Tomato Products

Information

  • Patent Application
  • 20100136193
  • Publication Number
    20100136193
  • Date Filed
    November 23, 2009
    15 years ago
  • Date Published
    June 03, 2010
    14 years ago
Abstract
Tomato products obtained from tomato juice or tomato passata having the following composition in percentage by weight:
Description
BACKGROUND OF THE INVENTION

1. Field of the Invention


The present invention relates to novel tomato products having an improved saucing power in particular on pasta.


2. Description of the Related Prior Art


Tomato products, prepared from the tomato juice obtained by fruit trituration, seed and peel separation, are known in the prior art. The tomato juice is an aqueous suspension of insoluble solids in an aqueous solution wherein organic and inorganic substances are dissolved.


From the obtained juice other products such as tomato passatas and tomato concentrates can be obtained. Tomato passatas in general are obtained from juices by partial concentration. The tomato concentrates are obtained by stronger concentration processes. The methods generally used are the reverse osmosis, cryoconcentration and concentration by evaporation. By using the reverse osmosis it is not possible to operate at room temperature. Temperatures of about 70° C. are requested in order to have a satisfactory concentration yield; furthermore it is necessary to clean and regenerate the membranes by means of chemical detergents, which must then be removed. In fact said compounds are pollutant of the tomato products. See C. S. Leoni “I derivati industriali del pomodoro”, experimental Station for the food preserves industry in Parma, October 1993, pages 92-93. The cryoconcentration is inapplicable to the tomato juice due to the high percentage of solids in suspension, which would be separated together with ice. See page 93 of the previous quotation.


In practice the concentration by evaporation remains the method of choice to concentrate the tomato juice. See page 93 of the previous reference. Concentration by evaporation implies juice heating; the duration of heating and the maximum temperature reached in the juice during the concentration step leads to organoleptic and nutritional variations of the product. The organoleptic variations are a caramel taste and a typical cooking (“cotto”) aroma present in tomato concentrates and they are mainly due to the formation during juice concentration of hydrogen sulphide, dimethylsulphide, furfural, 3-methylmercaptopropanal, 2,4-heptadienal, acetaldehyde, phenylacetaldehyde. See S. Porretta “Il controllo della qualitá dei derivati del pomodoro”, experimental Station for the food preserves industry in Parma (1991), page 51; S. J. Kazeniac et al., J. Food Sci. 35 519 (1970).


The nutritional variations are mainly due to the degradation of the carotenoids present in the tomato and in particular of lycopene. The tomato as such and its products have a high nutritional value, deriving from the vitaminic components, and mainly from the contained carotenoids. It has been demonstrated that the tomato product consumption is associated to a risk decrease of some cancer types (prostata, pancreas, stomach). See H. Gerster, J. Am. Coll. Nutr. 1997, 16, 109-126; S. K. Clinton Nutr. Rev. 1998 56 35-51. The previously described beneficial nutritional effects are to be ascribed to the carotenoids contained in the tomato and in particular to lycopene. Recently it has been shown that during the concentration by evaporation of the tomato juice there is a degradation of carotenoids, lycopene too. See R. Gary et al., J. Agric. Food Chem. 2001 49 3713-3717.


It is also known that it is not feasible to filter the tomato products, in particular tomato juices and tomato passatas, since the filter is quite immediately occluded.


Most of the commercial tomato products must be diluted before use. The commercial tomato concentrates, for example in Italy, are classified as follows:


















semiconcentrate
dry residue 12% by weight;



concentrate (C)
dry residue 18% by weight;



double concentrate (DC)
dry residue 28% by weight;



triple concentrate (TC)
dry residue 36% by weight;










Generally the concentrated products are diluted before and during the use. The saucing power of the triple concentrate (TC) as such, before dilution, is higher than that of the other commercial tomato products, concentrates included. By saucing power it is meant the product capability to stick to foods to which it is added, for instance pasta. However, as above mentioned, said concentrated products must be diluted before or during use because of their too strong and unpleasant taste. Consequently the advantage of the higher saucing power of said products is lost. Generally all the commercial tomato concentrates having a dry residue above 12% wt. show such taste problem and therefore must be diluted.


If a semiconcentrate at 12% dry residue is used, since it generally should not be diluted before use showing no problems of unpleasant taste, the saucing power is very low, even lower than the saucing power of TC as such. The tomato products known as tomato passatas are used as a ready base for quick sauce preparation. Generally in tomato passatas the dry residue, which can be determined as described afterwards, is lower than or equal to 10% by weight, generally comprised between 8%-10% by weight.


BRIEF SUMMARY OF THE INVENTION

The Applicant has surprisingly and unexpectedly found tomato products which do not need either dilution or concentration before their use, for instance on foods, said tomato products can also be used as such as foods, and have an improved saucing power, improved organoleptic properties, i.e., devoid of any caramel taste, bitter taste, cooking (“cotto”) aroma, sour taste.


An object of the invention is a composition or a tomato product obtained from tomato juice or tomato passatas having the following composition in percentage by weight:


















dry residue
 5.5-20%,



water
94.5-80%,











100% being the sum of the two components, wherein the amount of water insoluble solids and water soluble solids in the dry residue range in percentage by weight as it follows:
    • water insoluble solids from 18% to 70%,
    • water soluble solids from 82% to 30%.


      Preferably the ranges of water insoluble solids and water soluble solids in the dry residue in percentage by weight are as it follows:
    • water insoluble solids: 20%-50%,
    • water soluble solids 80%-50%.


      Still more preferably the ranges of water insoluble solids and water soluble solids in the dry residue range in percentage by weight are the following:
    • water insoluble solids: 30% to 50%,
    • water soluble solids 70%-50%.


The total dry residue, the water soluble solids and the water insoluble solids are determined as described in the Examples.





BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from the detailed description hereinbelow and from the drawings that accompany this application. These drawings should not be construed as limiting the invention in any way.



FIG. 1 shows rheological properties (shear stress/speed gradient (s−1)) of triple concentrate (TC), of product Rot (example 1) and of product Ro1 (example 2).



FIG. 2 shows rheological properties (shear stress/speed gradient (s−1)) of triple concentrate (TC) and of double concentrate (DC).



FIG. 3 shows rheological properties (shear stress/speed gradient (s−1)) of triple concentrate (TC) and of concentrate (C), and



FIG. 4 shows rheological properties (shear stress/speed gradient (s−1)) of triple concentrate (TC) and of pulped tomatoes.



FIGS. 1-4 are graphical illustrations of the data set forth in Tables 1-7.





DETAILED DESCRIPTION OF THE INVENTION

The tomato products of the invention are obtainable by the process described below that, differently from the products of the prior art, includes a more thorough separation of the tomato serum from the water insoluble solids, that affords to obtain tomato products according to the invention, having a water insoluble solid content in the dry residue even up to 70%.


To the invention tomato products it is possible to add lyophilized or cryoconcentrated serum, or serum concentrated by osmosis membrane or by evaporation under vacuum, to further improve or varying the taste. It is thus possible to obtain, for example, tomato products having a lower content of water insoluble solids in the dry residue.


Therefore in the invention tomato products it is possible to adjust the ratio between the water insoluble solids and those water soluble. The Applicant has found that by varying the amount of water soluble solids in the total solids of the composition the taste properties of the product (more or less intense tomato taste), can be suitably dosed. The olfactory properties of the product (fresh tomato smell), since the water insoluble solids retain the volatile components, mainly depend from the amount of water insoluble solids in the total solids.


Furthermore the Applicant has found that the invention tomato products can unexpectedly incorporate, for example, by mechanical mixing, without showing any serum separation, animal and vegetable fats solid at room temperature, such for example butter or margarine, and/or fats liquid at room temperature as for example vegetable oils, for example olive oil, and/or cheese having soft- or fresh-grain or hard-grain and grated.


The starting tomato product used to prepare said mixed products should preferably have a water insoluble solid content and water soluble solid content in the dry residue in the following ranges as percentages by weight:

    • water insoluble solids from 30% to 70%,
    • water soluble solids from 70% to 30%;


      still more preferably:
    • water insoluble solids from 35% to 70%,
    • water soluble solids from 65% to 30%.


