as described herein may include an additive selected from the group consisting of flavorants, sweeteners, additional filler components, emulsifiers, disintegration aids, humectants, salts, and mixtures thereof. For example, in certain embodiments, oral products of the disclosure may comprise a salt (e.g., such as sodium chloride, “NaCl”) present in an amount of at least about 0.5 weight percent. In certain embodiments, oral products provided herein may comprise a sweetener (e.g., such as sucralose) present in an amount of at least about 0.01 weight percent. Finally, as described herein, the overall water content of oral lozenge products according to the disclosure may vary and typically the water content of the oral product is in the range of about 0.1 weight percent to about 10 weight percent based on the total weight of the oral product. In some embodiments, the water content of the oral products may be about 10 weight percent or less, about 7 weight percent or less, about 5 weight percent or less, about 4 weight percent or less, about 3 weight percent or less, or about 2 weight percent or less.
The disclosure includes, without limitations, the following embodiments.
Embodiment 1: An oral product, the oral product comprising: a sugar substitute in an amount of at least about 80 weight percent; a basic amine; and an organic acid, an alkali metal salt of an organic acid, or a combination thereof, wherein: the organic acid has a logP value of from about 1.0 to about 12.0, and at least a portion of the basic amine is associated with at least a portion of the organic acid or the alkali metal salt thereof, the association in the form of a basic amine-organic acid salt, an ion pair between the basic amine and a conjugate base of the organic acid, or both; wherein the oral product is in the form of a lozenge.
Embodiment 2: The oral product of embodiment 1, wherein the organic acid has a logP value of from about 1.4 to about 4.5.
Embodiment 3: The oral product according to any of embodiments 1-2, wherein the organic acid has a logP value of from about 2.5 to about 3.5.
Embodiment 4: The oral product of embodiment 1, wherein the organic acid has a logP value of from about 4.5 to about 8.0 and wherein the composition further comprises a solubility enhancer.
Embodiment 5: The oral product of embodiment 4, wherein the solubility enhancer is glycerol or propylene glycol.
Embodiment 6: The oral product according to any of embodiments 1-5, comprising from about 0.05, about 0.1, about 1, about 1.5, about 2, or about 5, to about 10, about 15, or about 20 molar equivalents of the organic acid, the alkali metal salt thereof, or the combination thereof, relative to the basic amine, calculated as the amine free base.
Embodiment 7: The oral product according to any of embodiments 1-6, comprising from about 2 to about 10 molar equivalents of the organic acid, the alkali metal salt thereof, or the combination thereof, relative to the basic amine, calculated as the amine free base.
Embodiment 8: The oral product according to any of embodiments 1-7, wherein the organic acid is an alkyl carboxylic acid, an aryl carboxylic acid, an alkyl sulfonic acid, an aryl sulfonic acid, or a combination of any thereof.
Embodiment 9: The oral product according to any of embodiments 1-8, wherein the organic acid is octanoic acid, decanoic acid, benzoic acid, heptanesulfonic acid, or a combination thereof.
Embodiment 10: The oral product according to any of embodiments 1-9, wherein the organic acid is benzoic acid.
Embodiment 11: The oral product according to any of embodiments 1-10, wherein the alkali metal is sodium or potassium.
Embodiment 12: The oral product according to any of embodiments 1-11, comprising the organic acid and a sodium salt of the organic acid.
Embodiment 13: The oral product of embodiment 12, wherein the organic acid is benzoic acid and the sodium salt of the organic acid is sodium benzoate.
Embodiment 14: The oral product according to either of embodiments 12 and 13, wherein a ratio of the organic acid to the sodium salt of the organic acid is from about 0.1 to about 10.
Embodiment 15: The oral product according to any of embodiments 1-14, wherein the pH of the oral product is from about 4.0 to about 9.0.
Embodiment 16: The oral product according to any of embodiments 1-15, wherein the basic amine is nicotine.
Embodiment 17: The oral product of embodiment 16, wherein the nicotine is present in an amount of from about 0.001 to about 10% by weight of the oral product, calculated as the free base and based on the total weight of the oral product.
Embodiment 18: The oral product according to any of embodiments 1-17, wherein the sugar substitute is a non-hygroscopic sugar alcohol capable of forming a glassy matrix.
Embodiment 19: The oral product according to any of embodiments 1-18, wherein the sugar substitute is isomalt.
Embodiment 20: The oral product according to any of embodiments 1-19, wherein the sugar substitute is present in an amount of at least about 85 weight percent.
Embodiment 21: The oral product according to any of embodiments 1-20, wherein the sugar substitute is present in an amount of at least about 90 weight percent.
Embodiment 22: The oral product according to any of embodiments 1-21, wherein the sugar substitute is present in an amount of at least about 95 weight percent.
Embodiment 23: The oral product according to any of embodiments 1-22, further comprising a second sugar substitute.
Embodiment 24: The oral product according to embodiment 23, wherein the second sugar substitute is maltitol.
Embodiment 25: The oral product according either of embodiments 23 or 24, wherein the second sugar substitute is present in an amount from about 0.1 to about 2.0 weight percent.
Embodiment 26: The oral product according to any of embodiments 1-25, further comprising at least one active ingredient selected from the group consisting of a nicotine component, botanicals, nutraceuticals, stimulants, amino acids, vitamins, cannabinoids, cannabimimetics, terpenes, and combinations thereof.
Embodiment 27: The oral product according to any of embodiments 1-26, wherein the oral product is free of a tobacco material.
Embodiment 28: The oral product according to any of embodiments 1-27, further comprising an additive selected from the group consisting of flavorants, sweeteners, additional filler components, emulsifiers, disintegration aids, humectants, salts, and mixtures thereof.
Embodiment 29: The oral product according to any of embodiments 1-28, further comprising a salt present in an amount of at least about 0.5 weight percent.
Embodiment 30: The oral product of embodiment 29, wherein the salt is sodium chloride.
Embodiment 31: The oral product according to any of embodiments 1-30, further comprising a sweetener present in an amount of at least about 0.01 weight percent.
Embodiment 32: The oral product of embodiment 31, wherein the sweetener is sucralose.
Embodiment 33: The oral product according to any of embodiments 1-32, wherein the water content of the oral product is in the range of about 0.1 weight percent to about 10 weight percent based on the total weight of the oral product.
Embodiment 34: A multicomponent oral product, the oral product comprising: a first discrete portion and a second discrete portion; wherein the first discrete portion comprises a first composition, and wherein the second discrete portion comprises a second composition; wherein the first composition is different from the second composition; and wherein the oral product is in the form of a lozenge.
Embodiment 35: The multicomponent oral product of embodiment 34, wherein the first composition comprises: a sugar substitute in an amount of at least about 80 weight percent; a basic amine; and an organic acid, an alkali metal salt of an organic acid, or a combination thereof, wherein the organic acid has a logP value of from about 1.0 to about 12, and wherein at least a portion of the basic amine is associated with at least a portion of the organic acid or the alkali metal salt thereof, the association in the form of a basic amine-organic acid salt, an ion pair between the basic amine and a conjugate base of the organic acid, or both.
Embodiment 36: The multicomponent oral product of any one of embodiments 34-35, wherein the multicomponent oral product has an exterior outer surface, and wherein at least at least a portion of the exterior outer surface comprises the first discrete portion.
Embodiment 37: The multicomponent oral product of any one of embodiments 34-36, comprising from about 0.05, about 0.1, about 1, about 1.5, about 2, or about 5, to about 10, about 15, or about 20 molar equivalents of the organic acid, the alkali metal salt thereof, or the combination thereof, relative to the basic amine, calculated as the amine free base.
Embodiment 38: The multicomponent oral product of any one of embodiments 34-37, wherein the organic acid is an alkyl carboxylic acid, an aryl carboxylic acid, an alkyl sulfonic acid, an aryl sulfonic acid, or a combination of any thereof.
Embodiment 39: The multicomponent oral product of any one of embodiments 34-38, wherein the organic acid is octanoic acid, decanoic acid, benzoic acid, heptanesulfonic acid, or a combination thereof.
Embodiment 40: The multicomponent oral product of any one of embodiments 34-39, wherein the alkali metal is sodium or potassium.
Embodiment 41: The multicomponent oral product of any one of embodiments 34-40, comprising the organic acid and a sodium salt of the organic acid.
Embodiment 42: The multicomponent oral product of any one of embodiments 34-41, wherein a ratio of the organic acid to the sodium salt of the organic acid is from about 0.1 to about 10.
Embodiment 43: The multicomponent oral product of any one of embodiments 34-42, wherein the basic amine is nicotine.
Embodiment 44: The multicomponent oral product of any one of embodiments 34-43, wherein the nicotine is present in an amount of from about 0.001 to about 10% by weight of the oral product, calculated as the free base and based on the total weight of the oral product.
Embodiment 45: The multicomponent oral product of any one of embodiments 34-44, wherein the at least one sugar substitute is selected from the group consisting of erythritol, arabitol, ribitol, isomalt, maltitol, dulcitol, iditol, mannitol, xylitol, lactitol, sorbitol, and combinations thereof.
Embodiment 46: The multicomponent oral product of any one of embodiments 34-45, wherein the second composition comprises: a sugar substitute in an amount of at least about 80 weight percent; a salt in an amount of at least 0.1 weight percent; and a flavoring agent.
Embodiment 47: The multicomponent oral product of any one of embodiments 34-46, wherein the second composition is substantially free of nicotine.
Embodiment 48: The multicomponent oral product of any one of embodiments 34-47, wherein the multicomponent oral product has an exterior outer surface, and wherein at least at least a portion of the exterior outer surface comprises the first discrete portion.
Embodiment 49: The multicomponent oral product of any one of embodiments 34-48, wherein the weight ratio of the first discrete portion to the second discrete portion is in the range of about 1:1 to about 1:10, based on the total weight of the multicomponent oral product.
Embodiment 50: The multicomponent oral product of any one of embodiments 34-49, wherein the multicomponent oral product has an outer coating coated thereon.
Embodiment 51: The multicomponent oral product of any one of embodiments 34-50, wherein the first discrete portion and the second discrete portion are configured in a core/sheath arrangement, respectively, or arranged in a layered arrangement.
Embodiment 52: The multicomponent oral product of any one of embodiments 34-51, wherein at least one of the first composition and the second composition comprises one or more active ingredients selected from the group consisting of nutraceuticals, botanicals, stimulants, amino acids, vitamins, cannabinoids, cannabimimetics, terpenes, and combinations thereof.
Embodiment 53: The multicomponent oral product of any one of embodiments 34-52, wherein the multicomponent oral product is substantially free of tobacco material.
Embodiment 54: The multicomponent oral product of any one of embodiments 34-53, wherein the organic acid is a menthyl or tocopherol monoester of a dicarboxylic acid.
Embodiment 55: The multicomponent oral product of any one of embodiments 34-54, wherein the dicarboxylic acid is malonic acid, succinic acid, glutaric acid, adipic acid, fumaric acid, maleic acid, or a combination thereof.
Embodiment 56: The multicomponent oral product of any one of embodiments 34-55, wherein the organic acid is tocopherol succinate, monomenthyl succinate, monomenthyl fumarate, monomenthyl glutarate, or a combination thereof.
Embodiment 57: An oral product, the oral product comprising: a sugar substitute in an amount of at least about 80 weight percent; a basic amine (e.g., nicotine); and an organic acid, wherein the organic acid comprises benzoic acid, a menthyl or tocopherol monoester of a dicarboxylic acid, or a combination thereof, such as a dicarboxylic acid selected from malonic acid, succinic acid, glutaric acid, adipic acid, fumaric acid, maleic acid, or a combination thereof, and in particular, wherein the organic acid comprises tocopherol succinate, monomenthyl succinate, monomenthyl fumarate, monomenthyl glutarate, or a combination thereof.
These and other features, aspects, and advantages of the disclosure will be apparent from a reading of the following detailed description together with the accompanying drawings, which are briefly described below. The invention includes any combination of two, three, four, or more of the above-noted embodiments as well as combinations of any two, three, four, or more features or elements set forth in this disclosure, regardless of whether such features or elements are expressly combined in a specific embodiment description herein. This disclosure is intended to be read holistically such that any separable features or elements of the disclosed invention, in any of its various aspects and embodiments, should be viewed as intended to be combinable unless the context clearly dictates otherwise.
Having thus described the invention in the foregoing general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
The present disclosure will now be described more fully hereinafter with reference to example embodiments thereof. These example embodiments are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Indeed, the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. As used in this specification and the claims, the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Reference to “dry weight percent” or “dry weight basis” refers to weight on the basis of dry ingredients (i.e., all ingredients except water). Reference to “wet weight” refers to the weight of the mixture including water. Unless otherwise indicated, reference to “weight percent” of a mixture reflects the total wet weight of the mixture (i.e., including water).
The disclosure provides products configured for oral use and processes for preparing such oral products. Oral products as described herein may generally include a mixture of ingredients in the form of a composition. For example, in some embodiments, the compositions provided herein may include one or more active ingredients (e.g., a tobacco material and/or nicotine) and one or more additives (e.g., a filler, a binder component, a flavorant, etc..) that combine to form a product configured for oral use.
Oral products as described herein may be provided in various different forms and with various combinations of ingredients. Particularly, in preferred embodiments, products of the present disclosure may be provided in the form of a lozenge-type product. The lozenge-type products according to embodiments of the present disclosure may be configured for oral use and advantageously can provide different characteristics and properties upon insertion into the oral cavity of a user of that product. Certain products can exhibit, for example, one or more of the following characteristics: crispy, granular, chewy, syrupy, pasty, fluffy, smooth, and/or creamy. In certain embodiments, the desired textural property can be selected from the group consisting of adhesiveness, cohesiveness, density, dryness, fracturability, graininess, gumminess, hardness, heaviness, moisture absorption, moisture release, mouthcoating, roughness, slipperiness, smoothness, viscosity, wetness, and combinations thereof.
The term “configured for oral use” as used herein means that the product is provided in a form such that during use, saliva in the mouth of the user causes one or more of the components of the product (e.g., flavoring agents and/or nicotine) to pass into the mouth of the user. In one embodiment, the product is adapted to deliver components to a user through mucous membranes in the user's mouth and, in addition, said component is an active ingredient (including, but not limited to, nicotine) that can be absorbed through the mucous membranes in the mouth when the product is used. In some embodiments, the product may be adapted to deliver flavor components to a user in addition to the active ingredient.
The products comprising the compositions of the present disclosure may be dissolvable. As used herein, the terms “dissolve,” “dissolving,” and “dissolvable” refer to compositions having aqueous-soluble components that interact with moisture in the oral cavity and enter into solution, thereby causing gradual consumption of the product. According to one aspect, the dissolvable product is capable of lasting in the user's mouth for a given period of time until it completely dissolves. Dissolution rates can vary over a wide range, from about 1 minute or less to about 60 minutes. For example, fast release mixtures typically dissolve and/or release the active substance in about 2 minutes or less, often about 1 minute or less (e.g., about 50 seconds or less, about 40 seconds or less, about 30 seconds or less, or about 20 seconds or less). Dissolution can occur by any means, such as melting, mechanical disruption (e.g., chewing), enzymatic or other chemical degradation, or by disruption of the interaction between the components of the mixture.
In some embodiments, the products disclosed herein may be in the form of a dissolvable lozenge product configured for oral use. Example lozenge-type products of the invention have the form of a lozenge, tablet, microtab, or other tablet-type product. See, for example, the types of nicotine-containing lozenges, lozenge formulations, lozenge formats and configurations, lozenge characteristics and techniques for formulating or manufacturing lozenges set forth in U.S. Pat. Nos. 4,967,773 to Shaw; U.S. Pat. No. 5,110,605 to Acharya; U.S. Pat. No. 5,733,574 to Dam; U.S. Pat. No. 6,280,761 to Santus; U.S. Pat. No. 6,676,959 to Andersson et al.; U.S. Pat. No. 6,248,760 to Wilhelmsen; and U.S. Pat. No. 7,374,779; US Pat. Pub. Nos. 2001/0016593 to Wilhelmsen; 2004/0101543 to Liu et al.; 2006/0120974 to Mcneight; 2008/0020050 to Chau et al.; 2009/0081291 to Gin et al.; and 2010/0004294 to Axelsson et al.; which are incorporated herein by reference.
Lozenge products are generally described as “hard”, and are distinguished in this manner from soft lozenges (i.e., pastilles). Hard lozenges are mixtures of sugars and/or carbohydrates in an amorphous state. Although they are made from aqueous syrups, the water, which is initially present, evaporates as the syrup is boiled during processing so that the moisture content in the finished product is very low, such as 0.5% to 1.5% by weight. To obtain lozenges that are hard and not tacky, the temperature of the melt generally must reach the hard crack stage, with an example temperature range of 149° to 154° C.
Lozenge-type products, in some embodiments, may exhibit translucence or transparency. The desired transparency or translucency of the product can be quantified by any known method. For example, optical methods such as turbidimetry (or nephelometry) and colorimetry may be used to quantify the cloudiness (light scattering) and the color (light absorption), respectively, of the products. Translucency can also be confirmed by visual inspection by simply holding the product up to a light source and determining if light travels through the material or product in a diffuse manner.
Such lozenge-type products, in some embodiments, may exhibit translucence or transparency. The desired transparency or translucency of the product can be quantified by any known method. For example, optical methods such as turbidimetry (or nephelometry) and colorimetry may be used to quantify the cloudiness (light scattering) and the color (light absorption), respectively, of the products. Translucency can also be confirmed by visual inspection by simply holding the product up to a light source and determining if light travels through the material or product in a diffuse manner.
