Patent Application
20230340378
This application contains a Sequence Listing in computer readable form. The computer readable form is incorporated herein by reference.
The present application relates to detergent compositions, particularly for laundry, and methods of cleaning comprising alginate lyase enzymes and hexosaminidase enzymes. The application also relates to methods of washing and methods of making laundry detergent compositions.
In cleaning applications, particularly for laundry, degradation of whiteness over time and soil or stain removal are continuing problems. There are many cleaning technologies aimed at mitigating such problems however, it is a constant challenge to provide improved efficacy and especially in an environmentally favourable manner. In automatic washing machines these problems are compounded by the increased use of low wash temperatures (e.g., cold water) and shorter washing cycles which reduce stain/soil removal efficacy of detergent compositions and exacerbate problems of redeposition of soil onto fabric surfaces during the washing process and whiteness loss over multiple washes.
Thus, it is an object of the present invention to provide a detergent composition, particularly for laundry which can be used in a washing process, even at low temperatures and short wash times, which will counteract whiteness degradation and/or remove complex soils, for example to enable dingy soil removal, deep cleaning, removing yellowness, in particular cleaning collars and cuffs and/or whiteness improvement/counteracting whiteness loss, and that can even be useful at low temperatures and short wash times.
The present application provides, for example, a detergent composition, particularly for laundry, comprising from 0.00005 to 5 wt% alginate lyase enzyme (active enzyme protein), 0.00005 wt% to 5 wt% hexosaminidase enzyme (active enzyme protein) and from 1 to 60 wt% anionic surfactant.
The application also provides a method of treating a fabric, the method comprising contacting a fabric with an aqueous wash liquor comprising an alginate lyase enzyme; a hexosaminidase enzyme; and an anionic surfactant.
Preferably the aqueous wash liquor comprises anionic surfactant in an amount from 0.05 g/1 to 5 g/l, preferably from 0.01 g/l to 3 g/l.
Preferably the fabric is contacted with the aqueous wash liquor at a temperature of 60° C. or less, or more preferably at a temperature of 40° C. or less or 35° C. or less, most preferably at a temperature of 30° C. or less or even 25° C. or less; and (iii) rinsing the surface. The compositions and methods herein are particularly useful for treating any surface, synthetic or natural, including cotton, wool, silk, polyester, nylon, elastane or mixed fabric, such as polycotton.
The application also relates to the use of a composition or method as described above for: improving whiteness of a fabric or counteracting whiteness loss; improved soil removal from a fabric; dingy soil removal; deep cleaning; removing or mitigating yellowness; cleaning collars and/or cuffs; malodour reduction or removal from a fabric; anti-wrinkle benefits on a fabric; improved drying of a fabric; soil antiredeposition benefits.
Parent or Parent enzyme: The term “parent” or “parent enzyme” means an enzyme to which an alteration is made to produce the enzyme variants. The parent may be a naturally occurring (wild-type) polypeptide or a variant thereof. For example, the alginate lyase parent may be any of SEQ ID Nos: 1, 2, 3, 4, 5, 6 or 7 listed herein.
Sequence Identity: The relatedness between two amino acid sequences or between two nucleotide sequences is described by the parameter “sequence identity”. For purposes of the present invention, the degree of sequence identity between two amino acid sequences is determined using the Needleman-Wunsch algorithm (Needleman and Wunsch, 1970, J. Mol. Biol. 48: 443-453) as implemented in the Needle program of the EMBOSS package (EMBOSS: The European Molecular Biology Open Software Suite, Rice et al., 2000, Trends Genet. 16: 276-277), preferably version 3.0.0 or later. The optional parameters used are gap open penalty of 10, gap extension penalty of 0.5, and the EBLOSUM62 (EMBOSS version of BLOSUM62) substitution matrix. The output of Needle labeled “longest identity” (obtained using the -nobrief option) is used as the percent identity and is calculated as follows:
Alternatively, the parameters used may be gap open penalty of 10, gap extension penalty of 0.5, and the EDNAFULL (EMBOSS version of NCBI NUC4.4) substitution matrix. The output of Needle labeled “longest identity” (obtained using the -nobrief option) is used as the percent identity and is calculated as follows:
Variant: The term “variant” means a polypeptide having enzyme activity comprising an alteration/mutation, i.e., a substitution, insertion, and/or deletion, at one or more (e.g. several) positions relative to the parent. A substitution means a replacement of an amino acid occupying a position with a different amino acid; a deletion means removal of an amino acid occupying a position; and an insertion means adding 1-3 amino acids adjacent to and immediately following an amino acid occupying a position.
Wild-Type Enzyme: The term “wild-type” enzyme means an enzyme expressed by a naturally occurring microorganism, such as a bacterium, algae, yeast, or filamentous fungus found in nature.
The alginate lyase is preferably microbial in origin, preferably bacterial or algal (for example from brown seaweed (Phaeophyceae), such as Ascophyllum, Laminara, Macrocystis), most preferably bacterial. The alginate lyase enzyme may be obtained from Aeromonas sp., Azotobacter sp., Bacillus sp., Flavobacterium sp., Klebsiella sp., Pseudomonas sp., Sphingomonas sp., Vibrio sp., Zobellia galactanivorans, most preferably Flavobacterium sp.
Preferably the alginate lyase enzyme comprises alginate lyase selected from: alginate lyase having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 1; alginate lyase having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 2; alginate lyase having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 3; alginate lyase having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 4; alginate lyase having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 5; alginate lyase having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 6; alginate lyase having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 7; or mixtures thereof. Preferred alginate lyase enzyme comprises alginate lyase enzyme corresponding to the wild-type or preferably a variant of the wild-type of any one of SEQ ID NOs: 1, 2, 3, 4, 5, 6 or 7 listed herein, or mixtures thereof. SEQ ID NOs 6 and 7 and variants thereof, and mixtures thereof are particularly preferred.
When the alginate lyase enzyme is a variant of a parent amino acid sequence, the parent alginate lyase enzyme preferably has a sequence identity to the polypeptide of one or more of SEQ ID NOs: 1, 2, 3, 4, 5, 6 or 7 of at least 50% or at least 60%, or at least 70% or at least 80%, such as at least 85%, at least 90%, e.g. at least 92%, at least 93%, at least 94%, at least 95%, at least 96%, at least 97%, at least 98%, at least 99, or 100%, which has alginate lyase enzyme activity. It may be preferred for the variant amino acid sequence to differ from the parent alginate lyase by no more than fifteen, or no more than ten amino acids, or no more than five, or four or three or two or one amino acid(s) from the polypeptide of one or more of SEQ ID NOs: 1, 2, 3, 4, 5, 6 or 7.
When the alginate lyase enzyme is a variant of a parent amino acid sequence, the parent may be obtained from a microorganisms of any genus. For purposes of the present invention, the term “obtained from” as used herein in connection with a given source shall mean that the parent encoded by a polynucleotide is produced by the source or by a cell in which the polynucleotide from the source has been inserted. In one aspect, the parent is secreted extracellularly. Variants may be prepared using any mutagenesis procedure known in the art, such as site-directed mutagenesis, synthetic gene construction, semi-synthetic gene construction, random mutagenesis, shuffling, etc.
The alginate lyase may be from any polysaccharide lyase (PL) family including PL5, PL6, PL7, PL14, PL15, PL17, PL18, PL32, PL34, and PL36. Preferably the alginate lyase is from PL family 7.