The amount of fats and/or oil which can be incorporated in the composition ranges from 10 to 25% by weight referred to the weight of the starting tomato product; soft-grain cheese can be instead incorporated in any desired amount, since the two components (soft-grain cheese and tomato product) are perfectly miscible in all weight ratios; the amounts of soft-grain cheese which can be incorporated are for example from 50% to 300% by weight referred to the weight of the starting tomato product.


When food fats that are solid at room temperature are used, it is preferable to heat preliminary said fats, before mixing with the tomato product of the invention, at least up to their softening point but preferably not above their melting point.


The amount of hard-grain and grated cheeses which can be incorporated ranges from 10 to 25%. Said compositions can be used as ready-to-use sauce for foods since they incorporate, as said above, oil, butter and/or cheeses. To said compositions other usual ingredients of food products, such for example essence aromas, preservatives, etc, can be added.


As said, the invention tomato products and the compositions obtained therefrom as above defined have an improved saucing power and improved organoleptic and nutritional properties in comparison with the products on the market.


The invention products, in particular those obtainable by mixing the invention tomato products with fats and/or oils and/or cheeses, can also be used as such as foods. For example said products can be spread on bread, as it is made for soft cheese.


Said saucing power is combined with improved organoleptic properties, i.e. without a caramel, or a bitter, or a sour taste. Said organoleptic properties are instead completely absent in the commercial products showing a good saucing power. See the comparative Examples on the commercial products TC, DC and C.


The Applicant has found that the amount of water insoluble solids which must be present in the tomato product to confer an improved saucing power must be at least 18% weight with respect to the dry residue of the tomato product, preferably from 20% to 50% weight.


As foods on which to use the tomato products of the invention, pasta, meat, fish, vegetables, etc., can be mentioned.


A test to determine the saucing power is described in the Examples.


The invention products show a high content of water insoluble solids. The Applicant has found that the amount of water insoluble solids in the commercial products is not higher than 15% in the dry residue. For example in the fresh pulp the amount of water insoluble solids is generally about 12.5% of the total tomato solids (dry residue). See in “Tomato paste, Purée, Juice & Powder” P. G. Goose, Food Trade Press Ltd 1964, page 69.


The tomato compositions of the invention, as said, have an improved saucing power. As it is known, the final step for preparing in home kitchens a sauce starting from fresh tomato or from a tomato product, comprises heating with fats or oils and other aromas until obtaining a sauce endowed with satisfactory saucing power. The tomato compositions of the invention show a further advantage, with respect to the known tomato sauces, that they do not need a prior heating step before use. In this way the detrimental effect of the temperature during the preparation of the tomato-based sauces is avoided. In fact in said heating step lycopene is solubilized by fats, and in this way this compound is easily degraded by the concomitant effect of light and oxygen in the hot conditions of cooking.


The process for obtaining the tomato compositions of the invention is described herein below. It has been found, unexpectedly and surprisingly, that by using filtration but maintaining under a slow stirring the tomato suspension to be filtered, it is possible to filter the starting tomato suspensions, since the tomato mass in such conditions detaches from the filter the sediments that constitute the impermeable layer depositing on the filter surface, and incorporates them. In fact, as said, it is known that it is not feasible the filtering of the tomato products, in particular tomato juices and tomato passatas, since the filter is quickly occluded by a highly impermeable layer. The filtration process according to the present invention proceeds instead rapidly. It is ended when substantially there is no more serum separation. A compact mass is formed by filtration that can be easily recovered, since it does not stick to the filter.


It is therefore a further object of the present invention a process for the separation of the liquid (tomato juice serum) from a tomato suspension by using a separation solid-liquid apparatus wherein the mass or suspension to be filtered is maintained under slow stirring, at an angular speed generally from 1 rpm to 20 rpm, preferably from 2 rpm to 10 rpm, preferably the stirrer being of a shape to convey the suspension toward the central axis of the apparatus, or there is not a stirrer and it is the apparatus that rotates. In the alternative, the apparatus used for separating the liquid from a tomato suspension is a sieve maintained under a motion such as for example under an oscillating motion, or preferably under a nutational motion, the oscillations per minute being generally from 1 to 20 oscillations/min, preferably from 2 to 10 oscillations/min.


The process of the invention is preferably carried out under sterile conditions; in the alternative the final tomato product can undergo a sterilization process.


In said case sterilization can be performed with conventional methods, preferably by operating under mild temperature conditions, preferably under high pressures, for example comprised between 5,000-7,000 Atm.


The invention process is carried out by operating at temperatures generally in the range 5° C.-25° C., preferably 10° C.-15° C., at atmospheric pressure, or using pressures slightly higher than that atmospheric, from 760 mm Hg (0.101 MPa) up to 900 mm Hg (0.120 MPa) or by applying pressures slightly lower than the atmospheric pressure, down to 450 mm Hg (0.06 MPa). As said above, if the process of the present invention is not operated under sterile conditions, the recovered tomato product at the end of the process is subjected to sterilization processes.


The process for obtaining the invention tomato products can be performed in a separation solid liquid apparatus constituted for instance of a vessel made for instance of food grade stainless steel, having walls with openings or slots formed for instance with woven wire cloth, or with screens such as for instance wire screens or welding screens, or instead said walls have holes such as for instance fine punched holes or drilled holes or slot milled holes or beam perforated holes (laser perforation or electron beam perforation), being the width of the openings of slots, or the diameter in the case of holes, not greater than 0.1 mm and preferably not lower than 0.02 mm. The slots length is not critical. For example said length can range from 30 cm to 2 meters, depending on the volume of the tomato juice to be treated. When the separation solid liquid apparatus has a bottom wall, this is preferably made of a plate without slots or holes.


Preferably the separator has a cylindrical section. The separator is furthermore equipped with a device for mechanical stirring. Stirring must be very slow, the angular speed is generally from 1 rpm to 20 rpm, preferably from 2 rpm to 10 rpm, the device being of a shape such that the solid is conveyed in the separator central zone (with reference to the longitudinal axis). It has been found that said stirring prevents the solid from adhering and accumulating on the separator walls, so that no impermeable layer formation occurs in the separator during the processing.


The distance between the separator walls and the stirrer blades is from 0.5 to 2 cm.


According to the present invention process the separator is charged with the tomato juice, obtained for example by tomato fruit trituration and seed and peel separation, or charged with tomato passatas, obtained for example as the tomato juice but operating at lower temperature during the centrifugation step. The tomato juices have been previously treated according to known processes, for example by “hot break”, “cold break” processes, or by applying high pressures, for example of the order of 5,000-7,000 Atm (5.06×102 MPa-7.09×102 MPa), to inactivate enzymes.


The tomato mass to be filtered can optionally be protected during the process by operating in an atmosphere of an inert gas, e.g. nitrogen. In this way it is avoided the contact of the tomato mass with oxygen in the presence of the light. This optional step is requested in case the temperature, for unforeseen events, during the process results higher than 25° C. By operating in this way no lycopene losses occur.


The process ends when in the separator there is a compact mass which does not separate any longer tomato juice serum.


By operating with the separation process according to the present invention carotenoids, lycopene comprised, remain in the mass which separated from the liquid part or tomato serum.


Unexpectedly and surprisingly with the invention process there is no clogging of the separator walls having openings or holes of the above said sizes since unexpectedly and surprisingly a compact mass is formed, as said above. Said result is unforeseen since one would expect the formation of a product layer adhering to the walls, substantially impermeable.


Said mass, formed during the invention process, is compact and does not adhere to the walls whereby it is easily recovered from the separator. The invention process has a very high productivity since there is no clogging on the walls with consequent process downtime for the separator cleaning.


The tomato juice serum percolated from the separator walls, containing a large part of the soluble solids of tomato juice, is generally recovered by lyophilization or cold concentration with known methods, for example cryoconcentration.