Oral products of the present disclosure may be provided in the form of lozenge-type products, for example, by altering the water content within the oral product. In certain embodiments, for example, the water content of the products may be provided within a specified range so as to dictate the final form of the product. The water content of the products described herein, prior to use by a consumer of the product, may vary within such ranges according to the desired properties and characteristics, in addition to dictating the final form of the product. For example, lozenge-type products typically possess a water content in the range of about 0.1 to about 10 weight percent, based on the total weight of the composition. Preferably, the moisture content of a lozenge product, as present within a single unit of product prior to insertion into the mouth of the user, is less than about 10 weight percent, less than about 7 weight percent, less than about 5 weight percent, less than about 3 weight percent, less than about 2 weight percent, or less than about 1 weight percent, based on the total weight of the product unit. In some embodiments, the moisture content of a lozenge product as described herein may be within the range of about 0.1 to about 10 weight percent, about 0.5 to about 7 weight percent, or about 1 to about 5 weight percent, based on the total weight of the product.
Oral products of the present disclosure typically include a composition comprising a sugar substitute in an amount of at least about 80 weight percent; a second sugar substitute (optionally in the form of a sugar alcohol syrup); a basic amine, such as nicotine or a nicotine component; water; and an organic acid, an alkali metal salt of an organic acid, or a combination thereof. Typically, at least a portion of the basic amine is associated with at least a portion of the organic acid or the alkali metal salt thereof. The association is in the form of a basic amine-organic acid salt, an ion pair between the basic amine and a conjugate base of the organic acid, or both. It is desirable to provide a basic amine-containing composition configured for oral use which retains the initial basic amine content during storage, and which delivers substantially the full amount of basic amine initially present in the composition. The relative amounts of the various components within the composition may vary, and typically are selected so as to provide the desired sensory and performance characteristics to the composition. The example individual components of the composition are described further herein below.
In certain embodiments, the present disclosure provides compositions which combine a basic amine and a non-polar or lipophilic organic acid salt in an acidic matrix which exhibit enhanced retention of the initial basic amine content during storage, and are predicted to deliver more of the basic amine to the user upon use of the composition, relative to a composition which contains a polar organic acid salt in an acidic matrix (e.g., citric acid or sodium citrate). Surprisingly, according to the present disclosure, it has been found that in certain embodiments, the presence of a non-polar or lipophilic organic acid salt enhanced composition stability and enhanced membrane permeability of the nicotine in a model system of oral absorption at an acidic pH, relative to a composition configured for oral use which included a polar organic acid salt. The enhanced nicotine permeation is particularly surprising in view of the predicted decrease in permeability associated with nicotine protonation under acidic conditions.
As disclosed herein, at least a portion of the basic amine is associated with at least a portion of the organic acid or the alkali metal salt thereof. Depending on multiple variables (concentration, pH, nature of the organic acid, and the like), the basic amine present in the composition can exist in multiple forms, including ion paired, in solution (i.e., fully solvated), as the free base, as a cation, as a salt, or any combination thereof. In some embodiments, the association between the basic amine and at least a portion of the organic acid or the alkali metal salt thereof is in the form of an ion pair between the basic amine and a conjugate base of the organic acid.
Ion pairing describes the partial association of oppositely charged ions in relatively concentrated solutions to form distinct chemical species called ion pairs. The strength of the association (i.e., the ion pairing) depends on the electrostatic force of attraction between the positive and negative ions (i.e., a protonated basic amine such as nicotine, and the conjugate base of the organic acid). By “conjugate base” is meant the base resulting from deprotonation of the corresponding acid (e.g., benzoate is the conjugate base of benzoic acid). On average, a certain population of these ion pairs exists at any given time, although the formation and dissociation of ion pairs is continuous. In the oral products and compositions disclosed herein, and/or upon oral use of said products and compositions (e.g., upon contact with saliva), the basic amine, for example nicotine, and the conjugate base of the organic acid exist at least partially in the form of an ion pair. Without wishing to be bound by theory, it is believed that such ion pairing may minimize chemical degradation of the basic amine and/or enhance the oral availability of the basic amine (e.g., nicotine). At alkaline pH values (e.g., such as from about 7.5 to about 9), certain basic amines, for example nicotine, are largely present in the free base form, which has relatively low water solubility, and low stability with respect to evaporation and oxidative decomposition, but high mucosal availability. Conversely, at acidic pH values (such as from about 6.5 to about 4), certain basic amines, for example nicotine, are largely present in a protonated form, which has relatively high water solubility, and higher stability with respect to evaporation and oxidative decomposition, but low mucosal availability. Surprisingly, according to the present disclosure, it has been found that the properties of stability, solubility, and availability of the nicotine in a composition configured for oral use can be mutually enhanced through ion pairing or salt formation of nicotine with appropriate organic acids and/or their conjugate bases. Specifically, nicotine-organic acid ion pairs of moderate lipophilicity result in favorable stability and absorption properties. Lipophilicity is conveniently measured in terms of logP, the partition coefficient of a molecule between a lipophilic phase and an aqueous phase, usually octanol and water, respectively. An octanol-water partitioning favoring distribution of a basic amine-organic acid ion pair into octanol is predictive of good absorption of the basic amine present in the composition through the oral mucosa.
As noted above, at alkaline pH values (e.g., such as from about 7.5 to about 9), nicotine is largely present in the free base form (and accordingly, a high partitioning into octanol), while at acidic pH values (such as from about 6.5 to about 4), nicotine is largely present in a protonated form (and accordingly, a low partitioning into octanol). Surprisingly, according to the present disclosure, it has been found that an ion pair between certain organic acids (e.g., having a logP value of from about 1.4 to about 8.0. such as from about 1.4 to about 4.5, allows nicotine partitioning into octanol consistent with that predicted for nicotine partitioning into octanol at a pH of 8.4.
One of skill in the art will recognize that the extent of ion pairing in the disclosed oral products, both before and during use by the consumer, may vary based on, for example, pH, the nature of the organic acid, the concentration of basic amine, the concentration of the organic acid or conjugate base of the organic acid present in the composition, the moisture content of the composition, the ionic strength of the composition, and the like. One of skill in the art will also recognize that ion pairing is an equilibrium process influenced by the foregoing variables. Accordingly, quantification of the extent of ion pairing is difficult or impossible by calculation or direct observation. However, as disclosed herein, the presence of ion pairing may be demonstrated through surrogate measures such as partitioning of the basic amine between octanol and water or membrane permeation of aqueous solutions of the basic amine plus organic acids and/or their conjugate bases.
Oral products and compositions as described herein comprise at least one organic acid, an alkali metal salt of an organic acid, or a combination thereof. As used herein, the term “organic acid” refers to an organic (i.e., carbon-based) compound that is characterized by acidic properties. Typically, organic acids are relatively weak acids (i.e., they do not dissociate completely in the presence of water), such as carboxylic acids (—CO2H) or sulfonic acids (—SO2OH). As used herein, reference to organic acid means an organic acid that is intentionally added. In this regard, an organic acid may be intentionally added as a specific composition ingredient as opposed to merely being inherently present as a component of another composition ingredient (e.g., the small amount of organic acid which may inherently be present in a composition ingredient, such as a tobacco material).
Suitable organic acids will typically have a range of lipophilicities (i.e., a polarity giving an appropriate balance of water and organic solubility). Typically, lipophilicities of suitable organic acids, as indicated by logP, will vary between about 1 and about 12 (more soluble in octanol than in water). In some embodiments, the organic acid has a logP value of from about 1 to about 12, e.g., from about 3.0, about 3.5, about 4.0, about 4.5, about 5.0, about 5.5, about 6.0, about 6.5, about 7.0, about 7.5, or about 8.0, to about 8.5, about 9.0, about 9.5, about 10.0, about 10.5, about 11.0, about 11.5, or about 12.0. In certain embodiments, lipophilicities of suitable organic acids, as indicated by logP, will vary between about 1.4 and about 4.5 (more soluble in octanol than in water). In some embodiments, the organic acid has a logP value of from about 1.5 to about 4.0, e.g., from about 1.5, about 2.0, about 2.5, or about 3.0, to about 3.5, about 4.0, about 4.5, or about 5.0. Particularly suitable organic acids have a logP value of from about 1.7 to about 4, such as from about 2.0, about 2.5, or about 3.0, to about 3.5, or about 4.0. In specific embodiments, the organic acid has a logP value of about 2.5 to about 3.5. In some embodiments, organic acids outside this range may also be utilized for various purposes and in various amounts, as described further herein below. For example, in some embodiments, the organic acid may have a logP value of greater than about 4.5, such as from about 4.5 to about 12.0. Particularly, the presence of certain solvents or solubilizing agents (e.g., inclusion in the composition of glycerin or propylene glycol) may extend the range of lipophilicity (i.e., values of logP higher than 4.5, such as from about 4.5 to about 12.0).
Without wishing to be bound by theory, it is believed that moderately lipophilic organic acids (e.g., logP of from about 1.4 to about 4.5) produce ion pairs with nicotine which are of a polarity providing good octanol-water partitioning of the ion pair, and hence partitioning of nicotine, into octanol versus water. As discussed above, such partitioning into octanol is predictive of favorable oral availability.
In some embodiments, the organic acid is a carboxylic acid or a sulfonic acid. The carboxylic acid or sulfonic acid functional group may be attached to any alkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl group having, for example, from one to twenty carbon atoms (C1-C20). In some embodiments, the organic acid is an alkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl carboxylic or sulfonic acid.
As used herein, “alkyl” refers to any straight chain or branched chain hydrocarbon. The alkyl group may be saturated (i.e., having all sp3 carbon atoms), or may be unsaturated (i.e., having at least one site of unsaturation). As used herein, the term “unsaturated” refers to the presence of a carbon-carbon, sp2 double bond in one or more positions within the alkyl group. Unsaturated alkyl groups may be mono- or polyunsaturated. Representative straight chain alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, n-butyl, n-pentyl, and n-hexyl. Branched chain alkyl groups include, but are not limited to, isopropyl, sec-butyl, isobutyl, tert-butyl, isopentyl, and 2-methylbutyl. Representative unsaturated alkyl groups include, but are not limited to, ethylene or vinyl, allyl, 1-butenyl, 2-butenyl, isobutylenyl, 1-pentenyl, 2-pentenyl, 3-methyl-1-butenyl, 2-methyl-2-butenyl, 2,3-dimethyl-2-butenyl, and the like. An alkyl group can be unsubstituted or substituted.
“Cycloalkyl” as used herein refers to a carbocyclic group, which may be mono- or bicyclic. Cycloalkyl groups include rings having 3 to 7 carbon atoms as a monocycle or 7 to 12 carbon atoms as a bicycle. Examples of monocyclic cycloalkyl groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl. A cycloalkyl group can be unsubstituted or substituted, and may include one or more sites of unsaturation (e.g., cyclopentenyl or cyclohexenyl).
The term “aryl” as used herein refers to a carbocyclic aromatic group. Examples of aryl groups include, but are not limited to, phenyl and naphthyl. An aryl group can be unsubstituted or substituted.
“Heteroaryl” and “heterocycloalkyl” as used herein refer to an aromatic or non-aromatic ring system, respectively, in which one or more ring atoms is a heteroatom, e.g. nitrogen, oxygen, and sulfur. The heteroaryl or heterocycloalkyl group comprises up to 20 carbon atoms and from 1 to 3 heteroatoms selected from N, O, and S. A heteroaryl or heterocycloalkyl may be a monocycle having 3 to 7 ring members (for example, 2 to 6 carbon atoms and 1 to 3 heteroatoms selected from N, O, and S) or a bicycle having 7 to 10 ring members (for example, 4 to 9 carbon atoms and 1 to 3 heteroatoms selected from N, O, and S), for example: a bicyclo[4,5], [5,5], [5,6], or [6,6] system. Examples of heteroaryl groups include by way of example and not limitation, pyridyl, thiazolyl, tetrahydrothiophenyl, pyrimidinyl, furanyl, thienyl, pyrrolyl, pyrazolyl, imidazolyl, tetrazolyl, benzofuranyl, thianaphthalenyl, indolyl, indolenyl, quinolinyl, isoquinolinyl, benzimidazolyl, isoxazolyl, pyrazinyl, pyridazinyl, indolizinyl, isoindolyl, 3H-indolyl, 1H-indazolyl, purinyl, 4H-quinolizinyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, pteridinyl, 4aH-carbazolyl, carbazolyl, phenanthridinyl, acridinyl, pyrimidinyl, phenanthrolinyl, phenazinyl, phenothiazinyl, furazanyl, phenoxazinyl, isochromanyl, chromanyl, imidazolidinyl, imidazolinyl, pyrazolidinyl, pyrazolinyl, benzotriazolyl, benzisoxazolyl, and isatinoyl. Examples of heterocycloalkyls include by way of example and not limitation, dihydroypyridyl, tetrahydropyridyl (piperidyl), tetrahydrothiophenyl, piperidinyl, 4-piperidonyl, pyrrolidinyl, 2-pyrrolidonyl, tetrahydrofuranyl, tetrahydropyranyl, bis-tetrahydropyranyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, decahydroquinolinyl, octahydroisoquinolinyl, piperazinyl, quinuclidinyl, and morpholinyl. Heteroaryl and heterocycloalkyl groups can be unsubstituted or substituted.
“Substituted” as used herein and as applied to any of the above alkyl, aryl, cycloalkyl, heteroaryl, heterocyclyl, means that one or more hydrogen atoms are each independently replaced with a substituent. Typical substituents include, but are not limited to, —Cl, Br, F, alkyl, —OH, —OCH3, NH2, —NHCH3, —N(CH3)2, —CN, —NC(═O)CH3, —C(═O)—, —C(═O)NH2, and —C(═O)N(CH3)2. Wherever a group is described as “optionally substituted,” that group can be substituted with one or more of the above substituents, independently selected for each occasion. In some embodiments, the substituent may be one or more methyl groups or one or more hydroxyl groups.
In some embodiments, the organic acid is an alkyl carboxylic acid. Non-limiting examples of alkyl carboxylic acids include formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, and the like.
In some embodiments, the organic acid is an alkyl sulfonic acid. Non-limiting examples of alkyl sulfonic acids include propanesulfonic acid, heptanesulfonic acid, and octanesulfonic acid.
In some embodiments, the alkyl carboxylic or sulfonic acid is substituted with one or more hydroxyl groups. Non-limiting examples include glycolic acid, 4-hydroxybutyric acid, and lactic acid.
In some embodiments, an organic acid may include more than one carboxylic acid group or more than one sulfonic acid group (e.g., two, three, or more carboxylic acid groups). Non-limiting examples include oxalic acid, fumaric acid, maleic acid, and glutaric acid. In organic acids containing multiple carboxylic acids (e.g., from two to four carboxylic acid groups), one or more of the carboxylic acid groups may be esterified. Non-limiting examples include succinic acid monoethyl ester, monomethyl fumarate, monomethyl or dimethyl citrate, and the like.
In some embodiments, the organic acid may include more than one carboxylic acid group and one or more hydroxyl groups. Non-limiting examples of such acids include tartaric acid, citric acid, and the like.
In some embodiments, the organic acid is an aryl carboxylic acid or an aryl sulfonic acid. Non-limiting examples of aryl carboxylic and sulfonic acids include benzoic acid, toluic acids, salicylic acid, benzenesulfonic acid, and p-toluenesulfonic acid.
Further non-limiting examples of organic acids which may be useful in certain embodiments include 2-(4-isobutylphenyl)propanoic acid, 2,2-dichloroacetic acid, 2-hydroxyethanesulfonic acid, 2-oxoglutaric acid, 4-acetamidobenzoic acid, 4-aminosalicylic acid, adipic acid, ascorbic acid (L), aspartic acid (L), alpha-methylbutyric acid, camphoric acid (+), camphor-10-sulfonic acid (+), cinnamic acid, cyclamic acid, dodecylsulfuric acid, ethane-1,2-disulfonic acid, ethanesulfonic acid, furoic acid, galactaric acid, gentisic acid, glucoheptonic acid, gluconic acid, glucuronic acid, glutamic acid, glycerophosphoric acid, glycolic acid, hippuric acid, isobutyric acid, isovaleric acid, lactobionic acid, lauric acid, levulinic acid, malic acid, malonic acid, mandelic acid, methanesulfonic acid, naphthalene-1,5-disulfonic acid, naphthalene-2-sulfonic acid, oleic acid, palmitic acid, pamoic acid, phenylacetic acid, pyroglutamic acid, pyruvic acid, sebacic acid, stearic acid, and undecylenic acid.
Examples of suitable acids include, but are not limited to, the list of organic acids in Table 1.
In some embodiments, the organic acid is benzoic acid, a toluic acid, benzenesulfonic acid, toluenesulfonic acid, hexanoic acid, heptanoic acid, decanoic acid, or octanoic acid. In some embodiments, the organic acid is benzoic acid, octanoic acid, or decanoic acid. In some embodiments, the organic acid is octanoic acid.
In some embodiments, the organic acid is a mono ester of a di- or poly-acid, such as mono-octyl succinate, mono-octyl fumarate, or the like. In some embodiments, the organic acid is a mono ester of a dicarboxylic acid or a poly-carboxylic acid. In some embodiments, the dicarboxylic acid is malonic acid, succinic acid, glutaric acid, adipic acid, fumaric acid, maleic acid, or a combination thereof. In some embodiments, the dicarboxylic acid is succinic acid, glutaric acid, fumaric acid, maleic acid, or a combination thereof. In some embodiments, the dicarboxylic acid is succinic acid, glutaric acid, or a combination thereof.