Preferably the alginate lyase enzyme has activity towards poly(beta-D-mannuronate) (polyM activity) and activity towards poly(alpha-L-guluronate) (polyG activity). The alginate lyase enzyme may comprise a single alginate lyase enzyme to provide the polyM activity and polyG activity or may comprise two or more alginate lyase enzymes which in combination provide the polyM and polyG activity. Preferably, the alginate lyase comprises an enzyme having both polyM activity and polyG activity. Preferably the polyM activity as defined in the test section herein, is at least 0.1 absorbance units, preferably at least 0.15 absorbance units and most preferably at least 2 absorbance units. Preferably the polyG activity as defined herein is at least 0.3 absorbance units, preferably at least 0.4 absorbance units, or at least 0.5 or even at least 0.6 absorbance units. PolyM activity and polyG activity may be measured according to the tests set out below. The alginate lyase enzyme may be incorporated into the cleaning compositions and methods of the invention in the form of a substantially pure enzyme. Alternatively, in particular where the enzyme is a variant of a wild-type enzyme, the variant is not recovered, but rather a host cell expressing the enzyme is used as the source of the alginate lyase enzyme.
The alginate lyase enzyme may be in the form of a liquid or a dry composition. For instance, the composition may be in the form of a granulate or a microgranulate. The alginate lyase enzyme may be stabilized including by encapsulation, in accordance with methods known in the art.
The alginate lyase enzyme is present in the composition in an amount from 0.00005 to 5 wt% active enzyme protein, preferably from 0.0001 to 2 wt% active protein or from 0.0005 or from 0.001 to 1 wt% active protein, or to 0.5 wt% or to 0.1 wt% or to 0.05 wt% active enzyme protein.
Preferably the alginate lyase enzyme is present in the aqueous wash liquor in an amount of from 0.01 ppm to 1000 ppm of the enzyme, or from 0.05 or from 0.1 ppm to 750 or 500 ppm.
The composition comprises one or more hexosaminidase enzymes. The term hexosaminidase includes “dispersin” and the abbreviation “Dsp”, which means a polypeptide having hexosaminidase activity. Suitable enzymes are found in EC 3.2.1.- that catalyze the hydrolysis of β-1,6-glycosidic linkages of N-acetyl-glucosamine polymers found in soils of microbial origin. The term hexosaminidase includes polypeptides having N-acetylglucosaminidase activity and β-N-acetylglucosaminidase activity. Hexosaminidase activity may be determined according to Assay II described in WO2018184873. Suitable hexosaminidases include those disclosed in WO2017186936, WO2017186937, WO2017186943, WO2017207770, WO2018184873, WO2019086520, WO2019086528, WO2019086530, WO2019086532, WO2019086521, WO2019086526, WO2020002604, WO2020002608, WO2020007863, WO2020007875, WO2020008024, WO2020070063, WO2020070249, WO2020088957, WO2020088958 and WO2020207944. Variants of the Terribacillus saccharophilus hexosaminidase defined by SEQ ID NO: 1 of WO2020207944 are preferred, especially the variants with improved thermostability disclosed in that publication.
Particularly preferred hexosaminidase enzymes are hexosaminidase enzymes having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 8; and hexosaminidase enzymes having at least 60%, or at least 70%, or at least 75%, or at least 80%, or at least 85%, or at least 90%, or at least 95%, or at least 96%, or at least 97%, or at least 98%, or at least 99%, or 100%, sequence identity to SEQ ID NO: 9 herein; and mixtures thereof.
The present inventors have found that the enzyme combination provides good soil breakdown, however the removal of the products of the breakdown of the substrates and soils containing them is improved by the presence of anionic surfactant. Therefore, the laundry detergent composition comprises from 1 to 60 wt% an anionic surfactant. Preferably the weight ratio of anionic surfactant to active alginate lyase enzyme protein is at least 500:1, preferably at least 1000:1 or at least 1500:1 or at least 2000:1, preferably being no greater than 500000:1, preferably no greater than 400000:1, or no greater than 200000:1 or up to 150000:1 or 100000:1, or 50000:1 or 10000:1. Preferably the weight ratio of anionic surfactant to active hexosaminidase enzyme protein is at least 500:1, preferably at least 1000:1 or at least 1500:1 or at least 2000:1, preferably being no greater than 500000:1, preferably no greater than 400000:1, or no greater than 200000:1 or up to 150000:1 or 100000:1, or 50000:1 or 10000: 1.
Preferred anionic surfactants are sulfonate and sulfate surfactants, preferably alkylbenzene sulphonates and/or (optionally alkoxylated) alkyl sulfates. Particularly preferred anionic surfactant comprises linear alkylbenzene sulfonates (LAS). Preferred alkyl sulfates comprise alkyl ether sulfates, especially C-9-15 alcohol ether sulfates, especially those having an average degree of ethoxylation from 0.5 to 7, preferably from 1 to 5, C8-C16 ester sulfates and C10-C14 ester sulfates, such as mono dodecyl ester sulfates. In a preferred composition the anionic surfactant comprises alkyl benzene sulphonate and optionally in addition, optionally ethoxylated alkyl sulfate, preferably having a degree of ethoxylation from 0 to 7, more preferably from 0.5 to 3. Isomers of LAS, branched alkylbenzenesulfonates (BABS), phenylalkanesulfonates, alpha-olefinsulfonates (AOS), olefin sulfonates, alkene sulfonates, alkane-2,3-diylbis(sulfates), hydroxyalkanesulfonates and disulfonates, alkyl sulfates (AS) such as sodium dodecyl sulfate (SDS), fatty alcohol sulfates (FAS), primary alcohol sulfates (PAS), alcohol ether sulfates (AES or AEOS or FES, also known as alcohol ethoxy sulfates or fatty alcohol ether sulfates), secondary alkanesulfonates (SAS), paraffin sulfonates (PS), ester sulfonates, sulfonated fatty acid glycerol esters, alpha-sulfo fatty acid methyl esters (alpha-SFMe or SES) including methyl ester sulfonate (MES), alkyl- or alkenylsuccinic acid, dodecenyl/tetradecenyl succinic acid (DTSA), fatty acid derivatives of amino acids, diesters and monoesters of sulfo-succinic acid or salt of fatty acids (soap), and combinations thereof are also suitable anionic surfactants.
The anionic surfactant is preferably added to the detergent composition in the form of a salt. Preferred cations are alkali metal ions, such as sodium and potassium. However, the salt form of the anionic surfactant may be formed in situ by neutralization of the acid form of the surfactant with alkali such as sodium hydroxide or an amine, such as mono-, di-, or tri-ethanolamine. The composition preferably comprises from 1 to 60 weight% or from 1 to 50 wt% or 2 or 5 to 40 wt% of the composition, anionic surfactant. The surfactant preferably comprises a surfactant system comprising an anionic surfactant and in addition, one or more additional surfactants, which may be non-ionic including semi-polar and/or cationic and/or zwitterionic and/or ampholytic and/or amphoteric and/or semi-polar nonionic and/or mixtures thereof.
The invention also provides a cleaning composition comprising: from 0.00005 to 5 wt% (active enzyme protein) of an alginate lyase enzyme; 0.00005 to 5 wt% hexosaminidase enzyme (active enzyme protein) and a surfactant wherein the surfactant comprises an anionic and a nonionic surfactant, preferably having a weight ratio of anionic to nonionic of from 30:1 to 1:2, preferably from 20:1 to 2:3 or to 1:1.
Suitable nonionic surfactants include alcohol ethoxylates (AE), alcohol propoxylates, propoxylated fatty alcohols (PFA), alkoxylated fatty acid alkyl esters, such as ethoxylated and/or propoxylated fatty acid alkyl esters, alkylphenol ethoxylates (APE), nonylphenol ethoxylates (NPE), alkylpolyglycosides (APG), alkoxylated amines, fatty acid monoethanolamides (FAM), fatty acid diethanolamides (FADA), ethoxylated fatty acid monoethanolamides (EFAM), propoxylated fatty acid monoethanolamides (PFAM), polyhydroxyalkyl fatty acid amides, or N-acyl N-alkyl derivatives of glucosamine (glucamides, GA, or fatty acid glucamides, FAGA), as well as products available under the trade names SPAN and TWEEN, and combinations thereof. Alcohol ethoxylates are particularly preferred, preferably having a C9-18 or preferably a C12-15 alkyl chain and preferably having an average degree of ethoxylation from 3 to 9, more preferably from 3 to 7. Commercially available nonionic surfactants cleaning include Plurafac ™, Lutensol™ and Pluronic™ from BASF, Dehypon™ series from Cognis and Genapol™ series from Clariant.