Another method to obtain the invention tomato products is to use a concave- or flat-shaped sieve, having holes diameter or slots width not greater than 0.1 mm, preferably not lower than 0.02 mm, wherein it is transferred the starting tomato juice, obtained as above. The juice into the sieve is kept under an oscillatory motion until a compact mass, as above said, is formed, which does not separate any longer the serum. The compact mass is easily recovered since it does not adhere to the sieve. The temperature conditions are those indicated above for the process using a separator; preferably atmospheric pressure is used. The numbers of oscillations/minutes are those herein above reported.


A further process used to obtain the invention tomato products consists in charging the tomato juice, treated as above, on a cylinder constituted by food grade stainless steel wherein the walls have openings or slots formed for instance with woven wire cloth, or with screens such as for instance wire screens or welding screens, or instead said walls have holes such as for instance fine punched holes or drilled holes or slot milled holes or beam perforated holes (laser perforation or electron beam perforation), being the width of the openings of slots, or the diameter in the case of holes, not greater than 0.1 mm and preferably not lower than 0.02 mm. Said cylinder has inside a stirrer in the form of an Archimedean screw revolving free in the fixed cylinder, or consists simply of a rotating tube wound helically about a cylindrical axis. Rotation of the moving part must be very slow, generally at an angular speed of 2-10 rpm. The process is preferably carried out under the temperature and pressure operating conditions above described for the process in which a separator is used.


Preferably the cylinder is in a horizontal position, and has a diameter which can for example range from cm and 1 meter, length from 2 meters to 20 meters. Preferably from 2 meters to 5 meters for apparatus working in a discontinuos way. Preferably about 20 meters for apparatuses working in a continuous way.


For discontinuous apparatuses the juice is let pass in the cylinder, with several recycling steps, until a compact mass is formed and there is no separation of tomato serum any longer.


When treating tomato suspensions obtained from partially ripened tomatoes, the slots width and the holes diameter of the separation liquid solid apparatus can reach also values not higher than 0.5 mm, preferably about 0.3 mm.


The apparatus for obtaining the tomato products of the present invention, comprising the filtering nets, can be of plastic material or of metal, steel included. Preferably the apparatus is made of food grade inox steel. When a plastic material is used, it can be cited propylene homopolymers or copolymers, ethylene homopolymers or copolymers, etc.


The serum is recovered as above indicated. As said, the separated serum contains a great part of the water soluble solids contained in the tomato juice. The Applicant has found that the organoleptic properties (taste) of the invention tomato products can be modified by adding water soluble solids from lyophilized or concentrated serum. Generally serum is cold concentrated by cryoconcentration, or can be treated with the other described methods.


With the above processes tomato products are obtained according to the invention having a content of water insoluble solids in the dry residue even up to 70%.


Generally, with the invention process are obtained tomato products having a content of water insoluble solids and of water soluble solids in the dry residue in the following ranges:

    • water insoluble solids: 30%-70%,
    • water soluble solids: 70%-30%.


To said tomato products it is possible to add lyophilized, or cryoconcentrated serum, or concentrated as described, to further improve the taste. It is thus possible to obtain, for example, tomato products having a lower content of water insoluble solids in the dry residue, generally comprised between 18 and 30%.


The tomato products according to the present invention allow to maintain the organoleptic and nutritional properties of the fresh tomato. Therefore in the present invention products there are no variations of the organoleptic properties, such for example it happens in the tomato products of the prior art wherein it is noticeable, for instance, a caramel taste and/or a cooking (“cotto”) smell.


Also the nutritional properties remain unaltered, since there is no alteration of the carotenoids, in particular of the lycopene, as it occurs in the commercial products.


The tomato compositions of the present invention can have a tomato taste that could result, depending on the water soluble/insoluble solids of the composition, more or less strong than the tomato sauces available on the market. The point to be stressed is that the taste of the commercial tomato sauces depends on the variety of tomatoes used and on their ripeness. Unexpectedly with the process invention it is possible to have tomato sauces having a constant taste from one production batch to another. This is a remarkable result from a commercial point of view. The Applicant has found that this taste variation depends on the ratio between soluble and insoluble compounds present in the tomato compositions. The present invention makes also possible to produce tomato products which more favourably meet the personal consumer's taste, since the ratio water soluble/insoluble solids, as said, can be therein varied.


The following not limiting Examples illustrate the invention.


EXAMPLES
Characterization Methods
Determination of the Saucing Power of a Tomato Product According to the Invention

Materials:

    • tomato product to be tested,
    • vegetable oil, preferably olive oil,
    • full length, not broken spaghetti No. 12 De Cecco trade mark with cooking time indicated by the manufacturer 12 minutes,
    • sea salt.


90 g of tomato product to be tested and 10 g of vegetable oil (condiment total weight: 100 g) are introduced into a vessel, preferably a plastic vessel, previously weighed and having 1 liter capacity.


70 g of spaghetti are cooked apart, in 1 liter of water containing 5 g of sea salt, for the time indicated on the package. At the end the cooked spaghetti are strained until no drops form any longer.


The cooked spaghetti is added to the condiment previously prepared in the plastic vessel and by a fork they are carefully mixed slowly for 5 minutes. The vessel is then put on a boiling water bain-marie for 5 minutes, without mixing spaghetti. From the vessel with a fork the spaghetti are taken in a number of 2-3 at a time and without shaking them, it is let fall in the vessel the condiment which tends to immediately detach.


In the plastic vessel it remains the condiment which has not adhered to the spaghetti. Lastly the plastic vessel is weighed and in this way it is determined the condiment weight which has not adhered to the pasta. The difference to 100 (initial condiment weight) gives the amount which has remained attached to the pasta (QA).


The saucing power is defined on the basis of the following equation:







Saucing





power

=



Q
A

×
10

100





Determination of the Dry Residue: Total Solids


The total dry residue is determined in the tomato juice using a vacuum stove as described in Journal Officiel des Communitées Européenes 7.6.86 L.153 pages 5-6.


Determination of Water Soluble Solids


The determination of water soluble solids has been carried out using a refractometer (Brix degrees), with the method based on Journal Officiel des Communitées Européenes 7.6.86 L.153 pages 6-9.


Determination of Water Insoluble Solids


The determination of water insoluble solids has been carried out by calculating the weight difference between the dry residue and that of the water soluble solids (Brix value), as reported in “Tomato Production, Processing and Technology 3rd Ed.” by W. A. Gould, CTI Publications, Inc., 1992 page 317.


Determination of the Rheometric Properties


In a Dynamic stress Rheometer SR-200 (Rheometric Scientific) the shear stress (Pa) with respect to the speed gradient (s−1) has been measured.


Example 1
Preparation of a Tomato Product (Ro2 Code)

The processing is carried out under sterile conditions.


10 Kg of tomato juice (free from seeds and peels), previously hot break to inactivate enzymes, are portion-wise transferred in a 10 litre separator equipped with stirrer. The separator is constituted by food grade stainless steel wherein the walls are constituted by woven wire cloth having a hole diameter of 0.5 mm, the bottom wall of the separator does not have slots or holes. The stirring in the separator is such that the solid is conveyed towards the central zone of the separator. The distance between the separator walls and the stirrer blades is of 0.5 cm. The stirring (3 rpm) is started and it is operated at a temperature in the range 5° C.-10° C.


After 3 hours stirring speed is reduced to 2 rpm. It is noticed that the mass in the separator has become compact and homogeneous. After 7 hours from the process beginning, no serum is any longer separated from the mass in the separator. Stirring is interrupted and the obtained product is discharged. 2.7 kg of tomato product Ro2 are recovered.


The product analysis is the following:

    • dry residue: 10% by weight;
    • water: 90%;
    • water soluble solids: 50% by weight with respect to the dry residue.
    • water insoluble solids: 50% by weight with respect to the dry residue.


The rheological properties of the product Ro2 have been measured in comparison with the following commercial products: triple concentrate (TC), double concentate (DC), concentrate (C), tomato passatas.