In some embodiments, the alcohol forming the mono ester of the dicarboxylic acid is a lipophilic alcohol. Examples of suitable lipophilic alcohols include, but are not limited to, octanol, menthol, and tocopherol. In some embodiments, the organic acid is an octyl mono ester of a dicarboxylic acid, such as monooctyl succinate, monooctyl fumarate, or the like. In some embodiments, the organic acid is a monomenthyl ester of a dicarboxylic acid. Certain menthyl esters may be desirable in oral compositions as described herein by virtue of the cooling sensation they may provide upon use of the product comprising the composition. In some embodiments, the organic acid is monomenthyl succinate, monomenthyl fumarate, monomenthyl glutarate, or a combination thereof. In some embodiments, the organic acid is a monotocopheryl ester of a dicarboxylic acid. Certain tocopheryl esters may be desirable in oral compositions as described herein by virtue of the antioxidant effects they may provide. In some embodiments, the organic acid is tocopheryl succinate, tocopheryl fumarate, tocopheryl glutarate, or a combination thereof.
In some embodiments, the organic acid is a carotenoid derivative having one or more carboxylic acids. Carotenoids are tetraterpenes, meaning that they are produced from 8 isoprene molecules and contain 40 carbon atoms. Accordingly, they are usually lipophilic due to the presence of long unsaturated aliphatic chains, and are generally yellow, orange, or red in color. Certain carotenoid derivatives can be advantageous in oral compositions by virtue of providing both ion pairing and serving as a colorant in the composition. In some embodiments, the organic acid is 2E,4E,6E,8E,10E,12E,14E,16Z,18E)-20-methoxy-4,8,13,17-tetramethyl-20-oxoicosa-2,4,6,8,10,12,14,16,18-nonaenoic acid (bixin) or an isomer thereof. Bixin is an apocarotenoid found in annatto seeds from the achiote tree (Bixa orellana), and is the naturally occurring pigment providing the reddish orange color to annatto. Bixin is soluble in fats and alcohols but insoluble in water, and is chemically unstable when isolated, converting via isomerization into the double bond isomer, trans-bixin (β-bixin), having the structure:
In some embodiments, the organic acid is (2E,4E,6E,8E,10E,12E,14E,16E,18E)-4,8,13,17-tetramethylicosa-2,4,6,8,10,12,14,16,18-nonaenedioic acid (norbixin), a water soluble hydrolysis product of bixin having the structure:
The selection of organic acid may further depend on additional properties in addition to or without consideration to the logP value. For example, an organic acid should be one recognized as safe for human consumption, and which has acceptable flavor, odor, volatility, stability, and the like. Determination of appropriate organic acids is within the purview of one of skill in the art.
In some embodiments, more than one organic acid may be present. For example, the composition may comprise two, or three, or four, or more organic acids. Accordingly, reference herein to “an organic acid” contemplates mixtures of two or more organic acids. The relative amounts of the multiple organic acids may vary. For example, a composition may comprise equal amounts of two, or three, or more organic acids, or may comprise different relative amounts. In this manner, it is possible to include certain organic acids (e.g., citric acid or myristic acid) which have a logP value outside the desired range, when combined with other organic acids to provide the desired average logP range for the combination. In some embodiments, it may be desirable to include organic acids in the composition which have logP values outside the desired range for purposes such as, but not limited to, providing desirable organoleptic properties, stability, as flavor components, and the like. Further, certain lipophilic organic acids have undesirable flavor and or aroma characteristics which would preclude their presence as the sole organic acid (e.g., in equimolar or greater quantities relative to nicotine). Without wishing to be bound by theory, it is believed that a combination of different organic acids may provide the desired ion pairing while the concentration of any single organic acid in the composition remains below the threshold which would be found objectionable from a sensory perspective.
For example, in some embodiments, the organic acid may comprise from about 1 to about 5 or more molar equivalents of benzoic acid relative to nicotine, combined with e.g., about 0.2 molar equivalents of octanoic acid or a salt thereof, and 0.2 molar equivalents of decanoic acid or a salt thereof.
In some embodiments, the organic acid is a combination of any two organic acids selected from the group consisting of benzoic acid, a toluic acid, benzenesulfonic acid, toluenesulfonic acid, hexanoic acid, heptanoic acid, decanoic acid, and octanoic acid. In some embodiments, the organic acid is a combination of benzoic acid, octanoic acid, and decanoic acid, or benzoic and octanoic acid. In some embodiments, the composition comprises citric acid in addition to one or more of benzoic acid, a toluic acid, benzenesulfonic acid, toluenesulfonic acid, hexanoic acid, heptanoic acid, decanoic acid, and octanoic acid.
In some embodiments, the composition comprises an alkali metal salt of an organic acid. For example, at least a portion of the organic acid may be present in the composition in the form of an alkali metal salt. Suitable alkali metal salts include lithium, sodium, and potassium. In some embodiments, the alkali metal is sodium or potassium. In some embodiments, the alkali metal is sodium. In some embodiments, the composition comprises an organic acid and a sodium salt of the organic acid.
In some embodiments, the composition comprises benzoic acid and sodium benzoate, octanoic acid and sodium octanoate, decanoic acid and sodium decanoate, or a combination thereof.
In some embodiments, the ratio of the organic acid to the sodium salt (or other alkali metal) of the organic acid is from about 0.1 to about 10, such as from about 0.1, about 0.25, about 0.3, about 0.5, about 0.75, or about 1, to about 2, about 5, or about 10. For example, in some embodiments, both an organic acid and the sodium salt thereof are added to the other components of the composition, wherein the organic acid is added in excess of the sodium salt, in equimolar quantities with the sodium salt, or as a fraction of the sodium salt. One of skill in the art will recognize that the relative amounts will be determined by the desired pH of the composition, as well as the desired ionic strength. For example, the organic acid may be added in a quantity to provide a desired pH level of the composition, while the alkali metal (e.g., sodium) salt is added in a quantity to provide the desired extent of ion pairing. As one of skill in the art will understand, the quantity of organic acid (i.e., the protonated form) present in the composition, relative to the alkali metal salt or conjugate base form present in the composition, will vary according to the pH of the composition and the pKa of the organic acid, as well as according to the actual relative quantities initially added to the composition.
The amount of organic acid and/or an alkali metal salt thereof present in the composition, relative to nicotine, may vary. Generally, as the concentration of the organic acid (or the conjugate base thereof) increases, the percent of nicotine that is ion paired with the organic acid increases. This typically increases the partitioning of the nicotine, in the form of an ion pair, into octanol versus water as measured by the logP (the logio of the partitioning coefficient). In some embodiments, the composition comprises from about 0.05, about 0.1, about 1, about 1.5, about 2, or about 5, to about 10, about 15, or about 20 molar equivalents of the organic acid, the alkali metal salt thereof, or the combination thereof, relative to the nicotine component, calculated as free base nicotine.
In some embodiments, the composition comprises from about 2 to about 10, or from about 2 to about 5 molar equivalents of the organic acid, the alkali metal salt thereof, or the combination thereof, to nicotine, on a free-base nicotine basis. In some embodiments, the organic acid, the alkali metal salt thereof, or the combination thereof, is present in a molar ratio with the nicotine from about 2, about 3, about 4, or about 5, to about 6, about 7, about 8, about 9, or about 10. In embodiments wherein more than one organic acid, alkali metal salt thereof, or both, are present, it is to be understood that such molar ratios reflect the totality of the organic acids present.
In certain embodiments the organic acid inclusion is sufficient to provide a composition pH of from about 4.0 to about 9.0, such as from about 4.5 to about 7.0, or from about 5.5 to about 7.0, from about 4.0 to about 5.5, or from about 7.0 to about 9.0. In some embodiments, the organic acid inclusion is sufficient to provide a composition pH of from about 4.5 to about 6.5, for example, from about 4.5, about 5.0, or about 5.5, to about 6.0, or about 6.5. In some embodiments, the organic acid is provided in a quantity sufficient to provide a pH of the composition of from about 5.5 to about 6.5, for example, from about 5.5, about 5.6, about 5.7, about 5.8, about 5.9, or about 6.0, to about 6.1, about 6.2, about 6.3, about 6.4, or about 6.5. In other embodiments, a mineral acid (e.g., hydrochloric acid, sulfuric acid, phosphoric acid, or the like) is added to adjust the pH of the composition to the desired value.
In some embodiments, the organic acid is added as the free acid, either neat (i.e., native solid or liquid form) or as a solution in, e.g., water, to the other composition components. In some embodiments, the alkali metal salt of the organic acid is added, either neat or as a solution in, e.g., water, to the other composition components. In some embodiments, the organic acid and the basic amine (e.g., nicotine) are combined to form a salt, either before addition to the composition, or the salt is formed within and is present in the composition as such. In other embodiments, the organic acid and basic amine (e.g., nicotine) are present as individual components in the composition, and form an ion pair upon contact with moisture (e.g., saliva in the mouth of the consumer).
In some embodiments, the composition comprises nicotine benzoate and sodium benzoate (or other alkali metal benzoate). In other embodiments, the composition comprises nicotine and an organic acid, wherein the organic acid is a monoester of a dicarboxylic acid or is a carotenoid derivative having one or more carboxylic acids.
In one or more embodiments, oral products as disclosed herein comprise a basic amine. By “basic amine” is meant a molecule including at least one basic amine functional group. Examples of basic amines include, but are not limited to, alkaloids. By “basic amine functional group” is meant a group containing a nitrogen atom having a lone pair of electrons. The basic amine functional group is attached to or incorporated within the molecule through one or more covalent bonds to the said nitrogen atom. The basic amine may be a primary, secondary, or tertiary amine, meaning the nitrogen bears one, two, or three covalent bonds to carbon atoms. By virtue of the lone pair of electrons on the nitrogen atom, such amines are termed “basic”, meaning the lone electron pair is available for hydrogen bonding. The basicity (i.e., the electron density on the nitrogen atom and consequently the availability and strength of hydrogen bonding to the nitrogen atom) of the basic amine may be influenced by the nature of neighboring atoms, the steric bulk of the molecule, and the like.
Generally, the basic amine is released from the composition and absorbed through the oral mucosa, thereby entering the blood stream, where it is circulated systemically. Generally, the basic amine is present in or as an active ingredient in the composition, as described herein below. In some embodiments, the basic amine is nicotine or a nicotine component. By “nicotine component” is meant any suitable form of nicotine as discussed herein (e.g., free base, salt, or ion pair) for providing oral absorption of at least a portion of the nicotine present. In some embodiments, suitable forms of nicotine may include naturally-occurring and/or synthetic nicotine. Nicotine is released from the composition and absorbed through the oral mucosa, thereby entering the blood stream, where it is circulated systemically.
Typically, the nicotine component is selected from the group consisting of nicotine free base, nicotine as an ion pair, and a nicotine salt. In some embodiments, at least a portion of the nicotine is in its free base form. In some embodiments, at least a portion of the nicotine is present as a nicotine salt, or at least a portion of the nicotine is present as an ion pair with at least a portion of the organic acid or the conjugate base thereof, as disclosed herein above.
Typically, the nicotine component (calculated as the free base) is present in a concentration of at least about 0.001% by weight of the composition, such as in a range from about 0.001% to about 10%. In some embodiments, the nicotine component is present in a concentration from about 0.1% w/w to about 10% by weight, such as, e.g., from about 0.1% w/w, about 0.2%, about 0.3%, about 0.4%, about 0.5% about 0.6%, about 0.7%, about 0.8%, or about 0.9%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, or about 10% by weight, calculated as the free base and based on the total weight of the composition. In some embodiments, the nicotine component is present in a concentration from about 0.1% w/w to about 3% by weight, such as, e.g., from about 0.1% w/w to about 2.5%, from about 0.1% to about 2.0%, from about 0.1% to about 1.5%, or from about 0.1% to about 1% by weight, calculated as the free base and based on the total weight of the composition.
As noted above, oral lozenge products and compositions provided according to the present disclosure comprise at least one sugar substitute. For example, in some embodiments, lozenge products and compositions as described herein may include a single sugar substitute. In certain other embodiments, lozenge products and compositions as described herein may include multiple sugar substitutes and combinations thereof, for example, some embodiments of lozenges may include a first sugar substitute and a second sugar substitute. The sugar substitute is typically provided in pure, solid form (e.g., granular or powdered form). However, in some embodiments, one or more sugar substitutes may be provided in the form of a syrup, e.g., such as a sugar alcohol syrup. In other embodiments, the sugar substitute is dry, comprising a very low water content. For example, the sugar substitute can comprise less than about 5% water by weight, less than about 3% water by weight, less than about 2% water by weight, or less than about 1% water by weight.
The sugar substitute can be any sugarless material (i.e., sucrose-free material) and can be natural or synthetically produced. The sugar substitute used in the products described herein can be nutritive or non-nutritive. For example, the sugar substitute is commonly a sugar alcohol. Sugar alcohols that may be useful according to the present invention include, but are not limited to, erythritol, threitol, arabitol, xylitol, ribotol, mannitol, sorbitol, dulcitol, iditol, isomalt, maltitol, lactitol, polyglycitol, and mixtures thereof. For example, in certain embodiments, the sugar alcohol is selected from the group consisting of erythritol, sorbitol, and isomalt. The amount of sugar substitute in the lozenge compositions can vary, but is typically at least about 75%, at least about 80%, at least about 85%, or at least about 90%, or at least about 95% by weight of the composition.
In certain embodiments, the sugar substitute is capable of forming a glassy matrix. The formation of a glassy matrix is commonly characterized by a translucent/transparent appearance. Typically, the sugar substitute is substantially non-hygroscopic. Non-hygroscopic materials typically do not absorb, adsorb, and/or retain a significant quantity of moisture from the air. For example, in some embodiments, the sugar substitute exhibits a weight gain of water of less than about 50% upon exposure to conditions of 25° C., 80% relative humidity for two weeks. Typically, the sugar substitute exhibits a weight gain of less than about 30%, less than about 20%, less than about 10%, less than about 5%, less than about 2%, or less than about 1% upon exposure to conditions of 25° C., 80% relative humidity for two weeks. Non-hygroscopic materials can provide the benefit of reducing the tendency of the lozenge product to tackify upon exposure to humidity.
In certain embodiments, the sugar substitute comprises one or more sugar alcohols. For example, in one embodiment, the sugar substitute is isomalt. Isomalt is a disaccharide that is typically made by enzymatic rearrangement of sucrose into isomaltulose, followed by hydrogenation to give an equimolar composition of 6-O-α-D-glucopyranosido-D-sorbitol (1,6-GPS) and 1-O-α-D-glucopyranosido-D-mannitol-dihydrate (1,1-GPM-dihydrate).
As noted above, some embodiments of oral lozenge products comprise a first sugar substitute (e.g., such as isomalt) and a second sugar substitute (e.g., such as maltitol). In such embodiments, the second sugar substitute may optionally be provided in the form of a syrup, e.g., a sugar syrup or a sugar alcohol syrup, in addition to the sugar substitute. “Sugar alcohol syrup” as used herein is intended to refer to a thick solution of sugar alcohol in water, e.g., having greater than about 40% solids, preferably having greater than about 50% solids, greater than about 60% solids, greater than about 70% solids, or greater than about 80% solids. Typically, the solid content of the sugar alcohol syrup primarily comprises the named sugar alcohol (i.e., maltitol syrup typically comprises greater than about 80%, greater than about 85%, or greater than about 90% by weight maltitol on a dry basis). Sugar alcohol syrups are generally prepared by heating a solution of the sugar alcohol in water and cooling the mixture to give a viscous composition. The resulting syrup is typically characterized by a relatively high concentration of sugar alcohol and relatively high stability (i.e., the sugar alcohol typically does not crystallize from solution, e.g., at room temperature).
The second sugar substitute, when provided in the form of a syrup, e.g., sugar alcohol syrup, desirably is capable of affecting the re-crystallization of a melted sugar substitute. One example sugar alcohol syrup that is particularly useful according to the present disclosure is maltitol syrup. Other sugar alcohol syrups can be used, including, but not limited to, corn syrup, golden syrup, molasses, xylitol, mannitol, glycerol, erythritol, threitol, arabitol, ribitol, mannitol, sorbitol, dulcitol, iditol, isomalt, lactitol, and polyglycitol syrups. Such sugar alcohol syrups can be prepared or can be obtained from commercial sources. For example, maltitol syrups are commercially available from such suppliers as Corn Products Specialty Ingredients. Although sugar alcohol syrups may be preferred, sugar syrups can, in certain embodiments, be used in place of or in combination with the sugar alcohol syrup. For example, in some embodiments, corn syrup, golden syrup, and/or molasses can be used.