The detergent composition preferably comprises from 0.5 wt% to about 40 wt% of a non-ionic surfactant, preferably 1 to 30 wt% of the composition non-ionic surfactant.
The detergent composition of the present invention is preferably a laundry detergent. The composition may be in the form of a composition for use in a main wash step or as pre-treatment or rinse-added cleaning composition for consumer or institutional use.
The composition comprises optional cleaning adjunct. Typically the cleaning adjunct will be present in the composition in an amount from 1 to 98.9 wt%, more typically from 5 to 90 wt% cleaning adjunct. Suitable cleaning adjuncts comprise: additional surfactants, builders, bleach ingredients, colorants, chelating agents, dye transfer agents, deposition aids, dispersants, additional enzymes, and enzyme stabilizers, catalytic materials, optical brighteners, photoactivators, fluorescers, fabric hueing agents (shading dyes), fabric conditioners, preformed peracids, polymeric dispersing agents, clay soil removal/anti-redeposition agents, filler salts, hydrotropes, brighteners, suds suppressors, structure elasticizing agents, fabric softeners, preservatives, anti-oxidants, anti-shrinkage agents, germicides, fungicides, anti-tarnish, anti-corrosion agents, alkalinity sources, solubilizing agents, carriers, processing aids, pigments, dyes, perfumes and pH control agents, encapsulates, polymers and mixtures thereof. For example, these may include: bleach ingredients such as bleach activators, bleach boosters such as imine bleach boosters, bleach catalysts, hydrogen peroxide, sources of hydrogen peroxide such as percarbonate and/or perborate, especially percarbonate coated with material such as carbonate and/or sulphate salt, silicate salt, borosilicate, and any mixture thereof, pre-formed peracid, including pre-formed peracid in encapsulated form, transition metal catalysts; suds suppressors or suppressor systems such as silicone based suds suppressors and/or fatty acid based suds suppressors; fabric-softeners such as clay, silicone and/or quaternary ammonium compounds; flocculants such as polyethylene oxide; dye transfer inhibitors such as polyvinylpyrrolidone, poly 4-vinylpyridine N-oxide and/or co-polymer of vinylpyrrolidone and vinylimidazole; fabric integrity components such as oligomers produced by the condensation of imidazole and epichlorhydrin; soil dispersants and soil anti-redeposition aids such as alkoxylated polyamines and ethoxylated ethyleneimine polymers; anti-redeposition components such as polyesters; carboxylate polymers such as maleic acid polymers or co-polymers of maleic and acrylic acid; perfumes such as perfume microcapsules, starch encapsulated accords, perfume spray-on; soap rings; aesthetic particles; aesthetic dyes; fillers such as sodium sulphate and/or citrus fibres, although it may be preferred for the composition to be substantially free of fillers; silicate salt such as sodium silicate, including 1.6R and 2.0R sodium silicate, or sodium metasilicate; co-polyesters of di-carboxylic acids and diols; cellulosic polymers such as methyl cellulose, carboxymethyl cellulose, hydroxyethoxycellulose, or other alkyl or alkylalkoxy cellulose; solvents such as 1,2 propanediol, monoethanolamine; diethylene glycol, ethanol, and any mixture thereof; hydrotropes such as sodium cumene sulphonate, sodium xylene sulphonate, sodium toluene sulphonate, and any mixtures; organic acids and salts thereof, such as citric acid/citrate salts; and any combination thereof. The composition may be such that the cleaning adjunct comprises one or more selected from the group consisting of (i) perfume microcapsule; (ii) fabric hueing agent; (iii) protease; (iv) amphiphilic cleaning polymer; (v) lipase, or (vi) mixtures thereof.
The detergent composition preferably comprises one or more additional enzymes. Therefore a preferred composition comprises (a) alginate lyase, (b) hexosaminidase, and (c) one or more additional enzymes selected from the group consisting of aminopeptidase, amylase, carbohydrase, carboxypeptidase, catalase, cellulase, chitinase, cutinase, cyclodextrin glycosyltransferase, esterase, alpha-galactosidase, beta-galactosidase, glucoamylase, alpha-glucosidase, beta-glucosidase, haloperoxidase, invertase, laccase, lipase, mannanase, mannosidase, nuclease, oxidase, pectinolytic enzyme, peptidoglutaminase, peroxidase, phytase, polyphenoloxidase, proteolytic enzyme, transglutaminase, xylanase, xanthan lyase, xanthanase, endo -β-1,3-glucanase and mixtures thereof. Preferably the cleaning composition comprises additional enzyme selected from nuclease, such as DNase or RNase, mannanase, xanthan lyase, xanthanase, amylase and mixtures thereof.
Preferably the composition comprises additional enzymes selected from xanthan lyase, xanthanase, mannanase and mixtures thereof. Mannanase is particularly preferred.
The additional enzyme(s) may be produced, for example, by a microorganism belonging to the genus Aspergillus, e.g., Aspergillus aculeatus, Aspergillus awamori, Aspergillus foetidus, Aspergillus fumigatus, Aspergillus japonicus, Aspergillus nidulans, Aspergillus niger, or Aspergillus oryzae; Fusarium, e.g., Fusarium bactridioides, Fusarium cerealis, Fusarium crookwellense, Fusarium culmorum, Fusarium graminearum, Fusarium graminum, Fusarium heterosporum, Fusarium negundi, Fusarium oxysporum, Fusarium reticulatum, Fusarium roseum, Fusarium sambucinum, Fusarium sarcochroum, Fusarium sulphureum,Fusarium toruloseum, Fusarium trichothecioides, or Fusarium venenatum; Humicola, e.g., Humicola insolens or Humicola lanuginosa; or Trichoderma, e.g., Trichoderma harzianum, Trichoderma koningii, Trichoderma longibrachiatum, Trichoderma reesei, or Trichoderma viride.
Preferably the composition comprises a protease or mixture of more than one protease, a lipase or mixture of more than one lipase, a peroxidase or mixture of more than one peroxidase, one or more amylolytic enzymes, e.g., an alpha-amylase, glucoamylase, maltogenic amylase, and/or a cellulase or mixture thereof.
In general, the properties of the chosen enzyme(s) should be compatible with the selected detergent, (i.e., pH-optimum, compatibility with other enzymatic and non-enzymatic ingredients, etc.), and the enzyme(s) should be present in effective amounts. Preferably, the product of the invention comprises at least 0.01 mg, preferably from about 0.05 to about 10, more preferably from about 0.1 to about 6, especially from about 0.2 to about 5 mg of active further enzyme/ g of composition.
Proteases: The composition of the invention preferably comprises a protease. A mixture of two or more proteases can contribute to an enhanced cleaning across a broader temperature, cycle duration, and/or substrate range. Suitable proteases include metalloproteases and serine proteases, including neutral or alkaline microbial serine proteases, such as subtilisins (EC 3.4.21.62). Suitable proteases include those of animal, vegetable or microbial origin. In one aspect, such suitable protease may be of microbial origin. The suitable proteases include chemically or genetically modified mutants of the aforementioned suitable proteases. In one aspect, the suitable protease may be a serine protease, such as an alkaline microbial protease or/and a trypsin-type protease. Examples of suitable neutral or alkaline proteases include:
subtilisins (EC 3.4.21.62), especially those derived from Bacillus, such as Bacillus sp., B. lentus, B. alkalophilus, B. subtilis, B. amyloliquefaciens, B. pumilus, B. gibsonii, and B. akibaii described in WO2004067737, WO2015091989, WO2015091990, WO2015024739, WO2015143360, US 6,312,936 B1, US 5,679,630, US 4,760,025, DE102006022216A1, DE102006022224A1, WO2015089447, WO2015089441, WO2016066756, WO2016066757, WO2016069557, WO2016069563, WO2016069569 and WO2016174234. Specifically, mutations S9R, A15T, V66A, A188P, V199I, Q239R, N255D (savinase numbering system).
trypsin-type or chymotrypsin-type proteases, such as trypsin (e.g., of porcine or bovine origin), including the Fusarium protease described in WO 89/06270 and the chymotrypsin proteases derived from Cellumonas described in WO 05/052161 and WO 05/052146.
metalloproteases, especially those derived from Bacillus amyloliquefaciens decribed in WO07/044993A2; from Bacillus, Brevibacillus, Thermoactinomyces, Geobacillus, Paenibacillus, Lysinibacillus or Streptomyces spp. described in WO2014194032, WO2014194054 and WO2014194117; from Kribella alluminosa described in WO2015193488; and from Streptomyces and Lysobacter described in WO2016075078.
protease having at least 90% identity to the subtilase from Bacillus sp. TY145, NCIMB 40339, described in WO92/17577 (Novozymes A/S), including the variants of this Bacillus sp TY145 subtilase described in WO2015024739, and WO2016066757.