The shear stress/speed gradient (s−1) trend is reported in the following figures and the respective data in the Tables as indicated hereinunder:

    • Ro2, TC: FIG. 1 and Tables 1 (Ro2) and 3 (TC);
    • TC, DC: FIG. 2 and Tables 4 (DC) and 3 (TC);
    • TC, C: FIG. 3 and Tables 5 (C) and 3 (TC);
    • Tomato passatas: FIG. 4 and Table 6.


The Figures show that Ro2 has rheological properties that overlap to those of TC and are superior to those, respectively, of DC, C and tomato passatas.


Example 2
Preparation of a Tomato Product (Ro1) by Adding to the Product Ro2 Lyophilized Tomato Serum

980 g of the product Ro2, to which 20 g of lyophilized tomato serum are then added, are transferred into a vessel equipped with stirrer, in a sterile environment. It is stirred at 8 rpm at a temperature in the range 5° C.-10° C., until a homogeneous mass is obtained (product Ro1).


It is found that Ro1 has a dry residue of 11.8% by weight, water 88.2%, the water soluble solids are 58.5% and the water insoluble solids are 41.5% of the dry residue.


The rheological properties (shear stress/speed gradient (s−1) trend) of the product Ro1 have been measured and compared with the same commercial products used for obtaining Ro2.


The Ro1 trend is reported in FIG. 1 and the data with which the rheogram has been plotted are reported in Table 2. It can be repeated the same conclusions above mentioned for Ro2.


Example 3
Preparation of Compositions of the Invention Tomato Products with Vegetable Oil

A composition of tomato product Ro1 and olive oil was prepared. In a vessel, under stirring at 200 rpm, olive oil was slowly added, at small portions, to the product Ro1, leaving the mass under stirring for 5 minutes. The englobed oil amount is 15% by weight. The product was recovered and let stand one month at +4° C., in a closed vessel, without showing substantial oil separation.


Example 4
Preparation of Compositions of the Invention Tomato Products with Vegetable Oil

The Example 3 was repeated but adding all at once, slowly, to Ro1 an oil amount equal to 15% by weight with respect to the Ro1 weight. After leaving the mass under stirring for further 5 minutes from the end of the addition, the product was recovered. The same results of the Example 3 are obtained.


Example 5
Preparation of Composition of the Invention Tomato Product Ro2 with Food Fat Solid at Room Temperature

The Example 3 was repeated but using a solid fat (butter), previously heated at 40° C. and then mixed with the tomato product Ro2 for 5 minutes (200 rpm) after the butter addition. The total added butter corresponds to 20% by weight of Ro1. After cooling a solid mass was obtained, from which serum does not separate, even after 20 days of storage in refrigerator at 5° C.


Example 6
Preparation of a Composition of the Invention Tomato Products Ro1 with Food Fat Solid at Room Temperature

Example 5 was repeated but adding a total amount of butter of 300% by weight with respect to the tomato product Ro1, leaving then under stirring (200 rpm) for 15 minutes after the addition to homogenize the mass. After cooling a solid mass was obtained, from which serum does not separate, even after 40 days of storage in a refrigerator at 5° C.


Example 7
Preparation of a Composition of Ro1 with Soft-Grain Cheese

In a vessel, under stirring (200 rpm), to the product Ro1 different amounts of Philadelphia® Light cheese have been added. It has been found that this soft cheese is miscible in all the ratios with the product Ro1. In particular compositions having the following weight ratios Ro1/cheese: 50/50, 75/25, 25/75 have been prepared.


Example 8
Preparation of a Composition of Ro2 with Hard-Grain, Grated Cheese and a Food Fat Solid at Room Temperature

In a vessel, under stirring (200 rpm), to 30 g of tomato product Ro2, 30 g of butter heated to 40° C. and 30 g of grated Parmesan cheese have been added. After 15 minutes of stirring the mass becomes homogeneous. At this point it is cooled to room temperature. A solid mass is obtained from which serum does not separate, even after 20 days of storage in a refrigerator at the temperature of 5° C.


Example 9
Preparation of a Composition of Ro1 with Soft-Grain Cheese

In a vessel, under stirring (200 rpm), to the product Ro1 different amounts of Jocca® cheese have been added. It has been found that this soft cheese is miscible in all ratios, as that used in the Example 7, with the product Ro1. Compositions having the same weight ratios Ro1/cheese as those of the Example 7: 50/50, 75/25, 25/75, have been prepared.


Example 10
Evaluation of the Saucing Power of the Invention Tomato Products in Comparison with Commercial Products

The method indicated in the characterization methods for the determination of the saucing power has been used, for the invention products Ro1 and Ro2 and the comparative commercial products triple tomato concentrate (TC), double concentrate (DC), concentrate (C) and tomato passatas.


The results are reported in Table 7. The data show that Ro2 shows the best combination of saucing power and of organoleptic properties (taste). In any case the invention products show an improved saucing power combined with improved organoleptic properties with respect to the commercial tomato products.






















TABLE 1





Stress
Ela
Rate
Torque
Time
Temp
Strain(I)
SS
SS
theta
G′
G″
Posi-
stress(I)