The amount of sugar alcohol syrup added to the lozenge composition mixture is typically that amount required to slow recrystallization of the sugar substitute in melted form. It should be noted that it may be possible to vary the amount of sugar alcohol syrup depending on the composition of the remaining ingredients to ensure that the recrystallization is sufficiently slow to provide a material with the desired characteristics (e.g., a desired level of translucency/transparency). Accordingly, the amount of the second sugar substitute (e.g., optionally provided as a sugar alcohol syrup) can vary, but typically ranges from about 0.1% to about 2%, often from about 0.5% to about 1.5%, and more often about 1% by weight of the smokeless tobacco product mixture. In certain embodiments, the amount of sugar alcohol syrup is higher, for example, up to about 2% by weight of the mixture, up to about 5% by weight of the mixture, up to about 10% by weight of the mixture, or up to about 20% by weight of the mixture
The compositions and products as disclosed herein, in certain embodiments, may include one or more active ingredients alternatively, or in addition to, the basic amine component. For example, as noted above, the basic amine component may be present in or as the active ingredient in the composition, such that the basic amine (e.g., nicotine) functions as the only active ingredient within the composition. However, in other embodiments, the compositions described herein may include one or more active ingredients (e.g., nicotine, botanicals, stimulants, cannabinoids, vitamins, etc.) in addition to the basic amine, which functions as an active ingredient as well. As used herein, an “active ingredient” refers to one or more substances belonging to any of the following categories: API (active pharmaceutical ingredient), food additives, natural medicaments, and naturally occurring substances that can have an effect on humans. Example active ingredients include any ingredient known to impact one or more biological functions within the body, such as ingredients that furnish pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease, or which affect the structure or any function of the body of humans (e.g., provide a stimulating action on the central nervous system, have an energizing effect, an antipyretic or analgesic action, or an otherwise useful effect on the body). In some embodiments, the active ingredient may be of the type generally referred to as dietary supplements, nutraceuticals, “phytochemicals” or “functional foods.” These types of additives are sometimes defined in the art as encompassing substances typically available from naturally-occurring sources (e.g., botanical materials) that provide one or more advantageous biological effects (e.g., health promotion, disease prevention, or other medicinal properties), but are not classified or regulated as drugs.
Non-limiting examples of active ingredients include those falling in the categories of botanical ingredients, stimulants, amino acids, nicotine components, and/or pharmaceutical, nutraceutical, and medicinal ingredients (e.g., vitamins, such as A, B3, B6, B12, and C, and/or cannabinoids, such as tetrahydrocannabinol (THC) and cannabidiol (CBD)). Each of these categories is further described herein below. The particular choice of active ingredients will vary depending upon the desired flavor, texture, and desired characteristics of the particular product.
In certain embodiments, the active ingredient is selected from the group consisting of caffeine, taurine, GABA, theanine, tryptophan, vitamin B6, vitamin B12, vitamin C, lemon balm extract, ginseng, citicoline, sunflower lecithin, and combinations thereof. For example, the active ingredient can include a combination of caffeine, theanine, and optionally ginseng. In another embodiment, the active ingredient includes a combination of theanine, gamma-amino butyric acid (GABA), and optionally lemon balm extract. In a further embodiment, the active ingredient includes theanine, theanine and tryptophan, theanine and one or more of B vitamin B6 and vitamin B12, or tryptophan, theanine and one or more of B vitamin B6 and vitamin B12. In a still further embodiment, the active ingredient includes a combination of caffeine, taurine, and vitamin C, optionally further including one or more B vitamins (e.g., vitamin B6 or B12). A magnesium salt (e.g., magnesium gluconate) could be added to any of the above combinations, particularly combinations also including theanine.
In some embodiments, the active ingredient as described herein may be sensitive to degradation (e.g., oxidative, photolytic, thermal, evaporative) during processing or upon storage of the oral product. In such embodiments, the active ingredient (such as caffeine, vitamin A, and iron (Fe)) may be encapsulated, or the matrix otherwise modified with fillers, binders, and the like, to provide enhanced stability to the active ingredient. For example, binders such as functional celluloses (e.g., cellulose ethers including, but not limited to, hydroxypropyl cellulose) may be employed to enhance stability of such actives toward degradation. Additionally, encapsulated actives may need to be paired with an excipient in the composition to increase their solubility and/or bioavailability. Non-limiting examples of suitable excipients include beta-carotene, lycopene, Vitamin D, Vitamin E, Co-enzyme Q10, Vitamin K, and curcumin.
The particular percentages of active ingredients present will vary depending upon the desired characteristics of the particular product. Typically, an active ingredient or combination thereof is present in a total concentration of at least about 0.001% by weight of the composition, such as in a range from about 0.001% to about 20%. In some embodiments, the active ingredient or combination of active ingredients is present in a concentration from about 0.1% w/w to about 10% by weight, such as, e.g., from about 0.5% w/w to about 10%, from about 1% to about 10%, from about 1% to about 5% by weight, based on the total weight of the composition. In some embodiments, the active ingredient or combination of active ingredients is present in a concentration of from about 0.001%, about 0.01%, about 0.1% , or about 1%, up to about 20% by weight, such as, e.g., from about 0.001%, about 0.002%, about 0.003%, about 0.004%, about 0.005%, about 0.006%, about 0.007%, about 0.008%, about 0.009%, about 0.01%, about 0.02%, about 0.03%, about 0.04%, about 0.05%, about 0.06%, about 0.07%, about 0.08%, about 0.09%, about 0.1%, about 0.2%, about 0.3%, about 0.4%, about 0.5% about 0.6%, about 0.7%, about 0.8%, or about 0.9%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 11%, about 12%, about 13%, about 14%, about 15%, about 16%, about 17%, about 18%, about 19%, or about 20% by weight, based on the total weight of the composition. Further suitable ranges for specific active ingredients are provided herein below.
Botanical
In some embodiments, the active ingredient comprises a botanical ingredient. As used herein, the term “botanical ingredient” or “botanical” refers to any plant material or fungal-derived material, including plant material in its natural form and plant material derived from natural plant materials, such as extracts or isolates from plant materials or treated plant materials (e.g., plant materials subjected to heat treatment, fermentation, bleaching, or other treatment processes capable of altering the physical and/or chemical nature of the material). For the purposes of the present disclosure, a “botanical” includes, but is not limited to, “herbal materials,” which refer to seed-producing plants that do not develop persistent woody tissue and are often valued for their medicinal or sensory characteristics (e.g., teas or tisanes). Reference to botanical material as “non-tobacco” is intended to exclude tobacco materials (i.e., does not include any Nicotiana species). In some embodiments, the compositions as disclosed herein can be characterized as free of any tobacco material (e.g., any embodiment as disclosed herein may be completely or substantially free of any tobacco material). By “substantially free” is meant that no tobacco material has been intentionally added. For example, certain embodiments can be characterized as having less than 0.001% by weight of tobacco, or less than 0.0001%, or even 0% by weight of tobacco.
When present, a botanical is typically at a concentration of from about 0.01% w/w to about 10% by weight, such as, e.g., from about 0.01% w/w, about 0.05%, about 0.1%, or about 0.5%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, or about 10%, about 11%, about 12%, about 13%, about 14%, or about 15% by weight, based on the total weight of the composition.
The botanical materials useful in the present disclosure may comprise, without limitation, any of the compounds and sources set forth herein, including mixtures thereof. Certain botanical materials of this type are sometimes referred to as dietary supplements, nutraceuticals, “phytochemicals” or “functional foods.” Certain botanicals, as the plant material or an extract thereof, have found use in traditional herbal medicine, and are described further herein. Non-limiting examples of botanicals or botanical-derived materials include ashwagandha, Bacopa monniera, baobab, basil, Centella asiatica, Chai-hu, chamomile, cherry blossom, chlorophyll, cinnamon, citrus, cloves, cocoa, cordyceps, curcumin, damiana, Dorstenia arifolia, Dorstenia odorata, essential oils, eucalyptus, fennel, Galphimia glauca, ginger, Ginkgo biloba, ginseng (e.g., Panax ginseng), green tea, Griffonia simplicifolia, guarana, cannabis, hemp, hops, jasmine, Kaempferia parviflora (Thai ginseng), kava, lavender, lemon balm, lemongrass, licorice, lutein, maca, matcha, Nardostachys chinensis, oil-based extract of Viola odorata, peppermint, quercetin, resveratrol, Rhizoma gastrodiae, Rhodiola, rooibos, rose essential oil, rosemary, Sceletium tortuosum, Schisandra, Skullcap, spearmint extract, Spikenard, terpenes, tisanes, turmeric, Turnera aphrodisiaca, valerian, white mulberry, and Yerba mate.
In some embodiments, the active ingredient comprises lemon balm. Lemon balm (Melissa officinalis) is a mildly lemon-scented herb from the same family as mint (Lamiaceae). The herb is native to Europe, North Africa, and West Asia. The tea of lemon balm, as well as the essential oil and the extract, are used in traditional and alternative medicine. In some embodiments, the active ingredient comprises lemon balm extract. In some embodiments, the lemon balm extract is present in an amount of from about 1 to about 4% by weight, based on the total weight of the composition.
In some embodiments, the active ingredient comprises ginseng. Ginseng is the root of plants of the genus Panax, which are characterized by the presence of unique steroid saponin phytochemicals (ginsenosides) and gintonin. Ginseng finds use as a dietary supplement in energy drinks or herbal teas, and in traditional medicine. Cultivated species include Korean ginseng (P. ginseng), South China ginseng (P. notoginseng), and American ginseng (P. quinquefolius). American ginseng and Korean ginseng vary in the type and quantity of various ginsenosides present. In some embodiments, the ginseng is American ginseng or Korean ginseng. In specific embodiments, the active ingredient comprises Korean ginseng. In some embodiments, ginseng is present in an amount of from about 0.4 to about 0.6% by weight, based on the total weight of the composition.
Stimulants
In some embodiments, the active ingredient comprises one or more stimulants. As used herein, the term “stimulant” refers to a material that increases activity of the central nervous system and/or the body, for example, enhancing focus, cognition, vigor, mood, alertness, and the like. Non-limiting examples of stimulants include caffeine, theacrine, theobromine, and theophylline. Theacrine (1,3,7,9-tetramethyluric acid) is a purine alkaloid which is structurally related to caffeine, and possesses stimulant, analgesic, and anti-inflammatory effects. Present stimulants may be natural, naturally derived, or wholly synthetic. For example, certain botanical materials (guarana, tea, coffee, cocoa, and the like) may possess a stimulant effect by virtue of the presence of e.g., caffeine or related alkaloids, and accordingly are “natural” stimulants. By “naturally derived” is meant the stimulant (e.g., caffeine, theacrine) is in a purified form, outside its natural (e.g., botanical) matrix. For example, caffeine can be obtained by extraction and purification from botanical sources (e.g., tea). By “wholly synthetic”, it is meant that the stimulant has been obtained by chemical synthesis. In some embodiments, the active ingredient comprises caffeine. In some embodiments, the caffeine is present in an encapsulated form. On example of an encapsulated caffeine is Vitashure®, available from Balchem Corp., 52 Sunrise Park Road, New Hampton, N.Y., 10958.
When present, a stimulant or combination of stimulants (e.g., caffeine, theacrine, and combinations thereof) is typically at a concentration of from about 0.1% w/w to about 15% by weight, such as, e.g., from about 0.1% w/w, about 0.2%, about 0.3%, about 0.4%, about 0.5% about 0.6%, about 0.7%, about 0.8%, or about 0.9%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 11%, about 12%, about 13%, about 14%, or about 15% by weight, based on the total weight of the composition. In some embodiments, the composition comprises caffeine in an amount of from about 1.5 to about 6% by weight, based on the total weight of the composition;
Amino Acids
In some embodiments, the active ingredient comprises an amino acid. As used herein, the term “amino acid” refers to an organic compound that contains amine (−NH2) and carboxyl (—COOH) or sulfonic acid (SO3H) functional groups, along with a side chain (R group), which is specific to each amino acid. Amino acids may be proteinogenic or non-proteinogenic. By “proteinogenic” is meant that the amino acid is one of the twenty naturally occurring amino acids found in proteins. The proteinogenic amino acids include alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine. By “non-proteinogenic” is meant that either the amino acid is not found naturally in protein, or is not directly produced by cellular machinery (e.g., is the product of post-tranlational modification). Non-limiting examples of non-proteinogenic amino acids include gamma-aminobutyric acid (GABA), taurine (2-aminoethanesulfonic acid), theanine (L-γ-glutamylethylamide), hydroxyproline, and beta-alanine. In some embodiments, the active ingredient comprises theanine. In some embodiments, the active ingredient comprises GABA. In some embodiments, the active ingredient comprises a combination of theanine and GABA. In some embodiments, the active ingredient is a combination of theanine, GABA, and lemon balm. In some embodiments, the active ingredient is a combination of caffeine, theanine, and ginseng. In some embodiments, the active ingredient comprises taurine. In some embodiments, the active ingredient is a combination of caffeine and taurine.
Without being bound by any theory of operation, it is believed that certain amino acids, such as theanine, tryptophan, GABA, or taurine, can have beneficial impact on mood, anxiety level, focus, or cognitive performance, particularly when combined with other active ingredients, such as caffeine or certain botanicals.
When present, an amino acid or combination of amino acids (e.g., theanine, taurine, GABA, tryptophan, and combinations thereof) is typically at a concentration of from about 0.01% w/w to about 15% by weight, such as, e.g., from about 0.1% w/w, about 0.2%, about 0.3%, about 0.4%, about 0.5% about 0.6%, about 0.7%, about 0.8%, or about 0.9%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 11%, about 12%, about 13%, about 14%, or about 15% by weight, based on the total weight of the composition.
In one embodiment, the at least one active ingredient comprises tryptophan in an amount by weight from about 0.03% to about 1%, or from about 0.05% to about 0.5%.
Vitamins
In some embodiments, the active ingredient comprises a vitamin or combination of vitamins. As used herein, the term “vitamin” refers to an organic molecule (or related set of molecules) that is an essential micronutrient needed for the proper functioning of metabolism in a mammal. There are thirteen vitamins required by human metabolism, which are: vitamin A (as all-trans-retinol, all-trans-retinyl-esters, as well as all-trans-beta-carotene and other provitamin A carotenoids), vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folic acid or folate), vitamin B12 (cobalamins), vitamin C (ascorbic acid), vitamin D (calciferols), vitamin E (tocopherols and tocotrienols), and vitamin K (quinones). In some embodiments, the active ingredient comprises vitamin C. In some embodiments, the active ingredient is a combination of vitamin C, caffeine, and taurine.
When present, a vitamin or combination of vitamins (e.g., vitamin B6, vitamin B12, vitamin E, vitamin C, or a combination thereof) is typically at a concentration of from about 0.0001% to about 6% by weight, such as, e.g., from about 0.0001, about 0.001, about 0.01%, about 0.02%, about 0.03%, about 0.04%, about 0.05%, about 0.06%, about 0.07%, about 0.08%, about 0.09%, or about 0.1% w/w, to about 0.2%, about 0.3%, about 0.4%, about 0.5%, about 0.6%, about 0.7%, about 0.8%, about 0.9%, about 1%, about 2%, about 3%, about 4%, about 5% , or about 6% by weight, based on the total weight of the composition. In some embodiments, a vitamin may be present in an encapsulated form.
In some embodiments, the active ingredient comprises vitamin B6 in an amount from about 0.008% to about 0.06% by weight, or from about 0.01% to about 0.04% by weight.
In some embodiments, the active ingredient comprises vitamin B12 in an amount from about 0.0001% to about 0.007% by weight, or from about 0.0005% to about 0.001% by weight.
In some embodiments, the active ingredient comprises a combination of vitamin B6 and vitamin B12 in a total amount by weight from about 0.008% to about 0.07%.
Antioxidants
In some embodiments, the active ingredient comprises one or more antioxidants. As used herein, the term “antioxidant” refers to a substance which prevents or suppresses oxidation by terminating free radical reactions, and may delay or prevent some types of cellular damage. Antioxidants may be naturally occurring or synthetic. Naturally occurring antioxidants include those found in foods and botanical materials. Non-limiting examples of antioxidants include certain botanical materials, vitamins, polyphenols, and phenol derivatives.
Examples of botanical materials which are associated with antioxidant characteristics include without limitation acai berry, alfalfa, allspice, annatto seed, apricot oil, basil, bee balm, wild bergamot, black pepper, blueberries, borage seed oil, bugleweed, cacao, calamus root, catnip, catuaba, cayenne pepper, chaga mushroom, chervil, cinnamon, dark chocolate, potato peel, grape seed, ginseng, gingko biloba, Saint John's Wort, saw palmetto, green tea, black tea, black cohosh, cayenne, chamomile, cloves, cocoa powder, cranberry, dandelion, grapefruit, honeybush, echinacea, garlic, evening primrose, feverfew, ginger, goldenseal, hawthorn, hibiscus flower, jiaogulan, kava, lavender, licorice, marjoram, milk thistle, mints (menthe), oolong tea, beet root, orange, oregano, papaya, pennyroyal, peppermint, red clover, rooibos (red or green), rosehip, rosemary, sage, clary sage, savory, spearmint, spirulina, slippery elm bark, sorghum bran hi-tannin, sorghum grain hi-tannin, sumac bran, comfrey leaf and root, goji berries, gutu kola, thyme, turmeric, uva ursi, valerian, wild yam root, wintergreen, yacon root, yellow dock, yerba mate, yerba santa, bacopa monniera, withania somnifera, Lion's mane, and silybum marianum. Such botanical materials may be provided in fresh or dry form, essential oils, or may be in the form of an extracts. The botanical materials (as well as their extracts) often include compounds from various classes known to provide antioxidant effects, such as minerals, vitamins, isoflavones, phytoesterols, allyl sulfides, dithiolthiones, isothiocyanates, indoles, lignans, flavonoids, polyphenols, and carotenoids. Examples of compounds found in botanical extracts or oils include ascorbic acid, peanut endocarb, resveratrol, sulforaphane, beta-carotene, lycopene, lutein, co-enzyme Q, carnitine, quercetin, kaempferol, and the like. See, e.g., Santhosh et al., Phytomedicine, 12(2005) 216-220, which is incorporated herein by reference.