Especially preferred proteases for the cleaning composition of the invention are polypeptides having at least 90%, preferably at least 95%, more preferably at least 98%, even more preferably at least 99% and especially 100% identity with the wild-type enzyme from Bacillus lentus, comprising mutations in one or more, preferably two or more and more preferably three or more of the following positions, using the BPN′ numbering system and amino acid abbreviations as illustrated in WO00/37627, which is incorporated herein by reference: S9R, A15T, V68A, N76D, N87S, S99D, S99SD, S99A, S101G, S101M, S103A, V104N/I, G118V, G118R, S128L, P129Q, S130A, Y167A, R170S, A194P, V205I, Q206L/D/E, Y209W, M222S, Q245R and/or M222S.
Most preferably the protease is selected from the group of proteases comprising the below mutations (BPN′ numbering system) versus either the PB92 wild-type (SEQ ID NO:2 in WO 08/010925) or the subtilisin 309 wild-type (sequence as per PB92 backbone, except comprising a natural variation of N87S).
Suitable commercially available protease enzymes include those sold under the trade names Alcalase®, Savinase®, Primase®, Durazym®, Polarzyme®, Kannase®, Liquanase®, Liquanase Ultra®, Savinase Ultra®, Ovozyme®, Neutrase®, Everlase®, Coronase®, Blaze®, Blaze Ultra® and Esperase® by Novozymes A/S (Denmark); those sold under the tradename Maxatase®, Maxacal®, Maxapem®, Properase®, Purafect®, Purafect Prime®, Purafect Ox®, FN3@, FN4®, Excellase®, Ultimase® and Purafect OXP® by Dupont; those sold under the tradename Opticlean® and Optimase® by Solvay Enzymes; and those available from Henkel/Kemira, namely BLAP (sequence shown in Figure 29 of US 5,352,604 with the following mutations S99D + S101 R + S103A + V104I + G159S, hereinafter referred to as BLAP), BLAP R (BLAP with S3T + V4I + V199M + V205I + L217D), BLAP X (BLAP with S3T + V4I + V205I) and BLAP F49 (BLAP with S3T + V4I + A194P + V199M + V205I + L217D); and KAP (Bacillus alkalophilus subtilisin with mutations A230V + S256G + S259N) from Kao.
Especially preferred for use herein are commercial proteases selected from the group consisting of Properase®, Blaze®, Ultimase®, Everlase®, Savinase®, Excellase®, Blaze Ultra®, BLAP and BLAP variants.
Preferred levels of protease in the product of the invention include from about 0.05 to about 10, more preferably from about 0.5 to about 7 and especially from about 1 to about 6 mg of active protease/g of composition.
Lipases: The composition preferably comprises a lipase. The presence of oils and/or grease can further increase the resiliency of stains comprising mannans and other polysaccharides. As such, the presence of lipase in the enzyme package can further improve the removal of such stains. Suitable lipases include those of bacterial or fungal or synthetic origin. Chemically modified or protein engineered mutants are included. Examples of useful lipases include lipases from Humicola (synonym Thermomyces), e.g., from H. lanuginosa (T. lanuginosus) or from H. insolens, a Pseudomonas lipase, e.g., from P. alcaligenes or P. pseudoalcaligenes, P. cepaciaP. stutzeri, P. fluorescens, Pseudomonas sp. strain SD 705, P. wisconsinensis, a Bacillus lipase, e.g., from B. subtilis (Dartois et al. (1993), Biochemica et Biophysica Acta, 1131, 253-360), B. stearothermophilus or B. pumilus .
The lipase may be a “first cycle lipase” such as those described in U.S. Pat. 6,939,702 B1 and US PA 2009/0217464. In one aspect, the lipase is a first-wash lipase, preferably a variant of the wild-type lipase from Thermomyces lanuginosus comprising T231R and N233R mutations. The wild-type sequence is the 269 amino acids (amino acids 23 - 291) of the Swissprot accession number Swiss-Prot 059952 (derived from Thermomyces lanuginosus (Humicola lanuginosa)). Preferred lipases include those sold under the tradenames Lipex®, Lipolex® and Lipoclean®.
Other suitable lipases include: Liprl 139, e.g. as described in WO2013/171241; TfuLip2, e.g. as described in WO2011/084412 and WO2013/033318; Pseudomonas stutzeri lipase, e.g. as described in WO2018228880; Microbulbifer thermotolerans lipase, e.g. as described in WO2018228881; Sulfobacillus acidocaldarius lipase, e.g. as described in EP3299457; LIP062 lipase e.g. as described in WO2018209026; PinLip lipase e.g. as described in WO2017036901 and Absidia sp. lipase e.g. as described in WO2017005798.
A suitable lipase is a variant of SEQ ID NO:5 comprising:
One preferred lipase is a variant of SEQ ID NO: 5 comprising the following substitutions: T231R, N233R, D27R, G38A, D96E, D111A, G163K, D254S and P256T
One preferred lipase is a variant of SEQ ID NO: 5 comprising the following substitutions: T231R, N233R, N33Q, G91Q, E210Q, I255A.
Suitable lipases are commercially available from Novozymes, for example as Lipex Evity 100L, Lipex Evity 200L (both liquid raw materials) and Lipex Evity 105T (a granulate). These lipases have different structures to the products Lipex 100L, Lipex 100T and Lipex Evity 100T which are outside the scope of the invention.
Cellulases: Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Suitable cellulases include cellulases from the genera Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Acremonium, e.g., the fungal cellulases produced from Humicola insolens, Myceliophthora thermophila and Fusarium oxysporum. disclosed in US 4,435,307, US 5,648,263, US 5,691,178, US 5,776,757 and US 5,691,178.
In one aspect, preferred enzymes include microbial-derived endoglucanases exhibiting endo-beta-1,4-glucanase activity (E.C. 3.2.1.4), preferably selected from the group comprising:
Suitable endoglucanases are sold under the tradenames Celluclean® and Whitezyme® (Novozymes A/S, Bagsvaerd, Denmark). Examples include Celluclean® 5000L, Celluclean® Classic 400L, Celluclean® Classic 700T, Celluclean® 4500T, Whitezyme®1.5T, Whitezyme® 2.0L.
Other commercially available cellulases include Celluzyme®, Carezyme®, Carezyme® Premium (Novozymes A/S), Clazinase®, Puradax HA®, Revitalenz® 1000, Revitalenz® 2000 (Genencor International Inc.), KAC-500(B)® (Kao Corporation), Biotouch® FCL, Biotouch® DCL, Biotouch® DCC, Biotouch® NCD, Biotouch® FCC, Biotouch® FLX1 (AB Enzymes)
Suitable glucanases include endo-0-1,3-glucanases, preferably from E.C. class 3.2.1.39, preferably obtained from Paenibacillus sp, Zobellia galactanivorans, Thermotoga petrophila or Trichoderma sp micro-organism, preferably Paenibacillus sp or Zobellia galactanivorans, most preferably Paenibacillus sp.