Pa
Pa · s
s−1
N-m
s
° C.
%
Time s
Slope
rad
Pa
Pa
tion
Pa




























20.0000
1.48E+05
2.05E−04
5.03E−04
0
21.8
2.20E−01
30.0001
0.33458
0.22E−05
13184.1
0.00E+00
7
20.0989


33.6594
1.39E+08
2.42E−05
5.84E−04
29
21.8
4.14E−02
30.0001
0.03283
1.60E−05
81360.2
0.00E+00
7
33.6694


37.7664
DIV0
0
6.33E−04
59
21.8
0.00E+00
30.0001
0
0

0.00E+00
7
37.7664


42.3740
1.24E+08
3.41E−05
7.10E−04
89
21.8
0.21E−02
30.0001
0.04133
2.51E−05
68284.3
0.00E+00
7
42.3748


47.6461
1.43E+08
3.33E−05
7.97E−04
120
21.8
6.17E−02
30.0001
0.04017
2.09E−05
91939.5
0.00E+00
7
47.6461


53.3465
1.28E+08
4.10E−05
8.94E−04
150
21.8
6.21E−02
30.0001
0.0527
2.51E−05
85964.9
0.00E+00
7
53.3485


50.0557
1.20E+06
4.89E−05
0.001
180
21.8
6.21E−02
30.0001
0.05300
2.51E−05
98454.2
0.00E+00
7
59.8567


67.1692
1.02E+06
6.55E−05
0.00113
210
21.8
7.24E−02
30.0001
0.08091
2.93E−05
92782.9
0.00E+00
7
67.1592


75.3539
1.00E+06
3.80E−05
0.00126
240
21.8
1.14E−01
30.0001
0.0806
4.61E−05
66233.8
0.00E+00
7
75.3530


84.6485
1.88E+08
4.49E−05
0.00142
271
21.8
1.03E−01
30.0001
0.07438
4.19E−05
81747.1
0.00E+00
7
84.6485


94.085
2.28E+08
4.20E−05
0.00159
301
21.8
1.45E−01
30.0001
0.00772
5.86E−05
65515.5
0.00E+00
7
94.886


106.44
2.25E+08
4.73E−05
0.00178
331
21.8
1.07E−01
30.0001
0.01420
7.98E−05
54165
0.00E+00
7
106.44


110.420
2.40E+08
4.98E−05
0.002
360
21.8
2.30E−01
30.0001
0.01102
9.03E−05
50204.7
0.00E+00
7
110.420


134
2.23E+08
8.02E−05
0.00225
390
21.8
3.00E−01
30.0001
0.00914
1.21E−04
44676
0.00E+00
7
134


150.351
1.01E+08
8.33E−05
0.00252
421
21.8
4.03E−01
30.0001
0.01243
1.63E−04
37274.1
0.00E+00
7
150.351


168.698
1.55E+08
1.09E−04
0.00203
451
21.8
5.79E−01
30.0001
0.01197
2.35E−04
20126.2
0.00E+00
7
160.690


109.20
1.04E+06
1.03E−04
0.00317
401
21.8
9.31E−01
30.0001
0.04403
3.77E−04
20334.3
0.00E+00
7
189.20


212.376
0.37E+05
3.34E−04
0.00358
511
21.8
1.83E+00
30.0001
0.021
7.41E−04
11601.1
0.00E+00
7
212.376


230.20
1.97E+05
0.00121
0.00399
541
21.8
5.32E+00
30.0001
0.06067
0.00215
4482.39
0.00E+00
7
230.20


267.360
4825.01
0.0554
0.00448
572
21.8
0.29E+01
30.0001
0.02101
0.03764
207.677
0.00E+00
7
207.366


299.000
1019.57
0.29423
0.00503
602
21.8
8.84E+02
30.0001
0.00307
0.26874
45.21
0.00E+00
5
200.089


336.693
451.738
0.74511
0.00564
632
21.8
1.84E+03
30.0001
0.00274
0.74675
10.2798
0.00E+00
40
336.693


377.66
102.359
2.07007
0.00633
662
21.8
4.65E+03
30.0001
0.0070
1.88457
8.11608
0.00E+00
33
377.88
















TABLE 2





RO 1 test: 1























Stress
Ela
Rate
Torque
Time
Temp
Strain(I)
SS
SS


Pa
Pa · s
s−1
N-m
s
° C.
%
Time s
Slope





20.0989
1.78E+05
1.60E−04
5.03E−04
0
21.8
2.28E−01
30.0001
0.32238


83.6504
DIV0
0
5.64E−04
29
21.8
0.00E+00
30.0001
0


37.7664
DIV0
0
6.33E−04
69
21.8
0.00E+00
30.0001
0


42.3748
DIV0
0
7.10E−04
90
21.8
0.00E+00
30.0001
0


47.5461
1.55E+06
3.07E−05
7.97E−04
120
21.8
7.24E−02
30.0001
0.03246


53.3485
1.73E+06
3.08E−05
8.94E−04
150
21.8
7.24E−02
30.0001
0.03209


59.8557
1.70E+06
3.63E−05
0.001
180
21.8
7.24E−02
30.0001
0.03755


67.1502
1.68E+06
4.06E−05
0.00113
210
21.8
8.27E−02
30.0001
0.03962


75.3539
1.10E+06
6.36E−05
0.00126
241
21.8
8.27E−02
30.0001
0.06750


84.5405
1.23E+08
6.85E−05
0.00142
271
21.8
9.31E−02
30.0001
0.06750


94.865
2.90E+06
3.27E−05
0.00169
301
21.8
1.24E−01
30.0001
0.08709


106.44
1.82E+00
5.84E−05
0.00178
330
21.8
1.24E−01
30.0001
0.1288


110.428
2.77E+06
4.30E−05
0.002
360
21.8
1.97E−01
30.0001
0.01397


134
2.67E+06
5.02E−05
0.00225
391
21.8
2.48E−01
30.0001
0.00372


150.351
2.54E+06
5.91E−05
0.00252
421
21.8
2.50E−01
30.0001
0.01432


168.898
2.52E+06
5.70E−05
0.00283
451
21.8
3.62E−01
30.0001
0.00961


189.20
2.49E+06
7.60E−05
0.00317
481
21.8
4.34E−01
30.0001
0.01458


212.376
1.89E+06
1.12E−04
0.00356
511
21.8
5.90E−01
30.0001
0.01287


238.29
1.29E+06
1.84E−04
0.00399
542
21.8
9.72E−01
30.0001
0.01109


207.366
4.43E+05
6.03E−04
0.00448
572
21.8
2.93E+00
30.0001
6.38E−07


299.989
9453.04
0.03173
0.00583
602
21.8
5.38E+01
30.0001
0.03555


836.505
207.715
1.62042
0.00581
632
21.8
2.14E+03
30.0001
0.02396

















Stress
theta
G′
G″

stress(I)