Non-limiting examples of other suitable antioxidants include citric acid, Vitamin E or a derivative thereof, a tocopherol, epicatechol, epigallocatechol, epigallocatechol gallate, erythorbic acid, sodium erythorbate, 4-hexylresorcinol, theaflavin, theaflavin monogallate A or B, theaflavin digallate, phenolic acids, glycosides, quercitrin, isoquercitrin, hyperoside, polyphenols, catechols, resveratrols, oleuropein, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), tertiary butylhydroquinone (TBHQ), and combinations thereof.
When present, an antioxidant is typically at a concentration of from about 0.001% w/w to about 10% by weight, such as, e.g., from about 0.001%, about 0.005%, about 0.01% w/w, about 0.05%, about 0.1%, or about 0.5%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, or about 10%, based on the total weight of the composition.
Nicotine Component
In certain embodiments, the active ingredient comprises a nicotine component. By “nicotine component” is meant any suitable form of nicotine (e.g., free base or salt) for providing oral absorption of at least a portion of the nicotine present. Typically, the nicotine component is selected from the group consisting of nicotine free base and a nicotine salt.
In some embodiments, at least a portion of the nicotine component can be employed in the form of a salt. Salts of nicotine can be provided using the types of ingredients and techniques set forth in U.S. Pat. No. 2,033,909 to Cox et al. and Perfetti, Beitrage Tabakforschung Int., 12: 43-54 (1983), which are incorporated herein by reference. Additionally, salts of nicotine are available from sources such as Pfaltz and Bauer, Inc. and K&K Laboratories, Division of ICN Biochemicals, Inc. Typically, the nicotine component is selected from the group consisting of nicotine free base, a nicotine salt such as hydrochloride, dihydrochloride, monotartrate, bitartrate, sulfate, salicylate, and nicotine zinc chloride.
In some embodiments, at least a portion of the nicotine can be in the form of a resin complex of nicotine, where nicotine is bound in an ion-exchange resin, such as nicotine polacrilex, which is nicotine bound to, for example, a polymethacrilic acid, such as Amberlite IRP64, Purolite C115HMR, or Doshion P551. See, for example, U.S. Pat. No. 3,901,248 to Lichtneckert et al., which is incorporated herein by reference. Another example is a nicotine-polyacrylic carbomer complex, such as with Carbopol 974P. In some embodiments, nicotine may be present in the form of a nicotine polyacrylic complex.
Typically, the nicotine component (calculated as the free base) when present, is in a concentration of at least about 0.001% by weight of the composition, such as in a range from about 0.001% to about 10%. In some embodiments, the nicotine component is present in a concentration from about 0.1% w/w to about 10% by weight, such as, e.g., from about 0.1% w/w, about 0.2%, about 0.3%, about 0.4%, about 0.5% about 0.6%, about 0.7%, about 0.8%, or about 0.9%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, or about 10% by weight, calculated as the free base and based on the total weight of the composition. In some embodiments, the nicotine component is present in a concentration from about 0.1% w/w to about 3% by weight, such as, e.g., from about 0.1% w/w to about 2.5%, from about 0.1% to about 2.0%, from about 0.1% to about 1.5%, or from about 0.1% to about 1% by weight, calculated as the free base and based on the total weight of the composition.
In some embodiments, the products or compositions of the disclosure can be characterized as free of any nicotine component (e.g., any embodiment as disclosed herein may be completely or substantially free of any nicotine component). By “substantially free” is meant that no nicotine has been intentionally added, beyond trace amounts that may be naturally present in e.g., a botanical material. For example, certain embodiments can be characterized as having less than 0.001% by weight of nicotine, or less than 0.0001%, or even 0% by weight of nicotine, calculated as the free base.
In some embodiments, the active ingredient comprises a nicotine component (e.g., any product or composition of the disclosure, in addition to comprising any active ingredient or combination of active ingredients as disclosed herein, may further comprise a nicotine component).
Cannabinoids
In some embodiments, the lipophilic active ingredient comprises one or more cannabinoids. As used herein, the term “cannabinoid” refers to a class of diverse natural or synthetic chemical compounds that acts on cannabinoid receptors (i.e., CB1 and CB2) in cells that alter neurotransmitter release in the brain. Cannabinoids are cyclic molecules exhibiting particular properties such as the ability to easily cross the blood-brain barrier. Cannabinoids may be naturally occurring (Phytocannabinoids) from plants such as cannabis, (endocannabinoids) from animals, or artificially manufactured (synthetic cannabinoids). Cannabis species express at least 85 different phytocannabinoids, and these may be divided into subclasses, including cannabigerols, cannabichromenes, cannabidiols, tetrahydrocannabinols, cannabinols and cannabinodiols, and other cannabinoids, such as cannabigerol (CBG), cannabichromene (CBC), cannabidiol (CBD), tetrahydrocannabinol (THC), cannabinol (CBN) and cannabinodiol (CBDL), cannabicyclol (CBL), cannabivarin (CBV), tetrahydrocannabivarin (THCV), cannabidivarin (CBDV), cannabichromevarin (CBCV), cannabigerovarin (CBGV), cannabigerol monomethyl ether (CBGM), cannabinerolic acid, cannabidiolic acid (CBDA), Cannabinol propyl variant (CBNV), cannabitriol (CBO), tetrahydrocannabmolic acid (THCA), and tetrahydrocannabivarinic acid (THCV A).
In some embodiments, the cannabinoid is selected from the group consisting of cannabigerol (CBG), cannabichromene (CBC), cannabidiol (CBD), tetrahydrocannabinol (THC), cannabinol (CBN) and cannabinodiol (CBDL), cannabicyclol (CBL), cannabivarin (CBV), tetrahydrocannabivarin (THCV), cannabidivarin (CBDV), cannabichromevarin (CBCV), cannabigerovarin (CBGV), cannabigerol monomethyl ether (CBGM), cannabinerolic acid, cannabidiolic acid (CBDA), Cannabinol propyl variant (CBNV), cannabitriol (CBO), tetrahydrocannabmolic acid (THCA), tetrahydrocannabivarinic acid (THCV A), and mixtures thereof. In some embodiments, the cannabinoid comprises at least tetrahydrocannabinol (THC). In some embodiments, the cannabinoid is tetrahydrocannabinol (THC). In some embodiments, the cannabinoid comprises at least cannabidiol (CBD). In some embodiments, the cannabinoid is cannabidiol (CBD). In some embodiments, the CBD is synthetic CBD. Notably, CBD has a logP value of about 6.5, making it insoluble in an aqueous environment (e.g., saliva).
In some embodiments, the cannabinoid (e.g., CBD) is added to the oral product in the form of an isolate. An isolate is an extract from a plant, such as cannabis, where the active material of interest (in this case the cannabinoid, such as CBD) is present in a high degree of purity, for example greater than 95%, greater than 96%, greater than 97%, greater than 98%, or around 99% purity.
In some embodiments, the cannabinoid is an isolate of CBD in a high degree of purity, and the amount of any other cannabinoid in the oral product is no greater than about 1% by weight of the oral product, such as no greater than about 0.5% by weight of the oral product, such as no greater than about 0.1% by weight of the oral product, such as no greater than about 0.01% by weight of the oral product.
The choice of cannabinoid and the particular percentages thereof which may be present within the disclosed oral product will vary depending upon the desired flavor, texture, and other characteristics of the oral product.
Alternatively, or in addition to the cannabinoid, the lipophilic active agent may include a cannabimimetic, which is a class of compounds derived from plants other than cannabis that have biological effects on the endocannabinoid system similar to cannabinoids. Examples include yangonin, alpha-amyrin or beta-amyrin (also classified as terpenes), cyanidin, curcumin (tumeric), catechin, quercetin, salvinorin A, N-acylethanolamines, and N-alkylamide lipids. Such compounds can be used in the same amounts and ratios noted herein for cannabinoids.
When present, a cannabinoid (e.g., CBD) or cannabimimetic is typically in a concentration of at least about 0.1% by weight of the composition, such as in a range from about 0.1% to about 30%, such as, e.g., from about 0.1%, about 0.2%, about 0.3%, about 0.4%, about 0.5% about 0.6%, about 0.7%, about 0.8%, or about 0.9%, to about 1%, about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, about 10%, about 15%, about 20%, or about 30% by weight, based on the total weight of the composition. In some embodiments, the cannabinoid (such as CBD) is present in the oral product in a concentration of at least about 0.001% by weight of the oral product, such as in a range from about 0.001% to about 2% by weight of the oral product. In some embodiments, the cannabinoid (such as CBD) is present in the oral product in a concentration of from about 0.1% to about 1.5% by weight, based on the total weight of the oral product. In some embodiments, the cannabinoid (such as CBD) is present in a concentration from about 0.4% to about 1.5% by weight, based on the total weight of the oral product.
Terpenes
Lipophilic active ingredients suitable for use in the present disclosure can also be classified as terpenes, many of which are associated with biological effects, such as calming effects. Terpenes are understood to have the general formula of (C5H8)n and include monoterpenes, sesquiterpenes, and diterpenes. Terpenes can be acyclic, monocyclic or bicyclic in structure. Some terpenes provide an entourage effect when used in combination with cannabinoids or cannabimimetics. Examples include beta-caryophyllene, linalool, limonene, beta-citronellol, linalyl acetate, pinene (alpha or beta), geraniol, carvone, eucalyptol, menthone, iso-menthone, piperitone, myrcene, beta-bourbonene, and germacrene, which may be used singly or in combination.
In some embodiments, the terpene is a terpene derivable from a phytocannabinoid producing plant, such as a plant from the stain of the cannabis sativa species, such as hemp. Suitable terpenes in this regard include so-called “C10” terpenes, which are those terpenes comprising 10 carbon atoms, and so-called “C15” terpenes, which are those terpenes comprising 15 carbon atoms. In some embodiments, the active ingredient comprises more than one terpene. For example, the active ingredient may comprise one, two, three, four, five, six, seven, eight, nine, ten or more terpenes as defined herein. In some embodiments, the terpene is selected from pinene (alpha and beta), geraniol, linalool, limonene, carvone, eucalyptol, menthone, iso-menthone, piperitone, myrcene, beta-bourbonene, germacrene and mixtures thereof.
Pharmaceutical Ingredients
In some embodiments, the active ingredient comprises an active pharmaceutical ingredient (API). The API can be any known agent adapted for therapeutic, prophylactic, or diagnostic use. These can include, for example, synthetic organic compounds, proteins and peptides, polysaccharides and other sugars, lipids, phospholipids, inorganic compounds (e.g., magnesium, selenium, zinc, nitrate), neurotransmitters or precursors thereof (e.g., serotonin, 5-hydroxytryptophan, oxitriptan, acetylcholine, dopamine, melatonin), and nucleic acid sequences, having therapeutic, prophylactic, or diagnostic activity. Non-limiting examples of APIs include analgesics and antipyretics (e.g., acetylsalicylic acid, acetaminophen, 3-(4-isobutylphenyl)propanoic acid), phosphatidylserine, myoinositol, docosahexaenoic acid (DHA, Omega-3), arachidonic acid (AA, Omega-6), S-adenosylmethionine (SAM), beta-hydroxy-beta-methylbutyrate (HMB), citicoline (cytidine-5′-diphosphate-choline), and cotinine. In some embodiments, the active ingredient comprises citicoline. In some embodiments, the active ingredient is a combination of citicoline, caffeine, theanine, and ginseng. In some embodiments, the active ingredient comprises sunflower lecithin. In some embodiments, the active ingredient is a combination of sunflower lecithin, caffeine, theanine, and ginseng.
The amount of API may vary. For example, when present, an API is typically at a concentration of from about 0.001% w/w to about 10% by weight, such as, e.g., from about 0.01%, about 0.02%, about 0.03%, about 0.04%, about 0.05%, about 0.06%, about 0.07%, about 0.08%, about 0.09%, about 0.1% w/w, about 0.2%, about 0.3%, about 0.4%, about 0.5% about 0.6%, about 0.7%, about 0.8%, about 0.9%, or about 1%, to about 2%, about 3%, about 4%, about 5%, about 6%, about 7%, about 8%, about 9%, or about 10% by weight, based on the total weight of the composition.
In some embodiments, the composition is substantially free of any API. By “substantially free of any API” means that the composition does not contain, and specifically excludes, the presence of any API as defined herein, such as any Food and Drug Administration (FDA) approved therapeutic agent intended to treat any medical condition.
Advantageously, in some embodiments, the compositions and products of the present disclosure may provide the active ingredient(s) contained therein (e.g., such as nicotine) in relatively low amounts when compared to traditional smokeless tobacco products commonly known in the art. It should be noted that embodiments particularly including nicotine in relatively low amounts advantageously provides compositions and products having a more desirable delivery profile of active nicotine and improved organoleptic properties when those products are inserted into the oral cavity of a user of those products. For example, oral products of the present disclosure may exhibit improved flavor characteristics, improved appearance (e.g., translucency or transparency), and improved mouthfeel when compared to traditional smokeless tobacco products having higher amounts of nicotine or tobacco materials incorporated therein. Such improvements are achieved by providing oral products with lower amounts of active ingredients therein. For example, the compositions and products as described herein may comprise an active ingredient in the form of a nicotine component in an amount of less than about 2 weight percent, based on the total weight of the composition. In some embodiments, the oral product may comprise a nicotine component in an amount of less than about 2 weight percent, less than about 1.75 weight percent, less than about 1.5 weight percent, less than about 1.25 weight percent, less than about 1.0 weight percent, less than about 0.75 weight percent, less than about 0.50 weight percent, or less than about 0.25 weight percent, based on the total weight of the composition.
In some embodiments, oral products according to the present disclosure may further comprise a tobacco material. The tobacco material can vary in species, type, and form. Generally, the tobacco material is obtained from for a harvested plant of the Nicotiana species. Example Nicotiana species include N. tabacum, N. rustica, N. alata, N. arentsii, N. excelsior, N. forgetiana, N. glauca, N. glutinosa, N. gossei, N. kawakamii, N. knightiana, N. langsdorffi, N. otophora, N. setchelli, N. sylvestris, N. tomentosa, N. tomentosiformis, N. undulata, N. x sanderae, N. africana, N. amplexicaulis, N. benavidesii, N. bonariensis, N. debneyi, N. longiflora, N. maritina, N. megalosiphon, N. occidentalis, N. paniculata, N. plumbaginifolia, N. raimondii, N. rosulata, N. simulans, N. stocktonii, N. suaveolens, N. umbratica, N. velutina, N. wigandioides, N. acaulis, N. acuminata, N. attenuata, N. benthamiana, N. cavicola, N. clevelandii, N. cordifolia, N. corymbosa, N. fragrans, N. goodspeedii, N. linearis, N. miersii, N. nudicaulis, N. obtusifolia, N. occidentalis subsp. Hersperis, N. pauciflora, N. petunioides, N. quadrivalvis, N. repanda, N. rotundifolia, N. solanifolia, and N. spegazzinii. Various representative other types of plants from the Nicotiana species are set forth in Goodspeed, The Genus Nicotiana, (Chonica Botanica) (1954); U.S. Pat. No. 4,660,577 to Sensabaugh, Jr. et al.; U.S. Pat. No. 5,387,416 to White et al., U.S. Pat. No. 7,025,066 to Lawson et al.; U.S. Pat. No. 7,798,153 to Lawrence, Jr. and U.S. Pat. No. 8,186,360 to Marshall et al.; each of which is incorporated herein by reference. Descriptions of various types of tobaccos, growing practices and harvesting practices are set forth in Tobacco Production, Chemistry and Technology, Davis et al. (Eds.) (1999), which is incorporated herein by reference.
Nicotiana species from which suitable tobacco materials can be obtained can be derived using genetic-modification or crossbreeding techniques (e.g., tobacco plants can be genetically engineered or crossbred to increase or decrease production of components, characteristics or attributes). See, for example, the types of genetic modifications of plants set forth in U.S. Pat. No. 5,539,093 to Fitzmaurice et al.; U.S. Pat. No. 5,668,295 to Wahab et al.; U.S. Pat. No. 5,705,624 to Fitzmaurice et al.; U.S. Pat. No. 5,844,119 to Weigl; U.S. Pat. No. 6,730,832 to Dominguez et al.; U.S. Pat. No. 7,173,170 to Liu et al.; U.S. Pat. No. 7,208,659 to Colliver et al. and U.S. Pat. No. 7,230,160 to Benning et al.; US Patent Appl. Pub. No. 2006/0236434 to Conkling et al.; and PCT WO2008/103935 to Nielsen et al. See, also, the types of tobaccos that are set forth in U.S. Pat. No. 4,660,577 to Sensabaugh, Jr. et al.; U.S. Pat. No. 5,387,416 to White et al.; and U.S. Pat. No. 6,730,832 to Dominguez et al., each of which is incorporated herein by reference.
The Nicotiana species can, in some embodiments, be selected for the content of various compounds that are present therein. For example, plants can be selected on the basis that those plants produce relatively high quantities of one or more of the compounds desired to be isolated therefrom. In certain embodiments, plants of the Nicotiana species (e.g., Galpao commun tobacco) are specifically grown for their abundance of leaf surface compounds. Tobacco plants can be grown in greenhouses, growth chambers, or outdoors in fields, or grown hydroponically.