Amylases: Preferably the composition of the invention comprises an amylase. Suitable alpha-amylases include those of bacterial or fungal origin. Chemically or genetically modified mutants (variants) are included. A preferred alkaline alpha-amylase is derived from a strain of Bacillus, such as Bacillus licheniformis, Bacillus amyloliquefaciens, Bacillus stearothermophilus, Bacillus subtilis, or other Bacillus sp., such as Bacillus sp. NCBI 12289, NCBI 12512, NCBI 12513, DSM 9375 (USP 7,153,818) DSM 12368, DSMZ no. 12649, KSM AP1378 (WO 97/00324), KSM K36 or KSM K38 (EP 1,022,334). Preferred amylases include:
Preferred amylases are engineered enzymes, wherein one or more of the amino acids prone to bleach oxidation have been substituted by an amino acid less prone to oxidation. In particular it is preferred that methionine residues are substituted with any other amino acid. In particular it is preferred that the methionine most prone to oxidation is substituted. Preferably the methionine in a position equivalent to 202 in SEQ ID NO:11 is substituted. Preferably, the methionine at this position is substituted with threonine or leucine, preferably leucine.
Suitable commercially available alpha-amylases include DURAMYL®, LIQUEZYME®, TERMAMYL®, TERMAMYL ULTRA®, NATALASE®, SUPRAMYL®, STAINZYME®, STAINZYME PLUS®, FUNGAMYL®, ATLANTIC®, ACHIEVE ALPHA®, AMPLIFY® PRIME, INTENSA® and BAN® (Novozymes A/S, Bagsvaerd, Denmark), KEMZYM® AT 9000 Biozym Biotech Trading GmbH Wehlistrasse 27b A-1200 Wien Austria, RAPIDASE®, PURASTAR®, ENZYSIZE®, OPTISIZE HT PLUS®, POWERASE®, PREFERENZ S® series (including PREFERENZ S1000® and PREFERENZ S2000® and PURASTAR OXAM® (DuPont., Palo Alto, California) and KAM® (Kao, 14-10 Nihonbashi Kayabacho, 1-chome, Chuo-ku Tokyo 103-8210, Japan).
Preferably, the composition comprises at least 0.01 mg, preferably from about 0.05 to about 10, more preferably from about 0.1 to about 6, especially from about 0.2 to about 5 mg of active amylase/ g of composition.
Peroxidases/Oxidases: Suitable peroxidases/oxidases include those of plant, bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Examples of useful peroxidases include peroxidases from Coprinus, e.g., from C. cinereus, and variants thereof as those described in WO 93/24618, WO 95/10602, and WO 98/15257.
Commercially available peroxidases include GUARDZYME® (Novozymes A/S).
Pectate lyase: Suitable pectate lyases include those sold under the tradenames Pectawash®, Pectaway®, X-Pect®, (all Novozymes A/S, Bagsvaerd, Denmark) Preferenz® F1000 (DuPont Industrial Biosciences).
Mannanases. The composition preferably comprises one of more mannanase enzymes. As used herein, the term “mannanase” or “galactomannanase” denotes a mannanase enzyme defined according to that known in the art as mannan endo-1,4-beta-mannosidase and having the alternative names beta-mannanase and endo-1,4-mannanase and catalysing hydrolysis of 1,4-beta-D-mannosidic linkages in mannans, galactomannans, glucomannans, and galactoglucomannans. Mannanases are classified according to the Enzyme Nomenclature as EC 3.2.1.78 and belong in Glycosyl Hydrolase families 5, 26 and 113. Many suitable mannanases belong to Glycosyl Hydrolase family 5. Commercially available mannanases include all those sold under the tradenames Mannaway® (Novozymes A/S) such as Mannaway® 200L and Mannaway Evity 4.0T Other commercially available mannanases include Effectenz® M1000, Mannastar® 375, Preferenz M100 and Purabrite® (all DuPont Industrial Biosciences) and Biotouch M7 (AB Enzymes). Other suitable mannanases belong to Glycosyl Hydrolase family 26 including those described in WO2018191135, WO2015040159, WO2017021515, WO2017021516, WO2017021517 and WO2019081515. Suitable mixtures of mannanases include the combinations of Glycosyl Hydrolase family 5 and Glycosyl Hydrolase family 26 mannanases described in WO2019081515.
Nucleases: Preferably the composition comprises a nuclease such as a RNase or DNase or mixtures thereof. The nuclease enzyme is an enzyme capable of cleaving the phosphodiester bonds between the nucleotide sub-units of nucleic acids. The nuclease enzyme herein is preferably a deoxyribonuclease or ribonuclease enzyme or a functional fragment thereof. By functional fragment or part is meant the portion of the nuclease enzyme that catalyzes the cleavage of phosphodiester linkages in the DNA backbone and so is a region of said nuclease protein that retains catalytic activity. Thus, it includes truncated, but functional versions, of the enzyme and/or variants and/or derivatives and/or homologues whose functionality is maintained.
Preferably the nuclease enzyme is a deoxyribonuclease, preferably selected from any of the classes E.C. 3.1.21.x, where x=1, 2, 3, 4, 5, 6, 7, 8 or 9, E.C. 3.1.22.y where y=1, 2, 4 or 5, E.C. 3.1.30.z where z= 1 or 2, E.C. 3.1.31.1 and mixtures thereof.
DNase: Suitable DNases include wild-types and variants of DNases defined by SEQ ID NOS: 1, 2, 3, 4, 5, 6, 7, 8 and 9 in WO2017162836 (Novozymes), and SEQ ID NOS: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 50, 51, 52, 53, and 54 in WO2018108865, and variants of the Bacillus cibi DNase including those described in WO2018011277 (Novozymes), incorporated herein by reference. Preferred DNases are as claimed in EP3476935A.
RNase: suitable RNases include wild-types and variants of DNases defined by SEQ ID NOS: 3, 6, 9, 12, 15, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 72 and 73 in WO2018178061 (Novozymes), and SEQ ID NOS: 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103 and 104 in WO2020074499 (Novozymes), incorporated herein by reference. Xanthan gum-degrading enzymes: The composition may comprise one of more xanthan gum-degrading enzymes. Suitable enzymes for degradation of xanthan gum-based soils include xanthan endoglucanase, optionally in conjunction with a xanthan lyase. As used herein, the term “xanthan endoglucanase” denotes an enzyme exhibiting endo-β-1,4-glucanase activity that is capable of catalysing hydrolysis of the 1,4-linked β-D-glucose polymeric backbone of xanthan gum, optionally in conjunction with a suitable xanthan lyase enzyme. Suitable xanthan endoglucanases are described in WO2013167581, WO2015181299, WO2015181292, WO2017046232, WO2017046260, WO201837062, WO201837065, WO2019038059 and WO2019162000. As used herein, the term “xanthan lyase” denotes an enzyme that cleaves the β-D-mannosyl-β-D-1,4-glucuronosyl bond of xanthan gum. Such enzymes belong to E.C. 4.2.2.12. Suitable xanthan lyases are described in WO2015001017, WO2018037061, WO201837064, WO2019038060, WO2019162000 and WO2019038057.
Galactanase: Preferably the composition comprises a galactanase, ie. an extracellular polymer-degrading enzyme that includes an endo-beta-1,6-galactanase enzyme. The term “endo-beta-1,6-galactanase” or “a polypeptide having endo-beta-1,6-galactanase activity” means a endo-beta-1,6-galactanase activity (EC 3.2.1.164) from the glycoside hydrolase family 30 that catalyzes the hydrolytic cleavage of 1,6-3-D-galactooligosaccharides with a degree of polymerization (DP) higher than 3, and their acidic derivatives with 4-O-methylglucosyluronate or glucosyluronate groups at the non-reducing terminals. For purposes of the present disclosure, endo-beta-1,6-galactanase activity is determined according to the procedure described in WO 2015185689 in Assay I. Suitable examples from class EC 3.2.1.164 are described in WO 2015185689, such as the mature polypeptide SEQ ID NO: 2.