Pa
rad
Pa
Pa
Position
Pa







20.0989
0.22E−05
13184.1
0.00E+00
1.08E−38
29.9989



83.6504
0

0.00E+00
1.05E−38
33.8694



37.7664
0

0.00E+00
1.06E−38
37.7864



42.3748
0

0.00E+00
1.06E−38
42.3746



47.5461
2.93E−05
65671.1
0.00E+00
1.06E−38
47.5461



53.3485
2.93E−05
73884.2
0.00E+00
1.06E−38
53.3465



59.8557
2.93E−05
82675
0.00E+00
1.06E−38
59.8557



67.1502
3.35E−05
81167.5
0.00E+00
1.06E−38
67.1502



75.3539
3.35E−05
91071.4
0.00E+00
1.06E−38
75.3539



84.5405
3.77E−05
90830.1
0.00E+00
1.06E−38
84.5485



94.865 
6.03E−05
78434.8
0.00E+00
1.06E−38
94.865



106.44  
5.03E−05
85751.2
0.00E+00
1.06E−38
108.44



110.428 
7.96E−05
60774.1
0.00E+00
1.06E−38
119.428



134   
1.01E−04
53983.5
0.00E+00
1.06E−38
134



150.351 
1.05E−04
68147.7
0.00E+00
1.06E−38
150.351



168.898 
1.47E−04
46602
0.00E+00
0
168.898



189.20  
1.76E−04
43573.6
0.00E+00
0
189.28



212.376 
2.39E−04
36024.5
0.00E+00
0
212.378



238.29  
3.94E−04
24510.1
0.00E+00
0
238.20



207.366 
0.00119
9134.52
0.00E+00
0
207.366



299.989 
0.02181
557.144
0.00E+00
0
299.989



836.505 
0.06562
15.7479
0.00E+00
0
338.585

















TABLE 3







Tomato Triple Concentrate



















Stress
Ela
Rate
Torque
time
Temp
Strain(I)
SS

theta

N1



Pa
Pa · s
s−1
N-m
s
° C.
%
Time s
SS Slope
rad
Position
Pa
NormalForce N






















4.99982
DIV0
0.00E+00
0.38E−05
0
20
0.00E+00
30.0001
0
0
1
0
0


6.60989
DIV0
0.00E+00
9.40E−05
29
20
0.00E+00
30.0001
0
0
1
0
0


6.2944
DIV0
0.00E+00
1.05E−04
80
20
0.00E+00
30.0001
0
0
1
0
0


7.06244
DIV0
0.00E+00
1.18E−04
90
20
0.00E+00
30.0001
0
0
1
0
0


7.92410
DIV0
0.00E+00
1.33E−04
121
20
0.00E+00
30.0001
0
0
1
0
0


8.89108
DIV0
0.00E+00
1.49E−04
151
20
0.00E+00
30.0001
0
0
1
0
0


9.97595
DIV0
0.00E+00
1.87E−04
180
20
0.00E+00
30.0001
0
0
1
0
0


11.1932
DIV0
0.00E+00
1.88E−04
211
20
0.00E+00
30.0001
0
0
1
0
0


12.559
DIV0
0.00E+00
2.10E−04
241
20
0.00E+00
30.0001
0
0
1
0
0


14.0014
DIV0
0.00E+00
2.36E−04
272
20
0.00E+00
30.0001
0
0
1
0
0


15.0108
DIV0
0.00E+00
2.65E−04
302
20
0.00E+00
30.0001
0
0
1
0
0


17.74
DIV0
0.00E+00
2.97E−04
331
20
0.00E+00
30.0001
0
0
1
0
0


19.9046
DIV0
0.00E+00
3.04E−04
362
20
0.00E+00
30.0001
0
0
1
0
0


22.3334
DIV0
0.00E+00
3.74E−04
392
20
0.00E+00
30.0001
0
0
1
0
0


25.0585
DIV0
0.00E+00
4.20E−04
423
20
0.00E+00
30.0001
0
0
1
0
0


28.1181
DIV0
0.00E+00
4.71E−04
452
20
0.00E+00
30.0001
0
0
1
0
0


31.5407
DIV0
0.00E+00
5.29E−04
482
20
0.00E+00
30.0001
0
0
1
0
0


35.396
DIV0
0.00E+00
5.93E−04
513
20
0.00E+00
30.0001
0
0
1
0
0


39.715
9.81E+05
4.13E−05
8.65E−04
543
20
7.24E−02
30.0001
0.04596
2.03E−05
1
0
0


44.561
8.83E+05
5.18E−05
7.47E−04
574
10.00
7.24E−02
30.0001
0.05922
2.93E−05
1
0
0


49.9982
7.72E+05
6.40E−05
8.38E−04
603
20
8.27E−02
30.0001
0.06921
3.35E−05
1
0
0


58.0989
1.53E+06
3.68E−05
9.40E−04
633
20
1.14E−01
30.0001
0.09517
4.61E−05
1
0
0


62.944
1.48E+06
4.25E−05
0.00105
664
20
1.24E−01
30.0001
0.10560
5.03E−05
1
0
0


70.6244
1.67E+06
4.22E−05
0.00118
694
20
1.55E−01
30.0001
0.01448
6.28E−05
1
0
0


79.2418
1.88E+06
4.21E−05
0.00133
725
20
2.07E−01
30.0001
0.01343
8.38E−05
1
0
0


88.9100
1.86E+06
5.38E−05
0.00149
754
20
2.38E−01
30.0001
0.0129
9.63E−05
1
0
0


99.7596
1.90E+06
6.25E−05
0.00167
784
20
2.00E−01
30.0001
0.01318
1.17E−04
1
0
0


111.932
1.81E+06
6.06E−05
0.00180
815
20
3.52E−01
30.0001
0.0119
1.42E−04
1
0
0


125.59
1.85E+06
7.60E−05
0.0021
845
20
4.65E−01
30.0001
0.01450
1.09E−04
1
0
0


140.914
1.54E+06
0.15E−05
0.00236
878
20
5.27E−01
30.0001
0.00889
2.14E−04
1
0
0


168.108
1.18E+00
1.08E−04
0.00265
905
20
8.41E−01
30.0001
0.00884
2.80E−04
1
0
0


177.4
1.27E+06
1.40E−04
0.00297
935
20
6.69E−01
30.0001
0.00674
3.62E−04
1
0
0


100.048
7.47E+05
2.67E−04
0.00334
966
20
1.20E+00
30.0001
0.01828
5.24E−04
1
0
0


223.334
60084.3
3.80E−03
0.00374
996
20
0.01E+00
30.0001
0.03482
0.00324
1
0
0


260.606
6802.51
3.60E−02
0.0042
1026
20
0.24E+01
30.0001
0.01189
0.03744
1
0
0


281.184
2821.00
1.07E−01
0.00471
1057
20
2.93E+01
30.0001
0.00241
0.11884
0
0
0


315.407
1270.03
2.47E−01
0.00529
1087
20
8.68E+02
30.0001
0.00284
0.26955
48
0
0


353.08
0.10.007
5.71E−01
0.00503
1116
20
1.40E+03
30.0001
0.0046
0.69812
43
0
0


307.140
337.724
1.18E+00
0.00665
1146
20
3.06E+03
30.0001
0.00524
1.24068
33
0
0


446.806
167.326
2.68E+00
0.00747
1177
20
0.24E+03
30.0001
0.0074
2.52762
12
0
0


408.384
1.01203
4.02E+02
0.00835
1207
20
5.00E+05
30.0001
0.01608
205.036
40
0
0
















TABLE 4





DC test 1






















Stress
Ela
Rate
Torque

Temp

SS


Pa
Pa · s
s−1
N-m
time s
° C.
Strain(I) %
Time s





40.9982
7.53E+05
8.64E−05
8.38E−04
0
21.8
8.40E−01
30.0001


56.0989
1.09E+06
5.14E−05
9.40E−04
29
21.8
7.86E−01
30.0001


62.944
1.18E+06
5.34E−05
0.00105
59
21.8
2.07E−01
30.0001


70.6244
8.48E+05
8.33E−05
0.00118
90
21.8
2.38E−01
30.0001


79.2418
1.33E+06
6.94E−05
0.00133
120
21.8
2.38E−01
30.0001


88.9108
1.32E+06
6.75E−05
0.00149
150
21.8
3.00E−01
30.0001


99.7598
1.18E+06
8.46E−05
0.00187
180
21.8
4.03E−01
30.0001


111.032
9.08E+05
1.24E−04
0.00188
210
21.8
6.07E−01
30.0001


125.50
9.29E+05
1.35E−04
0.0021
241
21.8
7.24E−01
30.0001


140.914
6.45E+05
2.59E−04
0.00236
271
21.8
1.15E+00
30.0001


158.108
2.80E+05
5.86E−04
0.00285
301
21.8
2.40E+00
30.0001


177.4
58308.2
0.00304
0.00297
331
21.8
8.89E+00
30.0001


199.046
5094.7
0.03907
0.00334
360
21.8
7.95E+01
30.0001


223.334
1455.9
0.1534
0.00374
391
21.8
3.75E+02
30.0001


250.505
711.847
0.38202
0.0042
421
21.8
0.31E+02
30.0001


284.16
378.474
0.74288
0.00471
451
21.8
1.89E+03
30.0001


315.463
166.641
1.80307
0.00520
481
21.8
4.52E+03
30.0001


336.064
0.87151
385.61
0.00583
511
21.8
9.24E+04
30.0001


















Stress
SS
theta
G′
G″

stress(I)