Various parts or portions of the plant of the Nicotiana species can be included within the compositions as disclosed herein. For example, virtually all of the plant (e.g., the whole plant) can be harvested, and employed as such. Alternatively, various parts or pieces of the plant can be harvested or separated for further use after harvest. For example, the flower, leaves, stem, stalk, roots, seeds, and various combinations thereof, can be isolated for further use or treatment. In some embodiments, the tobacco material comprises tobacco leaf (lamina). The compositions disclosed herein can include processed tobacco parts or pieces, cured and aged tobacco in essentially natural lamina and/or stem form, a tobacco extract, extracted tobacco pulp (e.g., using water as a solvent), or a mixture of the foregoing (e.g., a mixture that combines extracted tobacco pulp with granulated cured and aged natural tobacco lamina).
In certain embodiments, the tobacco material comprises solid tobacco material selected from the group consisting of lamina and stems. The tobacco that is used for the mixture most preferably includes tobacco lamina, or a tobacco lamina and stem mixture (of which at least a portion is smoke-treated). Portions of the tobaccos within the mixture may have processed forms, such as processed tobacco stems (e.g., cut-rolled stems, cut-rolled-expanded stems or cut-puffed stems), or volume expanded tobacco (e.g., puffed tobacco, such as dry ice expanded tobacco (DIET)). See, for example, the tobacco expansion processes set forth in U.S. Pat. Nos. 4,340,073 to de la Burde et al.; U.S. Pat. No. 5,259,403 to Guy et al.; and U.S. Pat. No. 5,908,032 to Poindexter, et al.; and U.S. Pat. No. 7,556,047 to Poindexter, et al., all of which are incorporated by reference. In addition, the d mixture optionally may incorporate tobacco that has been fermented. See, also, the types of tobacco processing techniques set forth in PCT W02005/063060 to Atchley et al., which is incorporated herein by reference.
The tobacco material is typically used in a form that can be described as particulate (i.e., shredded, ground, granulated, or powder form). The manner by which the tobacco material is provided in a finely divided or powder type of form may vary. Preferably, plant parts or pieces are comminuted, ground or pulverized into a particulate form using equipment and techniques for grinding, milling, or the like. Most preferably, the plant material is relatively dry in form during grinding or milling, using equipment such as hammer mills, cutter heads, air control mills, or the like. For example, tobacco parts or pieces may be ground or milled when the moisture content thereof is less than about 15 weight percent or less than about 5 weight percent. Most preferably, the tobacco material is employed in the form of parts or pieces that have an average particle size between 1.4 millimeters and 250 microns. In some instances, the tobacco particles may be sized to pass through a screen mesh to obtain the particle size range required. If desired, air classification equipment may be used to ensure that small sized tobacco particles of the desired sizes, or range of sizes, may be collected. If desired, differently sized pieces of granulated tobacco may be mixed together.
The manner by which the tobacco is provided in a finely divided or powder type of form may vary. Preferably, tobacco parts or pieces are comminuted, ground or pulverized into a powder type of form using equipment and techniques for grinding, milling, or the like. Most preferably, the tobacco is relatively dry in form during grinding or milling, using equipment such as hammer mills, cutter heads, air control mills, or the like. For example, tobacco parts or pieces may be ground or milled when the moisture content thereof is less than about 15 weight percent to less than about 5 weight percent. For example, the tobacco plant or portion thereof can be separated into individual parts or pieces (e.g., the leaves can be removed from the stems, and/or the stems and leaves can be removed from the stalk). The harvested plant or individual parts or pieces can be further subdivided into parts or pieces (e.g., the leaves can be shredded, cut, comminuted, pulverized, milled or ground into pieces or parts that can be characterized as filler-type pieces, granules, particulates or fine powders). The plant, or parts thereof, can be subjected to external forces or pressure (e.g., by being pressed or subjected to roll treatment). When carrying out such processing conditions, the plant or portion thereof can have a moisture content that approximates its natural moisture content (e.g., its moisture content immediately upon harvest), a moisture content achieved by adding moisture to the plant or portion thereof, or a moisture content that results from the drying of the plant or portion thereof. For example, powdered, pulverized, ground or milled pieces of plants or portions thereof can have moisture contents of less than about 25 weight percent, often less than about 20 weight percent, and frequently less than about 15 weight percent.
For the preparation of oral products, it is typical for a harvested plant of the Nicotiana species to be subjected to a curing process. The tobacco materials incorporated within the compositions for inclusion within products as disclosed herein are those that have been appropriately cured and/or aged. Descriptions of various types of curing processes for various types of tobaccos are set forth in Tobacco Production, Chemistry and Technology, Davis et al. (Eds.) (1999). Examples of techniques and conditions for curing flue-cured tobacco are set forth in Nestor et al., Beitrage Tabakforsch. Int., 20, 467-475 (2003) and U.S. Pat. No. 6,895,974 to Peele, which are incorporated herein by reference. Representative techniques and conditions for air curing tobacco are set forth in U.S. Pat. No. 7,650,892 to Groves et al.; Roton et al., Beitrage Tabakforsch. Int., 21, 305-320 (2005) and Staaf et al., Beitrage Tabakforsch. Int., 21, 321-330 (2005), which are incorporated herein by reference. Certain types of tobaccos can be subjected to alternative types of curing processes, such as fire curing or sun curing.
In certain embodiments, tobacco materials that can be employed include flue-cured or Virginia (e.g., K326), burley, sun-cured (e.g., Indian Kurnool and Oriental tobaccos, including Katerini, Prelip, Komotini, Xanthi and Yambol tobaccos), Maryland, dark, dark-fired, dark air cured (e.g., Madole, Passanda, Cubano, Jatin and Bezuki tobaccos), light air cured (e.g., North Wisconsin and Galpao tobaccos), Indian air cured, Red Russian and Rustica tobaccos, as well as various other rare or specialty tobaccos and various blends of any of the foregoing tobaccos.
The tobacco material may also have a so-called “blended” form. For example, the tobacco material may include a mixture of parts or pieces of flue-cured, burley (e.g., Malawi burley tobacco) and Oriental tobaccos (e.g., as tobacco composed of, or derived from, tobacco lamina, or a mixture of tobacco lamina and tobacco stem). For example, a representative blend may incorporate about 30 to about 70 parts burley tobacco (e.g., lamina, or lamina and stem), and about 30 to about 70 parts flue cured tobacco (e.g., stem, lamina, or lamina and stem) on a weight basis. Other example tobacco blends incorporate about 75 parts flue-cured tobacco, about 15 parts burley tobacco, and about 10 parts Oriental tobacco; or about 65 parts flue-cured tobacco, about 25 parts burley tobacco, and about 10 parts Oriental tobacco; or about 65 parts flue-cured tobacco, about 10 parts burley tobacco, and about 25 parts Oriental tobacco; on a weight basis. Other example tobacco blends incorporate about 20 to about 30 parts Oriental tobacco and about 70 to about 80 parts flue-cured tobacco on a weight basis.
Tobacco materials used in the present disclosure can be subjected to, for example, fermentation, bleaching, and the like. If desired, the tobacco materials can be, for example, irradiated, pasteurized, or otherwise subjected to controlled heat treatment. Such treatment processes are detailed, for example, in U.S. Pat. No. 8,061,362 to Mua et al., which is incorporated herein by reference. In certain embodiments, tobacco materials can be treated with water and an additive capable of inhibiting reaction of asparagine to form acrylamide upon heating of the tobacco material (e.g., an additive selected from the group consisting of lysine, glycine, histidine, alanine, methionine, cysteine, glutamic acid, aspartic acid, proline, phenylalanine, valine, arginine, compositions incorporating di- and trivalent cations, asparaginase, certain non-reducing saccharides, certain reducing agents, phenolic compounds, certain compounds having at least one free thiol group or functionality, oxidizing agents, oxidation catalysts, natural plant extracts (e.g., rosemary extract), and combinations thereof. See, for example, the types of treatment processes described in U.S. Pat. Nos. 8,434,496, 8,944,072, and 8,991,403 to Chen et al., which are all incorporated herein by reference. In certain embodiments, this type of treatment is useful where the original tobacco material is subjected to heat in the processes previously described.
At least a portion of the tobacco material employed in the tobacco composition or product can have the form of an extract. In some embodiments, all of the tobacco material employed in the tobacco composition or product may be in the form of an extract, e.g., such as a tobacco-derived nicotine extract. Tobacco extracts can be obtained by extracting tobacco using a solvent having an aqueous character such as distilled water or tap water. As such, aqueous tobacco extracts can be provided by extracting tobacco with water, such that water insoluble pulp material is separated from the aqueous solvent and the water soluble and dispersible tobacco components dissolved and dispersed therein. The tobacco extract can be employed in a variety of forms. For example, the aqueous tobacco extract can be isolated in an essentially solvent free form, such as can be obtained as a result of the use of a spray drying or freeze drying process, or other similar types of processing steps. Alternatively, the aqueous tobacco extract can be employed in a liquid form, and as such, the content of tobacco solubles within the liquid solvent can be controlled by selection of the amount of solvent employed for extraction, concentration of the liquid tobacco extract by removal of solvent, addition of solvent to dilute the liquid tobacco extract, or the like. Example techniques for extracting components of tobacco are described in U.S. Pat. No. 4,144,895 to Fiore; U.S. Pat. No. 4,150,677 to Osborne, Jr. et al.; U.S. Pat. No. 4,267,847 to Reid; U.S. Pat. No. 4,289,147 to Wildman et al.; U.S. Pat. No. 4,351,346 to Brummer et al.; U.S. Pat. No. 4,359,059 to Brummer et al.; U.S. Pat. No. 4,506,682 to Muller; U.S. Pat. No. 4,589,428 to Keritsis; U.S. Pat. No. 4,605,016 to Soga et al.; U.S. Pat. No. 4,716,911 to Poulose et al.; U.S. Pat. No. 4,727,889 to Niven, Jr. et al.; U.S. Pat. No. 4,887,618 to Bernasek et al.; U.S. Pat. No. 4,941,484 to Clapp et al.; U.S. Pat. No. 4,967,771 to Fagg et al.; U.S. Pat. No. 4,986,286 to Roberts et al.; U.S. Pat. No. 5,005,593 to Fagg et al.; U.S. Pat. No. 5,018,540 to Grubbs et al.; U.S. Pat. No. 5,060,669 to White et al.; U.S. Pat. No. 5,065,775 to Fagg; U.S. Pat. No. 5,074,319 to White et al.; U.S. Pat. No. 5,099,862 to White et al.; U.S. Pat. No. 5,121,757 to White et al.; U.S. Pat. No. 5,131,414 to Fagg; U.S. Pat. No. 5,131,415 to Munoz et al.; U.S. Pat. No. 5,148,819 to Fagg; U.S. Pat. No. 5,197,494 to Kramer; U.S. Pat. No. 5,230,354 to Smith et al.; U.S. Pat. No. 5,234,008 to Fagg; U.S. Pat. No. 5,243,999 to Smith; U.S. Pat. No. 5,301,694 to Raymond et al.; U.S. Pat. No. 5,318,050 to Gonzalez-Parra et al.; U.S. Pat. No. 5,343,879 to Teague; U.S. Pat. No. 5,360,022 to Newton; U.S. Pat. No. 5,435,325 to Clapp et al.; U.S. Pat. No. 5,445,169 to Brinkley et al.; U.S. Pat. No. 6,131,584 to Lauterbach; U.S. Pat. No. 6,284,875 to Turpen et al.; U.S. Pat. No. 6,298,859 to Kierulff et al.; U.S. Pat. No. 6,772,767 to Mua et al.; U.S. Pat. No. 6,817,970 to Berit et al.; U.S. Pat. No. 6,906,172 to Bratcher et al.; U.S. Pat. No. 7,034,128 to Turpen et al.; U.S. Pat. No. 7,048,211 to Bratcher et al.; and U.S. Pat. No. 7,337,782 to Thompson, all of which are incorporated by reference herein.
According to the present disclosure, the Nicotiana plant or portion thereof (as described herein above) is typically subjected to processing intended to provide improved clarity of the tobacco material. In certain embodiments, the tobacco material used in the products of the invention is in the form of an extract, such as an aqueous extract of a tobacco material. Improved clarity of a tobacco extract can be obtained, for example, by removing high molecular weight components from the tobacco extract. In certain embodiments, high molecular weight components that are beneficially removed according to the present invention include, but are not limited to, high molecular weight Maillard browning polymers, proteins, polysaccharides, certain pigments, and bacteria. Various methods can be used for this purpose, including size exclusion chromatography, microfiltration, ultrafiltration, nanofiltration, reverse osmosis, and combinations thereof. Ideally, the tobacco extract may undergo an ultrafiltration process in order to provide an ultrafiltered tobacco extract. Example filters, methods and processes for ultrafiltration of tobacco materials are set forth in U.S. Pat. No. 9,084,439 to Holton Jr. and U.S. Pat. No. 9,901,113 to Holton Jr.; the entirety of which are incorporated herein by reference.
According to the present disclosure, the ultrafiltration process is designed to achieve a tobacco extract having a decreased level of suspended solids, and thus an increased level of clarity. For example, depending on the molecular weight cutoff of the filters, the ultrafiltered extract may comprise only compounds with molecular weights below about 50,000, below about 25,000, below about 10,000 Da, below about 7,500 Da, below about 5,000 Da, below about 2,500 Da, or below about 1,000 Da. The ultrafiltered extract typically comprises primarily sugars, nicotine, and amino acids.
The ultrafiltered extract exhibits a level of improvement in clarity over the non-ultrafiltered extract. Clarity of the extract, and oral products incorporating such extracts according to the present disclosure, is typically defined in terms of translucency. As used herein, “translucent” or “translucency” refers to materials allowing some level of light to travel therethrough diffusely. In certain embodiments, certain materials of the invention (e.g., certain tobacco extracts or final smokeless tobacco products made therefrom) can have such a high degree of clarity that the material can be classified as “transparent” or exhibiting “transparency,” which is defined as a material allowing light to pass freely through without significant diffusion. The clarity of the ultrafiltered extract is such that there is some level of translucency as opposed to opacity (which refers to materials that are impenetrable by light).
The improvement in clarity of the ultrafiltered extract over the non-ultrafiltered extract can be quantified by any known method. For example, optical methods such as turbidimetry (or nephelometry) and colorimetry may be used to quantify the cloudiness (light scattering) and the color (light absorption), respectively, of the ultrafiltered extract or products made therefrom. Translucency can also be confirmed by visual inspection by simply holding the material (e.g., extract) or product up to a light source and determining if light travels through the material or product in a diffuse manner.
In certain embodiments, the ultrafiltered extract is analyzed by contacting the extract with light and measuring the percent of light that has not been absorbed and/or dispersed by the extract. The measurement can be done, for example, using a standard spectrophotometer at a given wavelength. The spectrophotometer is typically calibrated with deionized water, which is assigned a transparency value of 100%. Acceptable levels of translucency/transparency at a given wavelength in the ultrafiltered extract can vary. Typically, the ultrafiltered extract has a translucency of greater than about 5%, greater than about 10%, greater than about 15%, greater than about 20%, greater than about 25%, greater than about 30%, greater than about 40%, greater than about 50%, greater than about 60%, greater than about 60%, greater than about 70%, greater than about 80%, or greater than about 90%. Typically, the ultrafiltered extract will not be colorless, and will have some discernible brown/black coloring. Following ultrafiltration, the extract can be stored in the refrigerator or freezer or the extract can be freeze dried or spray dried prior to use in the products of the invention. In certain embodiments, it is provided in syrup form.
Although in some embodiments, the tobacco extract is used directly, it may be desirable to heat treat the extract. This thermal treatment can be conducted before the ultrafiltration, after the ultrafiltration, or both before and after the ultrafiltration. For example, a tobacco material can be thermally processed by mixing the tobacco material, water, and an additive selected from the group consisting of lysine, glycine, histidine, alanine, methionine, glutamic acid, aspartic acid, proline, phenylalanine, valine, arginine, di- and trivalent cations, asparaginase, saccharides, phenolic compounds, reducing agents, compounds having a free thiol group, oxidizing agents (e.g., hydrogen peroxide), oxidation catalysts, plant extracts, and combinations thereof, to form a moist tobacco mixture; and heating the moist tobacco mixture at a temperature of at least about 60° C. to form a heat-treated tobacco mixture. In one embodiment, the treated tobacco extract is heat treated in the presence of water, NaOH, and an additive (e.g., lysine) at about 88° C. for about 60 minutes. Such heat treatment can help prevent acrylamide production resulting from reaction of asparagine with reducing sugars in tobacco materials and can provide some degree of pasteurization. See, for example, US Pat. Pub. No. 2010/0300463 to Chen et al., which is incorporated herein by reference. In certain embodiments wherein a heat-treated tobacco extract is used in a smokeless tobacco product of the present invention, the product can be characterized by very low acrylamide content. For example, in some embodiments, the smokeless tobacco product is characterized by an acrylamide content of less than about 500 ppb (ng/g), less than about 400 ppb, less than about 300 ppb, less than about 200 ppb, or less than about 100 ppb.
Accordingly, “treated tobacco extract” as used herein refers to a tobacco extract that has been treated in some way to remove high molecular weight components and thereby improve clarity (e.g., an ultrafiltered extract). The “treated tobacco extract” may or may not be heat-treated as described herein.
It should be noted that inclusion of a tobacco material into the compositions and products described herein is meant to be optional and is not required. In some embodiments, oral products as described herein can generally be characterized as being tobacco free-alternatives. For example, in some embodiments, oral products of the present disclosure may be said to be completely free or substantially free of tobacco material (other than purified nicotine as an active ingredient). Oral products that are referred to as “completely free of” or “substantially free of” a tobacco material herein are meant to refer to oral products that can be characterized as having less than about 1.0% by weight, less than about 0.5% by weight, less than about 0.1% by weight of tobacco material, or 0% by weight of tobacco material.