The additional enzyme(s) may be included in the detergent composition by adding separate enzyme additives containing an additional enzyme, or a combined enzyme additive comprising two or several or all of the additional enzymes. Such an enzyme additive can be in the form of a granulate, a liquid or slurry, preferably additionally comprising an enzyme stabiliser.
Preferably the or each additional enzyme will be present in the composition in an amount of at least 0.0001 to about 0.1% weight percent of pure active enzyme protein, such as from about 0.0001% to about 0.01%, from about 0.001% to about 0.01% or from about 0.001% to about 0.01% based on the weight of the composition.
Fabric Hueing Agent. The composition may comprise a fabric hueing agent (sometimes referred to as shading, bluing or whitening agents/dyes). Typically the hueing agent provides a blue or violet shade to fabric. Hueing agents can be used either alone or in combination to create a specific shade of hueing and/or to shade different fabric types. This may be provided for example by mixing a red and green-blue dye to yield a blue or violet shade. Hueing agents may be selected from any known chemical class of dye, including but not limited to acridine, anthraquinone (including polycyclic quinones), azine, azo (e.g., monoazo, disazo, trisazo, tetrakisazo, polyazo), including premetallized azo, benzodifurane and benzodifuranone, carotenoid, coumarin, cyanine, diazahemicyanine, diphenylmethane, formazan, hemicyanine, indigoids, methane, naphthalimides, naphthoquinone, nitro and nitroso, oxazine, phthalocyanine, pyrazoles, stilbene, styryl, triarylmethane, triphenylmethane, xanthenes and mixtures thereof. Preferred are azo dyes, especially mono- or bis- azo dyes, triarylmethane dyes and anthraquinone dyes.
Suitable fabric hueing agents include dyes, dye-clay conjugates, and organic and inorganic pigments. Suitable dyes include small molecule dyes and polymeric dyes. Suitable small molecule dyes include small molecule dyes selected from the group consisting of dyes falling into the Colour Index (C.I.) classifications of Direct, Basic, Reactive or hydrolysed Reactive, Solvent or Disperse dyes. Examples of suitable small molecule dyes include for example small molecule dyes selected from the group consisting of Colour Index (Society of Dyers and Colourists, Bradford, UK) numbers Direct Violet dyes such as 9, 35, 48, 51, 66, and 99, Direct Blue dyes such as 1, 71, 80 and 279, Acid Red dyes such as 17, 73, 52, 88 and 150, Acid Violet dyes such as 15, 17, 24, 43, 49, 50 and 51, Acid Blue dyes such as 15, 17, 25, 29, 40, 45, 75, 80, 83, 90 and 113, Acid Black dyes such as 1, Basic Violet dyes such as 1, 3, 4, 10 and 35, Basic Blue dyes such as 3, 16, 22, 47,66,75 and 159, Disperse or Solvent dyes such as those described in EP1794275 or EP1794276, or dyes as disclosed in US 7,208,459 B2, and mixtures thereof.
Preferred are polymeric dyes include polymeric dyes selected from the group consisting of polymers containing covalently bound (sometimes referred to as conjugated) chromogens, (dye-polymer conjugates), for example polymers with chromogens co-polymerized into the backbone of the polymer and mixtures thereof. Polymeric dyes include those described in WO2011/98355, WO2011/47987, US2012/090102, WO2010/145887, WO2006/055787 and WO2010/142503.
Preferred polymeric dyes comprise alkoxylated, preferably ethoxylated azo, anthraquinone or triarylmethane dyes. Ethoxylated thiophene azo dyes are especially preferred, for example polymeric dyes selected from the group consisting of fabric-substantive colorants sold under the name of Liquitint® (Milliken, Spartanburg, South Carolina, USA), dye-polymer conjugates formed from at least one reactive dye and a polymer selected from the group consisting of polymers comprising a moiety selected from the group consisting of a hydroxyl moiety, a primary amine moiety, a secondary amine moiety, a thiol moiety and mixtures thereof. Suitable polymeric dyes include polymeric dyes selected from the group consisting of Liquitint® Violet CT, carboxymethyl cellulose (CMC) covalently bound to a reactive blue, reactive violet or reactive red dye such as CMC conjugated with C.I. Reactive Blue 19, sold by Megazyme, Wicklow, Ireland under the product name AZO-CM-CELLULOSE, product code S-ACMC, alkoxylated triphenylmethane polymeric colourants, alkoxylated thiophene polymeric colourants, and mixtures thereof.
Preferred hueing dyes include the alkoxylated thiophene azo whitening agents found in US2008/0177090 which may be optionally anionic, such as those selected from Examples 1-42 in Table 5 of WO2011/011799. Other preferred dyes are disclosed in US 8138222.
Suitable pigments include pigments selected from the group consisting of Ultramarine Blue (C.I. Pigment Blue 29), Ultramarine Violet (C.I. Pigment Violet 15) and mixtures thereof. Pigments and/or dyes may also be added to add colour for aesthetic reasons. Preferred are organic blue, violet and/or green pigments.
Builders: The detergent composition may further contain builders, such as builders based on carbonate, bicarbonate or silicates which may be Zeolites, such as Zeolite A, Zeolite MAP (Maximum Aluminium type P). Zeolites, useable in laundry preferably has the formula Nai2(AlO2)12(SiO2)12·27H2O and the particle size is usually between 1-10 µm for zeolite A and 0.7-2 um for zeolite MAP. Other builders are Sodium metasilicate (Na2SiO3 · nH2O or Na2Si2O5 · n H2O) strong alkaline and preferably used in dish wash. In preferred embodiments, the amount of a detergent builder may be above 5%, above 10%, above 20%, above 30%, above 40% or above 50%, and may be below 80%, 65%. In a dishwash detergent, the level of builder is typically 40-65%, particularly 50-65% or even 75-90%.
Encapsulates: The composition may comprise an encapsulated benefit agent, comprising a core and a shell having an inner and outer surface, said shell encapsulating said core. The core may comprise a material selected from the group consisting of perfumes; brighteners; dyes; insect repellants; silicones; waxes; flavors; vitamins; fabric softening agents; skin care agents in one aspect, paraffins; enzymes; anti-bacterial agents; bleaches; sensates; and mixtures thereof. The shell may comprise a material selected from the group consisting of polyethylenes; polyamides; polystyrenes; polyisoprenes; polycarbonates; polyesters; polyacrylates; aminoplasts, in one aspect said aminoplast may comprise a polyureas, polyurethane, and/or polyureaurethane, in one aspect said polyurea may comprise polyoxymethyleneurea and/or melamine formaldehyde; polyolefins; polysaccharides, in one aspect said polysaccharide may comprise alginate and/or chitosan; gelatin; shellac; epoxy resins; vinyl polymers; water insoluble inorganics; silicone; and mixtures thereof. Preferred encapsulates comprise a core comprising perfume. Such encapsulates are perfume microcapsules.
Enzyme stabilizer: The composition may comprise an enzyme stabilizer. Suitable enzyme stabilisers may be selected from the group consisting of (a) inorganic salts selected from the group consisting of calcium salts, magnesium salts and mixtures thereof; (b) carbohydrates selected from the group consisting of oligosaccharides, polysaccharides and mixtures thereof and sugar or sugar alcohol; (c) mass efficient reversible protease inhibitors selected from the group consisting of phenyl boronic acid and derivatives thereof, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formylphenyl boronic acid, or a peptide aldehyde such as di-, tri- or tetrapeptide aldehydes or aldehyde analogues (either of the form B1-B0-R wherein, R is H, CH3, CX3, CHX2, or CH2X (X=halogen), B0 is a single amino acid residue (preferably with an optionally substituted aliphatic or aromatic side chain); and B1 consists of one or more amino acid residues (preferably one, two or three), optionally comprising an N-terminal protection group, or as described in WO09118375, WO98/13459); and (d) reversible protease inhibitors such as a boron containing compound; (e) polyols such as propylene glycol or glycerol 1-2 propane diol; (f) calcium formate and/or sodium formate; (g) protease inhibitor of the protein type such as RASI, BASI, WASI (bifunctional alpha-amylase/subtilisin inhibitors of rice, barley and wheat) or CI2 or SSI and (h) any combination thereof.