Pa
Slope
rad
Pa
Pa
Position
Pa







40.9982
0.0197
3.43E−04
5895.32
0.00E+00
2
49.0982



56.0989
0.00955
7.54E−05
30133.4
0.00E+00
2
56.0989



62.944
0.00917
8.38E−05
30429.2
0.00E+00
2
62.944



70.6244
0.06719
9.63E−05
29608.8
0.00E+00
2
70.6244



79.2418
0.0172
9.63E−05
33311.4
0.00E+00
2
79.2418



88.9108
0.00631
1.21E−04
29643.1
0.00E+00
2
88.9108



99.7598
0.00977
1.83E−04
24731.8
0.00E+00
2
99.7696



111.032 
0.01481
2.05E−04
22086.4
0.00E+00
2
111.932



125.50  
0.0061
2.93E−04
17346.9
0.00E+00
2
125.59



140.914 
0.0400
4.85E−04
12274.3
0.00E+00
2
140.914



158.108 
0.06567
9.72E−04
6589.2
0.00E+00
2
158.108



177.4  
0.02847
0.0036
1994.45
0.00E+00
2
177.4



199.046 
0.01121
0.03222
260.229
0.00E+00
1
199.946



223.334 
0.00394
0.15084
59.965
0.00E+00
0
223.334



250.505 
0.00166
0.37721
26.9047
0.00E+00
47
250.686



284.16  
0.00522
0.76659
14.8541
0.00E+00
41
281.16



315.463 
0.01059
1.8305
6.97965
0.00E+00
26
316.483



336.064 
0.22919
37.4415
0.36352
0.00E+00
38
338.064

















TABLE 5





C test 1






















Stress
Ela
Rate
Torque

Temp




Pa
Pa · s
s−1
N-m
time s
° C.
Strain(I) %
SS Time s





9.99964
1.70E+05
5.58E−05
1.60E−04
0
21.8
6.62E−01
30.0001


11.2198
3.38E+05
3.32E−05
1.88E−04
30
21.8
1.14E−01
30.0001


12.5888
1.29E+05
9.76E−05
2.11E−04
60
21.8
1.55E−01
30.0001


14.1240
3.64E+05
3.09E−05
2.37E−04
91
21.8
1.24E−01
30.0001


15.8484
4.36E+05
3.83E−05
2.66E−04
121
21.8
1.55E−01
30.0001


17.7022
2.96E+05
8.02E−05
2.08E−04
151
21.8
1.76E−01
30.0001


19.9519
3.52E+05
5.67E−05
3.34E−04
161
21.8
2.07E−01
30.0001


22.3864
3.66E+05
6.12E−05
3.76E−04
211
21.8
3.21E−01
30.0001


25.118
2.41E+05
1.04E−04
4.21E−04
241
21.8
5.07E−01
30.0001


28.1828
59865
4.71E−04
4.72E−04
271
21.8
2.20E+00
30.0001


31.6217
26718.5
0.00110
5.30E−04
301
21.8
4.78E+00
30.0001


35.4802
1395.92
0.02542
5.94E−04
331
21.8
5.19E+01
30.0001


39.8091
333.057
0.11953
6.67E−04
361
21.8
2.98E+02
30.0001


44.6664
136.674
0.32601
7.48E−04
392
21.8
0.57E+02
30.0001


50.1159
68.4756
0.73188
0.40E−04
422
21.8
1.91E+03
30.0001


56.2312
38.277
1.56005
0.42E−04
452
21.8
3.94E+03
30.0001


63.0904
10.0316
3.16534
0.00108
482
21.8
7.90E+03
30.0001


70.7595
7.04429
0.02061
0.00119
512
21.8
1.99E+04
30.0001


70.3276
2.13192
37.2094
0.00133
543
21.8
7.17E+04
30.0001


89.2037
1.00677
81.3328
0.00149
573
21.8
2.22E+05
30.0001


100.243
0.80728
143.787
0.00168
602
21.8
4.08E+05
30.0001


112.38
0.4634
247.881
0.00188
632
21.8
8.70E+05
30.0001


128.18
0.33550
376.004
0.00211
663
21.8
1.07E+06
30.0001


141.308
0.2401
667.203
0.00237
683
21.8
1.65E+08
30.0001


158.346
0.10264
821.993
0.00265
723
21.8
2.35E+06
30.0001


177.42
0.16473
1077.01
0.00297
754
21.8
3.19E+06
30.0001


199.079
0.1382
1440.49
0.00334
784
21.8
4.11E+06
30.0001


223.337
0.11941
1870.29
0.00374
814
21.8
5.28E+06
30.0001


251.339
0.11326
2210.04
0.00421
845
21.8
6.74E+06
30.0001


202.130
0.10672
2643.73
0.00473
875
21.8
7.78E+06
30.0001


316.874
0.09406
3320.03
0.00529
905
21.8
9.48E+06
30.0001


















Stress

theta
G′
G″

stress(I)



Pa
SS Slope
rad
Pa
Pa
Position
Pa







 9.99964
0.02358
2.68E−04
1510.67
0.00E+00
28
9.99964



11.2198
0.07678
4.61E−05
9881.06
0.00E+00
28
11.2198



12.5888
0.0004
6.28E−05
8114.48
0.00E+00
28
12.5888



14.1240
0.11779
5.03E−05
11380.7
0.00E+00
28
14.1240



15.8484
0.01298
6.28E−05
10215.5
0.00E+00
28
15.8484



17.7022
0.0277
7.12E−05
10113.5
0.00E+00
28
17.7022



19.9519
0.02512
8.38E−05
9646.41
0.00E+00
28
19.9519



22.3864
0.00972
1.30E−04
8982.15
0.00E+00
28
22.3864



25.118
0.00409
2.05E−04
4956.27
0.00E+00
28
25.118



28.1828
0.11241
8.92E−04
1279.3
0.00E+00
28
28.1828



31.6217
0.03648
0.00194
661.773
0.00E+00
28
31.6217



35.4802
0.01768
0.02104
68.3086
0.00E+00
28
35.4802



39.8091
0.00876
0.12082
13.366
0.00E+00
27
39.8091



44.6664
0.00489
0.34692
6.21437
0.00E+00
24
44.6664



50.1159
0.00837
0.77453
2.62055
0.00E+00
18
50.1159



56.2312
0.00335
1.69654
1.42733
0.00E+00
5
56.2312



63.0904
0.00403
3.23394
0.79011
0.00E+00
28
63.0904



70.7595
0.01829
8.04345
0.35829
0.00E+00
12
70.7595



70.3276
0.01495
20.0404
0.11083
0.00E+00
21
70.3276



89.2037
0.01263
90.0674
0.04011
0.00E+00
31
89.2037



100.243 
0.01538
165.166
0.02458
0.00E+00
26
100.243



112.38  
0.00514
271.461
0.01677
0.00E+00
47
112.30



128.18  
0.00542
433.814
0.01178
0.00E+00
33
128.18



141.308 
0.00337
469.478
0.00855
0.00E+00
31
141.308



158.346 
0.0017
953.198
0.00673
0.00E+00
38
158.346



177.42  
0.00260
1293.01
0.00566
0.00E+00
4
177.42



199.079 
0.00196
1664.01
0.00486
0.00E+00
3
199.079



223.337 
0.00135
2136.97
0.00423
0.00E+00
29
223.337



251.339 
3.04E−04
2729.09
0.00373
0.00E+00
34
251.339



202.130 
5.49E−04
3152.6
0.00362
0.00E+00
31
202.130



316.874 
5.93E−04
3840.24
0.00333
0.00E+00
45
316.874





























TABLE 6











Rate
















N1





Pa



s−1
N m



° C.

(I) %

SS
SS Slope
rad
Position
Pa
N



























0.68000
34728.3
5.385E−08
7.05E−06
30
20
0.0055007
30
0.01036
2.78263E−00
31
0
0


0.82044
XDIV/01
0
7.01E−08
50
20
0
30
0
0
31
0
0


0.70634
27410.7
0.500E−08
8.076E−06
00
20
0.0027953
30
0.0140433
1.39827E−06
31
0
0


0.7924387
21650.36
3.423E−06
0.058E−06
121
20
0.0279057
30
0.00843
1.30627E−05
31
0
0


0.8001087
10586.36
3.070E−06
1.117E−06
161
20
0.0111757
30
0.1018433
6.58507E−06
31
0
0


0.0078
XDIVXII
0
1.264E−05
181
20
0
30
0
0
31
0
0


1.11932
XDIV/01
0
1.407E−05
211
20
0
30
0
0
31
0
0


1.2558933
6142.0
8.816E−06
1.670E−05
241
20
0.0139027
30
0.0882033
0.00133E−06
31
0
0


1.40914
28574.8
1.0446E−06 
1.771E−05
271
20
0.011160
30
0.0103433
0.000005685
31
0
0


1.56105
XDIV/01
0
1.087E−05
302
20
0
30
0
0
31
0
0


1.774
XDIV/01
0
2.220E−05
332
20
0
30
0
0
31
0
0


1.9904867
14785
4.487E−05
2.501E−06
362
20
0.04103
30
0.000387
0.000020044
31
0
0


2.23334
80285.5
1.871E−06
2.867E−05
392
20
0.0303223
30
0.0232807
1.81517E−06
31
0
0


2.60565
87916.3
2.860E−05
3.140E−05
423
20
0.050043
30
0.301333
0.00020322
31
0
0


2.81181
06002.2
4.200E−06
3.433E−05
463
20
0.087021
30
0.0512333
0.00003351
31
0
0


3.15487
87012.707
3.776E−06
3.084E−05
483
20
0.083778
30
0.00326
0.000041888
31
0
0


3.6300
124813.33
2.881E−06
4.448E−05
513
20
0.1177133
30
0.00136
5.55603E−05
31
0
0


3.0715
00550.1
6.714E−06
4.001E−05
543
20
0.1308333
30
0.04377
0.000088417
31
0
0


4.1680987
101738.83
4.020E−05
6.0E−05
573
20
0.1703687
30
0.02501
0.51717E−05
31
0
0


4.00982
90181.133
6.130E−05
0.289E−05
604
20
0.2178267
30
0.0086167
0.00010801
31
0
0


5.00980
11155.067
8.055E−05
7.05E−05
634
20
0.28205
30
0.0148378
0.000141023
31
0
0


0.2044
81407.087
0.0001204
7.91E−05
664
20
0.4210833
30
0.0127087
0.000210037
31
0
0


7.00244
57415.233
0.0001246
8.876E−05
684
20
0.7511307
30
0.0345933
0.000376607
31
0
0


7.02418
34778.807
0.0002340
9.950E−05
725
20
1.0000987
30
0.0201167
0.000504053
31
0
0


0.8910833
21230.2
0.0004212
0.0001117
766
20
1.7000333
30
0.0456267
0.000895003
31
0
0