Buffering Agent and/or pH Adjuster
In some embodiments, the products of the present disclosure may further comprise one or more buffering agents and/or pH adjusters (i.e., acids or bases). In such embodiments, the one or more buffering agents and/or pH adjusters are added to the mixture to ensure that the final oral product has a pH within a desirable range. Example pH ranges for oral products as described herein are generally from about 5 to about 7. In such embodiments, the amount of buffering agent and/or pH adjuster added to the product mixture is simply that amount required to bring the formulation to or keep the formulation at the desired pH. The amount of buffering agent and/or pH adjuster added to any given formulation can be readily calculated by one skilled in the art based on the desired pH and may comprise, for example, about 0.5% to about 1% by weight of the mixture. In some embodiments, the quantity of pH adjuster present may vary based on the acidity and basicity of other components which may be present in the composition (e.g., nicotine, salts, buffers, and the like). Accordingly, the buffering agent and/or pH adjuster is provided in a quantity sufficient to provide a pH of the composition of from about 5.0 to about 7.0, for example, from about 5.0, about 5.5, or about 6.0, to about 6.5, or about 7.0. In some embodiments, the organic acid is provided in a quantity sufficient to provide a pH of the composition of from about 5.5 to about 6.5, for example, from about 5.5, about 5.6, about 5.7, about 5.8, about 5.9, or about 6.0, to about 6.1, about 6.2, about 6.3, about 6.4, or about 6.5.
It should be noted that the pH level of the oral products may be varied to alter certain characteristics of the product, for example, the release profile of the active ingredient contained within the product. For example, in some embodiments, an amount of buffering agent (e.g., such as a citric acid) may be incorporated into the product so as to alter the overall pH of that product to be between about 5.0 and 7.0, as noted above. Preferably, in some embodiments, the pH may be adjusted to a pH of approximately 5.5. Advantageously, it was discovered that adding citric acid to adjust the pH of the products described herein to a pH of around 5.5 generally reduced the nicotine loss in those products when compared to products having higher pH values, such as those commonly employed in traditional smokeless tobacco products (e.g., in the range of about 7 to about 11, or preferably about 8 to about 10). In some embodiments, the citric acid may be used as a processing aid which is added to the composition or product to reduce nicotine loss during the production thereof. The use of citric acid in the products disclosed herein is not meant to be limiting and it should be noted that any buffering agent and/or pH adjuster may be suitable for altering the pH of the overall product. Such buffering agents and/or pH adjusters may be added singularly, or in the form of a combination of one or more compounds.
Additionally, various food-grade buffering agents are known and can be used to adjust the pH of the products as described herein. Suitable buffering agents may include those selected from the group consisting of acetates, glycinates, phosphates, glycerophosphates, citrates such as citrates of alkaline metals, carbonates, hydrogen carbonates, and borates, and mixtures thereof. In certain embodiments, the buffering agent is an amino acid, as taught for example, in US Pat. Pub. No. 2008/0286341 to Andersson et al. and PCT Appl. No. WO2008/040371 to Andersson et al., which are both incorporated herein by reference. As noted therein, various amino acids and salts thereof are useful for this purpose, including, but not limited to, arginine, asparagine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, serine, threonine, valine, cysteic acid, N-glycylglycine, and ornithine. In certain embodiments, N-glycylglycine or L-lysine is added as a buffering agent. In some embodiments, an amino acid buffering agent is used in combination with another amino acid buffering agent and/or in combination with one or more non-amino acid buffering agents. In certain embodiments, the optional pH adjusting agent is a base (e.g., NaOH). In certain embodiments, L-lysine and NaOH are added to the compositions of the present invention.
In certain embodiments, an emulsifier may be added. In certain embodiments, lecithin can be added to the composition to provide smoother textural properties of the composition and to improve flowability and mixing of the lipid with the remaining components of the composition. Lecithin can be used in an amount of about 0.01 to about 5% by dry weight of the composition, such as about 0.1 to about 2.5% or about 0.1 to about 1.0%.
In addition to the components provided in the lozenge compositions as noted above, such compositions may further comprise one or more additives. For example, lozenge compositions according to the present disclosure may further comprise one or more of a flavoring agent, one or more sweeteners, one or more additional binders, disintegration aids, humectants, salts, and mixtures thereof.
As used herein, a “flavorant” or “flavoring agent” is any flavorful or aromatic substance capable of altering the sensory characteristics associated with the oral products of the present disclosure. Example sensory characteristics that can be modified by the flavorant include, taste, mouthfeel, moistness, coolness/heat, and/or fragrance/aroma. Non-limiting examples of flavoring agents that may be included within the present compositions and/or products can include vanilla, coffee, chocolate/cocoa, cream, mint, spearmint, menthol, peppermint, wintergreen, eucalyptus, lavender, cardamom, nutmeg, cinnamon, clove, cascarilla, sandalwood, honey, jasmine, ginger, anise, sage, licorice, lemon, orange, apple, peach, lime, cherry, strawberry, trigeminal sensates, terpenes, and any combinations thereof. See also, Leffingwell et al., Tobacco Flavoring for Smoking Products, R. J. Reynolds Tobacco Company (1972), which is incorporated herein by reference. Flavoring agents may comprise components such as terpenes, terpenoids, aldehydes, ketones, esters, and the like. In some embodiments, the flavoring agent is a trigeminal sensate. As used herein, “trigeminal sensate” refers to a flavoring agent which has an effect on the trigeminal nerve, producing sensations including heating, cooling, tingling, and the like. Non-limiting examples of trigeminal sensate flavoring agents include capsaicin, citric acid, menthol, Sichuan buttons, erythritol, and cubebol. Flavorings also may include components that are considered moistening, cooling or smoothening agents, such as eucalyptus. These flavors may be provided neat (i.e., alone) or in a composite, and may be employed as concentrates or flavor packages (e.g., spearmint and menthol, orange and cinnamon; lime, pineapple, and the like). Representative types of components also are set forth in U.S. Pat. No. 5,387,416 to White et al.; US Pat. App. Pub. No. 2005/0244521 to Strickland et al.; and PCT Application Pub. No. WO 05/041699 to Quinter et al., each of which is incorporated herein by reference. In some instances, the flavoring agent may be provided in a spray-dried form or a liquid form. In certain embodiments, a flavorant can be utilized in an encapsulated form such as capsules having a rupturable outer wall (e.g., a wall comprising alginate or gelatin) with an internal payload that comprises the flavorant, or flavorants encapsulated within a matrix material, such as a sugar alcohol matrix.
The flavoring agent generally comprises at least one volatile flavor component. As used herein, “volatile” refers to a chemical substance that forms a vapor readily at ambient temperatures (i.e., a chemical substance that has a high vapor pressure at a given temperature relative to a nonvolatile substance). Typically, a volatile flavor component has a molecular weight below about 400 Da, and often include at least one carbon-carbon double bond, carbon-oxygen double bond, or both. In one embodiment, the at least one volatile flavor component comprises one or more alcohols, aldehydes, aromatic hydrocarbons, ketones, esters, terpenes, terpenoids, or a combination thereof. Non-limiting examples of aldehydes include vanillin, ethyl vanillin, p-anisaldehyde, hexanal, furfural, isovaleraldehyde, cuminaldehyde, benzaldehyde, and citronellal. Non-limiting examples of ketones include 1-hydroxy-2-propanone and 2-hydroxy-3-methyl-2-cyclopentenone-1-one. Non-limiting examples of esters include allyl hexanoate, ethyl heptanoate, ethyl hexanoate, isoamyl acetate, and 3-methylbutyl acetate. Non-limiting examples of terpenes include sabinene, limonene, gamma-terpinene, beta-farnesene, nerolidol, thuj one, myrcene, geraniol, nerol, citronellol, linalool, and eucalyptol. In one embodiment, the at least one volatile flavor component comprises one or more of ethyl vanillin, cinnamaldehyde, sabinene, limonene, gamma-terpinene, beta-farnesene, or citral. In one embodiment, the at least one volatile flavor component comprises ethyl vanillin. Flavorants are typically present in an amount of about 0.01 to about 10 weight percent, about 0.1 to about 5 weight percent, or about 0.5 to about 2 weight percent, based on the total weight of the composition.
Sweeteners can be used in natural or artificial form or as a combination of artificial and natural sweeteners. Examples of natural sweeteners include fructose, sucrose, glucose, maltose, mannose, galactose, lactose, isomaltulose, stevia, honey, and the like. Examples of artificial sweeteners include sucralose, maltodextrin, saccharin, aspartame, acesulfame K, neotame and the like. In one embodiment, sucrose and sucralose are primary sweetener ingredients. When present, a representative amount of sweetener, whether an artificial sweetener and/or natural sugar, may make up at least about 0.01 percent or at least about 0.03 percent, of the total weight of the composition. Typically, the amount of sweetener within the composition will not exceed about 20 percent, often will not exceed about 15 percent, and frequently will not exceed about 10 percent, of the total weight of the composition (e.g., about 0.1 to about 1 percent by weight).
Sucrose can be particularly advantageous in certain embodiments as an ingredient as it is believed to contribute to the chewing resistance or “bounce” of the final product. In addition, while granulated sucrose provides far less sweetening effect as compared to sucralose, the presence of sucrose can be advantageous as an additional filler component. When these two sweeteners are present together, the sucralose is typically present in an amount of at least about 0.25 weight percent, often at least about 0.5 weight percent, and most often at least about 1.0 weight percent (e.g., about 0.25 to about 2.0 weight percent), and the sucrose is typically present in an amount of at least about 2.0 weight percent, often at least about 3.0 weight percent, and most often at least about 4.0 weight percent (e.g., about 1.0 to about 6.0 weight percent). In further embodiments, sucralose is present in an amount of about 0.01 to about 0.5 weight percent (e.g., about 0.02 to about 0.1 weight percent).
A salt (e.g., sodium chloride, flour salt) may be employed in amounts sufficient to provide desired sensory attributes to the products of the present disclosure. Non-limiting examples of suitable salts include sodium chloride, potassium chloride, ammonium chloride, flour salt, and the like. When present, a representative amount of salt is at least about 0.5 weight percent or at least about 1.0 weight percent or at least about 1.5 weight percent, but will typically may make up less than about 5 percent of the total weight of the composition (e.g., about 0.5 to about 4 weight percent).
A humectant (e.g., glycerin) may be employed in amounts sufficient to provide desired moisture attributes to the oral products described herein. Further, in some instances, the humectant may impart desirable flow characteristics to the smokeless tobacco composition for depositing in a starch mold. When present, a representative amount of humectant is at least about 0.5 weight percent or at least about 1.0 weight percent or at least about 1.5 weight percent, but will typically make up less than about 5 percent of the total weight of the composition (e.g., about 0.5 to about 4 weight percent).
An additional binder (or combination of binders) may be employed in certain embodiments, in amounts sufficient to provide the desired physical attributes and physical integrity to the mixture, and binders also often function as thickening or gelling agents. Typical binders can be organic or inorganic, or a combination thereof. Representative binders include povidone, sodium alginate, starch-based binders, pectin, carrageenan, pullulan, zein, and the like, and combinations thereof. In some embodiments, the binder comprises pectin or carrageenan or combinations thereof. The amount of binder utilized in the composition can vary, but is typically up to about 30 weight percent, and certain embodiments are characterized by a binder content of at least about 0.1% by weight, such as about 1 to about 30% by weight, or about 5 to about 10% by weight, based on the total weight of the composition.
In some embodiments, the lozenge-type products described herein may include one or more colorants. A colorant may be employed in amounts sufficient to provide the desired physical attributes to the composition or product. Examples of colorants include various dyes and pigments, such as caramel coloring and titanium dioxide. The amount of colorant utilized in the compositions or products can vary, but when present is typically up to about 3 weight percent, such as from about 0.1%, about 0.5%, or about 1%, to about 3% by weight, based on the total weight of the composition.
Various other substances can be added to the compositions of the present invention. For example, excipients such as fillers or carriers for active ingredients (e.g., calcium polycarbophil, microcrystalline cellulose, hydroxypropylcellulose, sodium carboxymethylcellulose, cornstarch, silicon dioxide, calcium carbonate, lactose, and starches including potato starch, maize starch, etc.), thickeners, film formers and binders (e.g., hydroxypropyl cellulose, hydroxypropyl methylcellulose, acacia, sodium alginate, xanthan gum and gelatin), antiadherents (e.g., talc), glidants (e.g., colloidal silica), humectants (e.g., glycerin), preservatives and antioxidants (e.g., sodium benzoate and ascorbyl palmitate), surfactants (e.g., polysorbate 80), dyes or pigments (e.g., titanium dioxide or D&C Yellow No. 10), and lubricants or processing aids (e.g., calcium stearate or magnesium stearate) are added to the compositions in certain embodiments. Examples of even further types of additives that may be used in the present compositions and products include thickening or gelling agents (e.g., fish gelatin), emulsifiers, oral care additives (e.g., thyme oil, eucalyptus oil, and zinc), preservatives (e.g., potassium sorbate and the like), disintegration aids, zinc or magnesium salts selected to be relatively water soluble for compositions with greater water solubility (e.g., magnesium or zinc gluconate) or selected to be relatively water insoluble for compositions with reduced water solubility (e.g., magnesium or zinc oxide), or combinations thereof. See, for example, those representative components, combination of components, relative amounts of those components, and manners and methods for employing those components, set forth in U.S. Pat. No. 9,237,769 to Mua et al., U.S. Pat. No. 7,861,728 to Holton, Jr. et al., US Pat. App. Pub. No. 2010/0291245 to Gao et al., and US Pat. App. Pub. No. 2007/0062549 to Holton, Jr. et al., each of which is incorporated herein by reference. Typical inclusion ranges for such additional additives can vary depending on the nature and function of the additive and the intended effect on the final mixture, with an example range of up to about 10% by weight, based on total weight of the mixture (e.g., about 0.1 to about 5% by weight).
In some embodiments, the composition comprises a magnesium salt. A non-limiting example of a suitable magnesium salt is magnesium gluconate. In some embodiments, the composition comprises magnesium in an amount by weight from about 0.1% to about 2%, or from about 0.2 to about 1%, based on elemental magnesium.
The aforementioned types of additives can be employed together (e.g., as additive formulations) or separately (e.g., individual additive components can be added at different stages involved in the preparation of the final oral product). The relative amounts of the various components within the oral products may vary, and typically are selected so as to provide the desired sensory and performance characteristics to the oral product. Furthermore, the aforementioned types of additives may be encapsulated as provided in the final product or composition. Example encapsulated additives are described, for example, in WO 2010/132444 A2 to Atchley, which has been previously incorporated by reference herein.
The manner by which the various components of the lozenge compositions referenced above are combined may vary. The various components of those compositions may be contacted, combined, or mixed together in conical-type blenders, mixing drums, ribbon blenders, or the like, such as a Hobart mixer. As such, the overall mixture of various components with the active ingredient may be relatively uniform in nature. See also, for example, the types of methodologies set forth in U.S. Pat. No. 4,148,325 to Solomon et al.; U.S. Pat. No. 6,510,855 to Korte et al.; and U.S. Pat. No. 6,834,654 to Williams, each of which is incorporated herein by reference.
In order to improve the organoleptic properties of a composition as disclosed herein, the composition may include one or more taste modifying agents (“taste modifiers”) which may serve to mask, alter, block, or improve e.g., the flavor of a composition as described herein. Non-limiting examples of such taste modifiers include analgesic or anesthetic herbs, spices, and flavors which produce a perceived cooling (e.g., menthol, eucalyptus, mint), warming (e.g., cinnamon), or painful (e.g., capsaicin) sensation. Certain taste modifiers fall into more than one overlapping category.
In some embodiments, the taste modifier modifies one or more of bitter, sweet, salty, or sour tastes. In some embodiments, the taste modifier targets pain receptors. In some embodiments, the composition comprises an active ingredient having a bitter taste, and a taste modifier which masks or blocks the perception of the bitter taste. In some embodiments, the taste modifier is a substance which targets pain receptors (e.g., vanilloid receptors) in the user's mouth to mask e.g., a bitter taste of another component (e.g., an active ingredient). Suitable taste modifiers include, but are not limited to, capsaicin, gamma-amino butyric acid (GABA), adenosine monophosphate (AMP), lactisole, or a combination thereof.
When present, a representative amount of taste modifier is about 0.01% by weight or more, about 0.1% by weight or more, or about 1.0% by weight or more, but will typically make up less than about 10% by weight of the total weight of the composition, (e.g., from about 0.01%, about 0.05%, about 0.1%, or about 0.5%, to about 1%, about 5%, or about 10% by weight of the total weight of the composition).
Representative lozenge compositions and products may incorporate a basic amine (e.g., such as nicotine), an organic acid and/or and an alkali metal salt of an organic acid, about 0.01 to about 2 percent sweetener, at least about 80 percent of a first sugar substitute, about 0.1 to about 10 percent of a second sugar substitute, one or more flavorants in an amount of up to about 5 percent, and salt in an amount up to about 5 percent, based on the total weight of the product. The particular percentages and choice of ingredients will vary depending upon the desired flavor, texture, and other characteristics.
The manners and methods used to formulate and manufacture a lozenge product as described herein above can vary. For example, the compositions can be prepared via any method commonly used for the preparation of hard boiled confections. Example methods for the preparation of hard confections can be found, for example, in LFRA Ingredients Handbook, Sweeteners, Janet M. Dalzell, Ed., Leatherhead Food RA (December 1996), pp. 21-44, which is incorporated herein by reference.