Structurant: In one aspect, the composition may comprise a structurant selected from the group consisting of diglycerides and triglycerides, ethylene glycol distearate microcrystalline cellulose, cellulose-based materials, microfiber cellulose, biopolymers, xanthan gum, gellan gum, and mixtures thereof.
Polymers: The composition preferably comprises one or more polymers. Preferred examples are carboxymethylcellulose, poly(vinyl-pyrrolidone), poly (ethylene glycol), poly(vinyl alcohol), poly(vinylpyridine-N-oxide), poly(vinylimidazole), polycarboxylates such as polyacrylates, maleic/acrylic acid copolymers and lauryl methacrylate/acrylic acid co-polymers and amphiphilic polymers and mixtures thereof. Amphiphilic cleaning polymers: Preferably, the amphiphilic cleaning polymer is a compound having the following general structure: bis((C2H5O)(C2H4O)n)(CH3)—N+—CxH2x—N+—(CH3)—bis((C2H5O)(C2H4O)n), wherein n = from 20 to 30, and x = from 3 to 8, or sulphated or sulphonated variants thereof.
Amphiphilic alkoxylated grease cleaning polymers of the present invention refer to any alkoxylated polymer having balanced hydrophilic and hydrophobic properties such that they remove grease particles from fabrics and surfaces. Specific embodiments of the amphiphilic alkoxylated grease cleaning polymers of the present invention comprise a core structure and a plurality of alkoxylate groups attached to that core structure. These may comprise alkoxylated polyalkylenimines, preferably having an inner polyethylene oxide block and an outer polypropylene oxide block.
The core structure may comprise a polyalkylenimine structure comprising, in condensed form, repeating units of formulae (I), (II), (III) and (IV):
wherein # in each case denotes one-half of a bond between a nitrogen atom and the free binding position of a group A1 of two adjacent repeating units of formulae (I), (II), (III) or (IV); * in each case denotes one-half of a bond to one of the alkoxylate groups; and A1 is independently selected from linear or branched C2-C6-alkylene; wherein the polyalkylenimine structure consists of 1 repeating unit of formula (I), x repeating units of formula (II), y repeating units of formula (III) and y+1 repeating units of formula (IV), wherein x and y in each case have a value in the range of from 0 to about 150; where the average weight average molecular weight, Mw, of the polyalkylenimine core structure is a value in the range of from about 60 to about 10,000 g/mol.
The core structure may alternatively comprise a polyalkanolamine structure of the condensation products of at least one compound selected from N-(hydroxyalkyl)amines of formulae (I.a) and/or (I.b),
wherein A are independently selected from C1-C6-alkylene; R1, R1*, R2, R2*, R3, R3*, R4, R4*, R5 and R5* are independently selected from hydrogen, alkyl, cycloalkyl or aryl, wherein the last three mentioned radicals may be optionally substituted; and R6 is selected from hydrogen, alkyl, cycloalkyl or aryl, wherein the last three mentioned radicals may be optionally substituted.
The plurality of alkylenoxy groups attached to the core structure are independently selected from alkylenoxy units of the formula (V)
wherein * in each case denotes one-half of a bond to the nitrogen atom of the repeating unit offormula (I), (II) or (IV); A2 is in each case independently selected from 1,2-propylene, 1,2-butylene and 1,2-isobutylene; A3 is 1,2-propylene; R is in each case independently selected from hydrogen and C1-C4-alkyl; m has an average value in the range of from 0 to about 2; n has an average value in the range of from about 20 to about 50; and p has an average value in the range of from about 10 to about 50.
Carboxylate polymer: The composition preferably also includes one or more carboxylate polymers such as a maleate/acrylate random copolymer or polyacrylate homopolymer. In one aspect, the carboxylate polymer is a polyacrylate homopolymer having a molecular weight of from 4,000 Da to 9,000 Da, or from 6,000 Da to 9,000 Da.
Soil release polymer: The composition preferably also comprises one or more soil release polymers having a structure as defined by one of the following structures (I), (II) or (III):
wherein:
Suitable soil release polymers are polyester soil release polymers such as Repel-o-tex polymers, including Repel-o-tex SF, SF-2 and SRP6 supplied by Rhodia. Other suitable soil release polymers include Texcare polymers, including Texcare SRA100, SRA300, SRN100, SRN170, SRN240, SRN300 and SRN325 supplied by Clariant. Other suitable soil release polymers are Marloquest polymers, such as Marloquest SL supplied by Sasol.
Cellulosic polymer: The composition preferably also comprises one or more cellulosic polymers including those selected from alkyl cellulose, alkyl alkoxyalkyl cellulose, carboxyalkyl cellulose, alkyl carboxyalkyl cellulose. In one aspect, the cellulosic polymers are selected from the group comprising carboxymethyl cellulose, methyl cellulose, methyl hydroxyethyl cellulose, methyl carboxymethyl cellulose, and mixures thereof. In one aspect, the carboxymethyl cellulose has a degree of carboxymethyl substitution from 0.5 to 0.9 and a molecular weight from 100,000 Da to 300,000 Da.
Bleaching system: The composition may contain a bleaching system, for example comprising a H2O2 source such as perborate or percarbonate which may be combined with a peracid-forming bleach activator such as tetraacetylethylenediamine or nonanoyloxybenzenesulfonate. Alternatively, the bleaching system may comprise peroxyacids of, e.g., the amide, imide, or sulfone type. In general, when a bleaching agent is used, the compositions of the present invention may comprise from about 0.1% to about 30% or even from about 0.1% to about 25% bleaching agent by weight of the subject cleaning composition.
Chelating Agents: The composition preferably comprises a chelating agent, preferably in an amount from 0.005% to about 15% or even from about 3.0% to about 10% chelating agent by weight of the composition. Suitable chelating agents include copper, iron and/or manganese chelating agents and mixtures thereof. Preferred chelants (complexing agents) include DTPA (Diethylene triamine pentaacetic acid), HEDP (Hydroxyethane diphosphonic acid), DTPMP (Diethylene triamine penta(methylene phosphonic acid)), 1,2-Dihydroxybenzene-3,5-disulfonic acid disodium salt hydrate, ethylenediamine, diethylene triamine, ethylenediaminedisuccinic acid (EDDS), N-hydroxyethylethylenediaminetri-acetic acid (HEDTA), triethylenetetraaminehexaacetic acid (TTHA), N-hydroxyethyliminodiacetic acid (HEIDA), dihydroxyethylglycine (DHEG), ethylenediaminetetrapropionic acid (EDTP), methyl-glycine-diacetic acid (MGDA), glutamic-N,N- diacetic acid (GLDA), iminodisuccinic acid (IDS), carboxy methyl inulin; and salts derivatives thereof and mixtures thereof. Preferred chelants are selected from the group consisting of methyl-glycine-diacetic acid (MGDA), its salts and derivatives thereof, glutamic-N,N- diacetic acid (GLDA), its salts and derivatives thereof, iminodisuccinic acid (IDS), its salts and derivatives thereof, carboxy methyl inulin, its salts and derivatives thereof and mixtures thereof. MGDA and salts thereof are especially preferred, in particular comprising the three-sodium salt of MGDA.
The composition may also contain other conventional detergent ingredients such as e.g. fabric conditioners including clays, foam boosters, suds suppressors, anti-corrosion agents, soil-suspending agents, anti-soil re-deposition agents, dyes, bactericides, optical brighteners, hydrotropes, tarnish inhibitors, organic solvents such as ethanol or perfumes.
The present invention also provides a method for treating a fabric, the method comprising in a contacting step, contacting a fabric with an aqueous wash liquor comprising an alginate lyase enzyme as described above, preferably in an amount from 0.01 ppm to 10 ppm, preferably from 0.1 ppm to 1 ppm; and an anionic surfactant preferably in an amount from 0.05 to 50 g/l, more preferably from 0.2 g/l to 5 g/l or 0.5 g/1 to 3 g/l, and hexosaminidase enzyme as described above preferably in an amount from 0.01 ppm to 10 ppm, preferably from 0. 1 ppm to 1 ppm; and an anionic surfactant preferably in an amount from 0.05 to 50 g/l, more preferably from 0.2 g/l to 5 g/l or 0.5 g/l to 3 g/l.
The aqueous wash liquor may be formed by adding a composition as described above to water, for example in a washing machine or hand washing process. Alternatively, the aqueous wash liquor may be formed by adding the alginate lyase enzyme, hexosaminidase enzyme and anionic surfactant as separate components, into water to form the wash liquor. The fabric may be optionally subsequently washed, and/or rinsed and/or dried.
The alginate lyase enzyme, hexosaminidase enzyme and any additional enzyme may be present in the wash liquor in an amount corresponding to 0.001-100 mg of active enzyme protein per liter of wash liquor, preferably 0.005-5 mg of active enzyme protein per liter of wash liquor, more preferably 0.01-1 mg of enzyme protein per liter of wash liquor and in particular 0.1-1 mg of enzyme protein per liter of wash.
In the contacting step, or in a subsequent step, it may be preferred to use mechanical agitation to promote cleaning and removal of the broken-down soil by-products from the fabric. The wash liquor preferably has a pH of from about 7 or 8 to about 10.5. The composition may typically be employed at concentrations of from about 500 ppm to about 15,000 ppm in solution to form the wash liquor. The wash liquor preferably has a temperature from about 5° C. to about 40° C., or preferably from 10 to 35° C. or 30° C. or 25° C. The water to fabric ratio is typically from about 1:1 to about 30:1.
The alginate lyase activity is measured using Mannuronic Block Oligosaccharide DP20-DP35 (Product code: ALG601) and Guluronate oligosaccharide DP2-DP45 (Product code: ALG610) from Elicityl, France as substrates. Mannuronic Block Oligosaccharide DP20-DP35 is used to measure polyM activity, whereas Guluronate oligosaccharide DP2-DP45 was used for measuring polyG activity.
A solution of 2.5% of each substrate was suspended in Tris buffer at pH 8.3 and incubated with 3 ppm of each alginate lyase of interest, at 25° C. for 60 min, in a 96 well plate.
The activity towards each of the substrates is given as the delta absorbance at 235 nm in a spectrophotometer vs nil enzyme sample when the enzyme was put in contact with each of the substrates. These values are then used to evaluate the activity towards β-D-mannuronic acid blocks (polyM) and/or α-L-guluronic acid blocks (polyG) of the respective enzymes. An enzyme having activity towards poly(beta-D-mannuronate) (polyM activity) preferably provides a delta absorbance versus nil enzyme of at least 0.1 absorbance units, more preferably at least 0.15 absorbance units and more preferably at least 0.2 absorbance units. An enzyme having activity towards poly(alpha-L-guluronate) (polyG activity) preferably provides a delta absorbance versus nil enzyme of at least 0.3 absorbance units, preferably at least 0.4 or even 0.5 or 0.6 absorbance units.
The following test was completed to compare dingy soil removal from fabric when washing soiled fabric with a composition comprising an alginate lyase together with a hexosaminidase; compared to washing soiled fabric with an alginate lyase or hexosaminidase only control.
Soiled fabric testing was conducted using a Stuart Flask Shaker SF1. 2 cm2 square segment of a terry towel dingy-soiled textile was added into one 50 mL centrifuge tube (VWR International Ltd, Leicester, UK) along with three additional pieces of ballast swatches, each 2 cm2.
Alginate lyase was used at a concentration of 1 ppm active enzyme. Hexosaminidase was used at a concentration of 2 ppm active enzyme.
In each vessel, 20 mL of a solution containing 1.5 g/L of Ariel liquid (nil enzyme, 20-25 wt% anionic surfactant) was added. The stains were added and incubated with the alginate lyase and Ariel liquid solution for 30 minutes at 800 oscillations per minute at 25° C. A blank was obtained by adding only Ariel liquid and borehole water (19 grains per gallons) to 1 of the vessels, obtaining a concentration of Ariel equal to 1.5 g/L. For each enzyme treatment, four replicates were collected. At the end of the incubation time, the wash water was drained, and the washed stain swatches laid flat on a rack, dried with a paper towel to remove excess wash solution and then placed in an oven at 40° C. for 1 hour.
This process was repeated a further three times, resulting in a total of 4 washed stains per treatment, i.e. 4 external replicates, each comprising 1 stains.
Once dried, CIE-ASTM whiteness measurements were taken using a pre-calibrated ColourEye 7000A Solid State Spectrophotometer (X-Rite Europe GmbH) using UVD65 illuminant.
Average test results are presented in the table below. They show that the addition of 1 ppm alginate lyase together with 2 ppm hexosaminidase through the wash results in an improved whiteness measurement of 70.17 whiteness units compared to 63.88 whiteness units when washing in Nil enzyme unit dose solution. This difference is statistically significant, i.e. greater than 90% confidence level according to student’s T-test (P<0.1). Addition of alginate lyase and hexosaminidase enzymes alone resulted in whiteness values of 64.89 and 66.90 whiteness units, respectively. Both these values were not statistically significant to Nil enzyme control, i.e both lower than 90% confidence level according to students T-test (P>0.1)
Examples 1-6. Granular laundry detergent compositions designed for hand washing or top-loading washing machines.
5DNase as defined herein (mg active per 100 g composition)
4Amylase Stainzyme® Plus (mg active)
6Alginate lyase as defined herein (mg active per 100 g of detergent)
7hexosaminidase as defined herein (mg active per 100 g composition)
Examples 7-13. Granular laundry detergent compositions designed for front-loading automatic washing machines.
4Amylase Stainzyme® Plus (mg active)
5DNase as defined herein (mg active per 100 g detergent)
6Alginate lyase as defined herein (mg active per 100 g of detergent)
7Hexosaminidase as defined herein (mg active per 100 g detergent)
∗DNase is shown as mgs of active enzyme per 100 g of detergent.
Examples 14-21. Heavy Duty Liquid laundry detergent compositions
4Amylase Amplify® (mg active)
5DNase (mg active per 100 g detergent)
6Alginate lyase as defined herein (mg active per 100 g of detergent)
7Hexosaminidase as defined herein (mg active per 100 g detergent)
Examples 22-28. Unit Dose Laundry detergent compositions. Such unit dose formulations can comprise one or multiple compartments.
5DNase described herein (mg active per 100 g detergent)
4Amylase Amplify® (active protein)
6Alginate lyase as defined herein (mg active per 100 g of detergent)
7Hexosaminidase as defined herein (mg active per 100 g detergent)
Multiple compartment unit dose laundry detergent formulations of the present invention are provided below. In these examples the unit dose has three compartments, but similar compositions can be made with two, four or five compartments. The film used to encapsulate the compartments is polyvinyl alcohol.
5DNase as defined herein (mg active)
6Alginate lyase as defined herein (mg active per 100 g of detergent)
7Hexosaminidase as defined herein (mg active per 100 g detergent)
The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “40 mm” is intended to mean “about 40 mm”.
Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.
While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 20204791.6 | Oct 2020 | EP | regional |
| 20204794.0 | Oct 2020 | EP | regional |
| 20204795.7 | Oct 2020 | EP | regional |
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/US2021/057168 | Oct 2021 | WO |
| Child | 18297366 | US |