Typically, a first mixture of ingredients is prepared. The composition of the first mixture of ingredients can vary; however, it typically comprises a sugar substitute and may contain various additional substances (e.g., the sugar alcohol syrup, NaCl, preservatives, further sweeteners, water, organic acids, and/or alkali metal salts of organic acids). In certain embodiments, it comprises the sugar substitute, sugar alcohol syrup, NaCl, water, and sodium benzoate. Typically, the first mixture of ingredients does not contain the active ingredient; although, it some embodiments, the active ingredient may be incorporated into the first mixture of ingredients.
The first mixture of ingredients is heated until it melts; subsequently, the mixture is heated to or past the hard crack stage. In confectionary making, the hard crack stage is defined as the temperature at which threads of the heated mixture (obtained by pulling a sample of cooled syrup between the thumb and forefinger) are brittle or as the temperature at which trying to mold the syrup results in cracking. According to the present method, the temperature at which the hard crack stage is achieved can vary, depending on the specific makeup of the product mixture but generally is between about 145° C. and about 170° C. Typically, the mixture is not heated above about 171° C., which is the temperature at which caramelization begins to occur. In the processes of the present disclosure, the mixture is typically heated to the hard crack stage temperature or above and then allowed to cool. The heating can be conducted at atmospheric pressure or under vacuum. Typically, the method of the present invention is conducted at atmospheric pressure.
In one example embodiment, the first mixture of ingredients comprises a high percentage of isomalt and the mixture is heated to about 143° C. Once all components are dissolved, the temperature is raised past the hard crack stage (e.g., to about 166° C.). The mixture is heated to this temperature and then removed from the heat to allow the mixture to cool.
In certain embodiments, the active ingredients (e.g., such as nicotine in various forms) and, optionally, additional components (e.g., additional sweeteners, fillers, flavorants, organic acids, basic amine-organic acid salts or ion pairs, and/or water) as described above are separately combined in a second mixture. The second mixture is added to the first mixture of ingredients, typically after the first mixture of ingredients has been removed from the heat. The addition of the second mixture may, in some embodiments, occur only after the heated first mixture of ingredients has cooled to a predetermined temperature (e.g., in certain embodiments, to about 132° C.). In certain embodiments, one or more flavorants are added to the second mixture immediately prior to adding the mixture to the first, heated mixture of ingredients. Certain flavorants are volatile and are thus preferably added after the mixture has cooled somewhat.
The combined mixture is then formed into the desired shape. In certain embodiments, the mixture is poured directly into molds, formed (e.g., rolled or pressed) into the desired shape, or extruded. If desired, the mixture can be extruded or injection molded. In certain embodiments, the mixture is formed or extruded into a mold of desired shape in an enclosed system, which may require decreased temperature and which may limit evaporation of certain mixture components. For example, such a system may limit the evaporation of volatile components including, but not limited to, flavorants.
Exemplary means for providing certain types of lozenge formulations are provided herein, although it is noted that other methods can be used without departing from the present invention. In some embodiments, the mixture can be extruded, starch molded, or injection molded. While certain processes further described herein reference use of a starch mold, it is noted that other types of molds may be used in the process, such as, for example, starchless molds, pectin molds, plastic tray molds, silicone tray molds, metallic tray molds, neoprene tray molds, and the like.
In some embodiments, oral products provided herein may be in the form of center-filled lozenges, for example, such that the interior of the lozenge has one or more different organoleptic properties (e.g., texture, mouthfeel, taste, etc.) from the outer surface thereof. Such center-filled lozenge formulations may include a liquid and/or a gel and/or a meltable and/or a chewable and/or a gummy and/or an effervescent center-filling that is surrounded by a hard outer shell typically associated with lozenge-type products as described herein. In such embodiments, the center-filling may be described as having less rigidity and/or increased softness compared to the outer shell. In some embodiments, the center-filling may or may not include an active ingredient therein. For example, in some embodiments, both the outer shell and the center-filling formulations may include an active ingredient so as to provide an extended release of the active ingredient therefrom. In some embodiments, at least the outer shell formulation includes a lozenge formulation as described herein above. In other embodiments, both the outer shell formulation and the center-filling formulation may comprise a lozenge formulation as described herein having similar or different organoleptic properties.
Center-filled lozenges as described herein may be prepared using various equipment and/or methods. In some embodiments, for example, a two-vat system may be used which includes two separate vats, a first vat containing the center-filling formulation and a second vat including the outer shell formulation. Typically, the center-filling formulation and the outer shell formulation may be heated such that they are in the form of a liquid, each of which may have the same or different viscosities. In such embodiments, a depositing tube may be connected to each vat and positioned to transfer the center-filling formulation and the outer shell formulation from their respective vats to a depositing nozzle for preparation of the center-filled lozenge. For example, the depositing nozzle may comprise two concentric cylinders configured to transfer each liquid formulation (e.g., the center-filling formulation and the outer shell formulation) separately into a mold where they are allowed to cool. In one or more embodiments, the desired center-filled formulation may be deposited via the center cylinder and the outer shell formulation may be deposited via the outer, concentric cylinder into the same mold and allowed to cool, forming a center-filled lozenge. Typically, the rate, timing, and/or quantity of each formulation transferred to the mold will determine the location and/or the quantity of the center-filling formulation and outer shell formulation in the final product. In some embodiments, the outer shell formulation may be pumped/ejected from the depositing nozzle first, followed by a quantity of the center-filling formulation, and lastly followed by a final amount of the outer shell formulation, for example, such that the outer shell formulation substantially surrounds the center-filling formulation in the mold prior to cooling. However, other configurations and methods are contemplated.
In certain embodiments, oral products provided herein may include two or more discrete portions. For example, as illustrated in
Other structured multilayered configurations as known in the art can also be used. As illustrated in
Various embodiments of the multicomponent oral product have a weight ratio of the first composition component to the second composition component of about a 1:10 to about a 10:1 ratio; or about a 1:5 to about a 5:1 ratio. In some embodiments, the weight ratio in about 1:3 to about 3:1 ratio.
The two or more discrete portions can be configured such that an exterior surface of the oral product includes each of the two or more discrete portions. In various embodiments of a multicomponent oral product described herein, the first composition component can form at least a portion of the exposed outer surface of the multicomponent oral product. In some embodiments, about 5% or greater, about 15% or greater, about 25% or greater, about 50% or greater, or about 75% or greater of the exposed multicomponent oral product surface can be defined by the first composition component. In some embodiments of a multicomponent oral product described herein, the second composition component can form at least a portion of the exposed outer surface of the multicomponent oral product. In some embodiments, about 5% or greater, about 15% or greater, about 25% or greater, about 50% or greater, or about 75% or greater of the exposed multicomponent oral product surface can be defined by the second composition component. In certain embodiments, the entire exposed surface of the multicomponent oral product can be defined by the second composition component.
In various embodiments, only one of the two or more discrete portions can include an active ingredient. For example, in certain embodiments, only the first composition component, which in certain embodiments can form the core component as described above, includes an active ingredient. In certain embodiments, only the second composition component, which in certain embodiments can form the sheath component as described above, includes an active ingredient. In some embodiments, each of the two or more discrete portions can include an active ingredient.
For example, in one embodiment a first section of the oral product is a first composition comprising nicotine in the form of an ion pair. Without intending to be limited by theory, it is believed the nicotine-containing section is dissolved early giving an initial release of nicotine. Optionally, the nicotine may also be deposited within the second section of the oral product comprising a second composition to influence the time release of the nicotine. The position and relative amounts of the core within the outer sheath portion may be adjusted to tailor the active ingredient (e.g., nicotine) release characteristics of the oral product. In certain embodiments, the two or more discrete portions can be provided with different colors and/or flavors.
In various embodiments, the multicomponent oral product can be formed by separately depositing each discrete portion into a mold (e.g., a metal mold or a starch mold). In certain embodiments, the inner core component can be deposited in the mold first, followed by the outer sheath component. In some embodiments, the outer sheath component can be deposited into the mold first, followed by depositing the inner core component into the middle of the sheath component with a depositor, as is known in the art. In various embodiments of a multi-layered oral product, each layer of discrete portions can be deposited separately.
Various other formats and configurations are likewise possible and intended to be encompassed by the present invention. In some embodiments, oral lozenge products as described herein may also include a one or more coating layers thereon. For example, a second and subsequent layer may be applied by means of a coating (e.g., by dip coating, spray coating, or preparing a separate sheet of the formulation that can be used to enwrap the core formulation or to adhere to one or more surface of the core formulation, as in a side-by-side type configuration). Depending on the nature of the lozenge formulation, the method of application may require modification of traditional spray coating techniques.
Typical conditions associated with manufacture of food grade lozenge products such as described herein include control of heat and temperature (i.e., the degree of heat to which the various ingredients are exposed during manufacture and the temperature of the manufacturing environment), moisture content (e.g., the degree of moisture present within individual ingredients and within the final composition), humidity within the manufacturing environment, atmospheric control (e.g., nitrogen atmosphere), airflow experienced by the various ingredients during the manufacturing process, and other similar types of factors. Additionally, various process steps involved in product manufacture can involve selection of certain solvents and processing aids, use of heat and radiation, refrigeration and cryogenic conditions, ingredient mixing rates, and the like. The manufacturing conditions also can be controlled due to selection of the form of various ingredients (e.g., solid, liquid, or gas), particle size or crystalline nature of ingredients of solid form, concentration of ingredients in liquid form, or the like. Ingredients can be processed into the desired composition by techniques such as extrusion, compression, spraying, and the like.
In certain embodiments, the lozenge product may be transparent or translucent. As used herein, “translucent” or “translucency” refers to materials allowing some level of light to travel therethrough diffusely. In certain embodiments, lozenge products of the present disclosure can have such a high degree of clarity that the material can be classified as “transparent” or exhibiting “transparency,” which is defined as a material allowing light to pass freely through without significant diffusion. The clarity of the lozenge product is such that there is some level of translucency as opposed to opacity (which refers to materials that are impenetrable by light). Transparency/translucency can be determined by any means commonly used in the art; however, it is commonly measured by spectrophotometric light transmission over a range of wavelengths (e.g., from about 400-700 nm). Alternatively, optical methods such as turbidimetry (or nephelometry) and colorimetry may be used to quantify the cloudiness (light scattering) and the color (light absorption), respectively, of the lozenge products provided herein. Translucency can also be confirmed by visual inspection by simply holding the material (e.g., extract) or product up to a light source and determining if light travels through the product in a diffuse manner.
The following examples are provided to illustrate further aspects associated with the present disclosure, but should not be construed as limiting the scope thereof. Unless otherwise noted, all parts and percentages are by dry weight.
An oral product in the form of a lozenge and configured for oral use is provided in the following manner.
An aqueous mixture is prepared. The aqueous mixture is formed by admixing water, a salt, a sugar substitute (e.g., isomalt), a sugar alcohol syrup (e.g., maltitol syrup), a sodium salt of an organic acid (e.g., sodium benzoate). Next, the aqueous mixture is heated to about until it melts (e.g., approximately 143° C.). Once all ingredients are dissolved in the aqueous mixture, it is further heated to the hard crack stage (e.g., approximately 166° C.) and then removed from the heat and allowed to cool to about 132° C.
A second mixture is prepared including a sweetener, a flavoring agent, and a solution containing a basic amine (e.g., nicotine) that is at least partially associated with an organic acid (e.g., benzoic acid). In particular, the solution contains nicotine, benzoic acid, nicotine benzoate, and water. The amount of nicotine in the solution is about 12% by weight based on the total weight of the solution. After the first mixture is allowed to cool, the second mixture is then added to the first mixture and stirred in a Hobart mixing bowl to form a lozenge composition.
The lozenge composition is then deposited into a starch mold for about 24 hours at about 60° C. The lozenge composition is then allowed to cool and then removed from the starch mold. Table 2 below illustrates the relative percentages of each individual component in the final oral product prepared as described herein.
80%-98%
A multicomponent oral product in the form of a lozenge and configured for oral use is provided in the following manner.
An aqueous mixture is prepared. The aqueous mixture is formed by admixing water, a salt, sucralose, a sugar substitute (e.g., isomalt), and a sugar alcohol syrup (e.g., maltitol syrup). Next, the aqueous mixture is heated to about until it melts (e.g., approximately 143° C.). Once all ingredients are dissolved in the aqueous mixture, it is further heated to the hard crack stage (e.g., approximately 160° C.) and then removed from the heat and allowed to cool to about 140° C. The aqueous mixture is divided into two separate portions (Portion A and Portion B), or alternatively, two separate aqueous mixtures are prepared (Portion A and Portion B). It is noted that the water is substantially boiled off during the heating.
A second mixture is prepared including a flavoring agent, and a solution containing a basic amine (e.g., nicotine) that is at least partially associated with an organic acid (e.g., benzoic acid). In particular, the solution contains nicotine, benzoic acid, nicotine benzoate, and water. The amount of nicotine in the solution is about 12% by weight based on the total weight of the solution. Optionally, a coloring agent can be added to the second mixture.
The second mixture is then added to Portion A of the aqueous mixture and mixed by hand with a spatula to form Composition A for use in the multicomponent lozenge product. Composition A is then allowed to cool to about 140° C. (as noted above). Table 3 below illustrates the relative percentages of each individual component in Composition A for use in the multicomponent lozenge product.
80%-98%
Additionally, a flavoring agent and optionally, a coloring agent, is then added to Portion B of the aqueous mixture and mixed by hand with a spatula to form a Composition B for use in the multicomponent lozenge product. Composition B is then allowed to cool to about 140° C. (as noted above). Table 4 below illustrates the relative percentages of each individual component in Composition B for use in the multicomponent lozenge product.
85%-98%
About 0.3 g of the lozenge Composition A is then deposited into a metal mold using a Field Research Experimental Depositor (FRED). About 1.7 g of the lozenge Composition B is deposited into the same metal mold Composition A was deposited into. The weight ratio of Composition A to Composition B in the multicomponent lozenge product is in the range of about 1:1 to about 1:10. It is further noted that depending on the desired configuration of the final product, Composition A or B can be deposited first. For example, in certain embodiments, Composition B is deposited into the metal mold first, and then Composition A is deposited in the center of deposited Composition B. After depositing both compositions, the multicomponent lozenge is allowed to cool to the point of solidification and then removed from the mold. It is further noted that starch molds can be used in place of starchless or metal molds. Once removed, the multicomponent lozenge can optionally be coated with an anti-stick coating such as CAPOL® coating material.
A multicomponent oral product in the form of a lozenge and configured for oral use is provided in the following manner.
An aqueous mixture is prepared. The aqueous mixture is formed by admixing water, a salt, sucralose, a sugar substitute (e.g., isomalt), and a sugar alcohol syrup (e.g., maltitol syrup). Next, the aqueous mixture is heated to about until it melts (e.g., approximately 143° C.). Once all ingredients are dissolved in the aqueous mixture, it is further heated to the hard crack stage (e.g., approximately 160° C.) and then removed from the heat and allowed to cool to about 140° C. The aqueous mixture is divided into two separate portions (Portion A and Portion B), or alternatively, two separate aqueous mixtures are prepared (Portion A and Portion B). It is noted that the water is substantially boiled off during the heating.
A second mixture is prepared including a flavoring agent, and a solution containing a basic amine (e.g., nicotine) that is at least partially associated with an organic acid (e.g., benzoic acid). In particular, the solution contains nicotine, benzoic acid, nicotine benzoate, and water. The amount of nicotine in the solution is about 12% by weight based on the total weight of the solution. Optionally, a coloring agent can be added to the second mixture.
The second mixture is then added to Portion A of the aqueous mixture and mixed by hand with a spatula to form a Composition A for use in the multicomponent lozenge product. Composition A is then allowed to cool to about 140° C. (as noted above). Table 3 below illustrates the relative percentages of each individual component in Composition A for use in the multicomponent lozenge product.
80%-98%
Additionally, a flavoring agent and optionally, a coloring agent, is then added to Portion B of the aqueous mixture and mixed by hand with a spatula to form a Composition B for use in the multicomponent lozenge product. Composition B is then allowed to cool to about 140° C. (as noted above). Table 4 below illustrates the relative percentages of each individual component in Composition B for use in the multicomponent lozenge product.
85%-98%
About 0.3 g of the lozenge Composition A is then deposited into a metal mold using a Field Research Experimental Depositor (FRED). About 1.7 g of the lozenge Composition B is deposited into the same metal mold Composition A was deposited into. The weight ratio of Composition A to Composition B in the multicomponent lozenge product is in the range of about 1:1 to about 1:10. It is further noted that depending on the desired configuration of the final product, Composition A or B can be deposited first. For example, in certain embodiments, Composition B is deposited into the metal mold first, and then Composition A is deposited in the center of deposited Composition B. After depositing both compositions, the multicomponent lozenge is allowed to cool to the point of solidification and then removed from the mold. It is further noted that starch molds can be used in place of starchless or metal molds. Once removed, the multicomponent lozenge can optionally be coated with an anti-stick coating such as CAPOL® coating material.
Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing description. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
The present application claims priority to and the benefit of U.S. Provisional Application No. 63/250,858 filed Sep. 30, 2021, and U.S. Provisional Application No. 63/178,276 filed Apr. 22, 2021, the disclosures of which are incorporated herein by reference in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| 63250858 | Sep 2021 | US | |
| 63178276 | Apr 2021 | US |