9.0700233
12228.87
0.000800
0.0001254
786
20
3.0050807
30
0.2000367
0.001053339
31
0
0


11.193233
5387.07
0.0021313
0.0001407
816
20
0.6060333
30
0.1100007
0.0040
31
0
0


12.558887
500.45207
0.0288107
0.0001578
845
20
01.335333
30
0.0287387
0.030073333
31
0
0


14.001233
111.66037
0.1260233
0.0001771
876
20
316.60333
30
0.0003167
0.167863333
30
0
0


15.010557
60.501287
0.2804033
0.0001087
908
20
707.70
30
0.0000287
0.3830
43
0
0


17.7307
35.640233
0.5004387
0.0002229
930
20
1404.8
30
0.0043067
0.702420867
37
0
0


19.004
24.290033
0.82164
0.0002601
966
20
2317.7583
30
0.00374
1.168883333
28
0
0


22.3332
17.133133
1.3038333
0.0002606
996
20
3009.0333
30
0.0040233
1.64051
13
0
0


25.067567
12.1413
2.0886
0.00031411
1027
20
6830.7333
30
0.0032907
2.914306667
39
0
0


26.116
8.8815333
3.1796
0.0003433
1057
20
9000.0
30
0.0028333
4.50031
10
0
0


31.6400
0.6947467
4.0012333
0.0003004
1087
20
13010
30
0.00403
0.95467
28
0
0


36.303
4.7740233
7.4010007
0.0004446
1118
20
21922
30
0.0020687
10.00600867
24
0
0


80.7122
3.2612287
12.467007
0.000400
1148
20
34330.333
30
0.00643
17.100
33
0
0


14.430007
1.0027093
23.437333
0.0005800
1177
20
88407
30
0.01064
30.24520807
18
0
0






indicates data missing or illegible when filed














TABLE 7







Test of the saucing power and organoleptic properties on the invention products


Ro1 and Ro2 and on commercial tomato products: triple concentrate,


double concentrate, concentrate and tomato passatas.











Condiment attached





to the pasta

Organoleptic properties


Product
(g)
Saucing power
(taste, smell)













Ro2
88.0
8.8
delicate taste of fresh tomato,


(Ex. 1)


fresh tomato smell


Ro1
97.8
9.8
very good taste and fresh tomato


(Ex. 2)


smell


triple concentrate
70.0
7
caramel, bitter taste, the tomato is not


(TC)


recognized; cooking (“cotto”) smell


double concentrate
65.0
6.5
caramel taste, the tomato is not


(DC)


recognized; cooking (“cotto”)





smell.


concentrate (C)
62.0
6.2
very sweet taste, the tomato is





not recognized; tomato smell


tomato passatas'
40.0
4
boiled pasta taste, very light





tomato smell








Claims
  • 1. A process for the separation of the liquid (tomato juice serum) from a tomato suspension by using a separation solid-liquid apparatus wherein the suspension to be filtered is maintained under stirring at an angular speed from 1 rpm to 20 rpm, preferably from 2 rpm to 10 rpm, the stirrer being of a shape to convey the suspension toward the central axis of the apparatus, or there is not a stirrer and it is the apparatus that rotates.
  • 2. A process according to claim 1 wherein the apparatus for separating the liquid from a tomato suspension is a sieve maintained under an oscillating motion, preferably under a nutational motion, the oscillations per minute being from 1 to 20 oscillations/min, preferably from 2 to 10 oscillations/min.
  • 3. A process according to claim 1, wherein sterile conditions are used or the final tomato product undergoes a sterilization process.
  • 4. A process according to claim 1, wherein it is operated at temperatures in the range 5EC-25EC, preferably 10EC-15EC, at atmospheric pressure, or using pressures slightly higher than that atmospheric, from 760 mm Hg (0.101 MPa) up to 900 mm Hg (0.120 MPa) or by applying pressures slightly lower than the atmospheric pressure, down to 450 mm Hg (0.06 MPa).
  • 5. A process according to claim 1, wherein it is used a separation solid liquid apparatus constituted of a vessel having walls with slots or with holes; wherein the width of the slots or the diameter of holes is not greater than 0.1 mm and preferably not smaller than 0.02 mm, the slot length ranging from 30 cm to 2 meters, said vessel having a cylindrical section, the separator equipped with a mechanical stirrer, the distance between the separator walls and the stirrer blades is from 0.5 to 2 cm.
  • 6. A process according to claim 2, wherein a concave- or flat-shaped sieve, having a holes diameter or slot widths not greater than 0.1 mm, preferably not lower than 0.02 mm, preferably it is operated at atmospheric pressure.
  • 7. A process according to claim 1, wherein it is used an equipment constituted by a cylinder constituted by food grade stainless steel wherein the walls have openings or slots formed by woven wire cloth, or by screens, or said walls have holes, being the width of the openings of slots, or the diameter in the case of holes, not greater than 0.1 mm and preferably not lower than 0.02 mm, said cylinder having inside a stirrer in the form of an Archimedean screw revolving free in the fixed cylinder, or the cylinder is a rotating tube wound helically about a cylindrical axis.
  • 8. A process according to claim 7, wherein rotation of the moving part is at an angular speed of 2-10 rpm.
  • 9. A process according to claim 7, wherein the cylinder is in an horizontal position, and has a diameter ranging from 30 cm and 1 meter, a length from 2 meters to 20 meters and preferably from 2 meters to 5 meters for apparatus working in a discontinuos way; preferably about 20 meters for the apparatuses working in a continuous way.
  • 10. A process according to claim 1, wherein when treating tomato suspensions deriving from partially ripened tomatoes the separation solid-liquid apparatus is provided with slots width or holes diameter not higher than 0.5 mm, preferably about 0.3 mm.
  • 11. A process according to claim 1, wherein the tomato products have a content of water insoluble solids in the dry residue in the range 40-70%.
  • 12. A process according to claim 11, wherein the tomato products having a content of water insoluble solids in the dry residue in the range 40-70%, are added of lyophilized or cryoconcentrated serum, or serum concentrated by osmosis membrane or by evaporation under vacuum, to obtain tomato products having a lower content of water insoluble solids in the dry residue, preferably in the range 18-40%.
  • 13. A process for the separation of tomato juice serum from a tomato suspension by using a separation solid-liquid apparatus wherein the suspension to be filtered is maintained under stirring at an angular speed from 1 rpm to 20 rpm, the stirrer being of a shape to convey the suspension toward the central axis of the apparatus, or wherein there is no stirrer and the apparatus rotates.
  • 14. A process according to claim 13, wherein the apparatus for separating the liquid from a tomato suspension is a sieve maintained under an oscillating motion, the oscillations being from 1 to 20 oscillations/min.
  • 15. A process according to claim 13, wherein sterile conditions are used or the final tomato product undergoes a sterilization process.
  • 16. A process according to claim 13, wherein the process is conducted at temperatures in the range of 5° C.-25° C., at atmospheric pressure, or at pressures slightly higher than atmospheric pressure, from 760 mm Hg (0.101 MPa) up to 900 mm Hg (0.120 MPa) or by applying pressures slightly lower than atmospheric pressure, down to 450 mm Hg (0.06 MPa).
  • 17. A process according to claim 13, wherein a separation solid-liquid apparatus constituted of a vessel having walls with slots or with holes is employed, wherein the width of the slots or the diameter of the holes is not greater than 0.1 mm, the slot length ranging from 30 cm to 2 meters, said vessel having a cylindrical section, the separator being equipped with a mechanical stirrer, wherein the distance between the separator walls and the stirrer blades is from 0.5 to 2 cm.
  • 18. A process according to claim 13, wherein a concave- or flat-shaped sieve, having hole diameters or slot widths not greater than 0.1 mm is operated at atmospheric pressure.
  • 19. A process according to claim 13, wherein the equipment employed comprises a cylinder constituted by food grade stainless steel wherein the walls have openings or slots formed by woven wire cloth, or by screens, or said walls have holes, being the width of the openings of the slots, or hole diameters not greater than 0.1 mm, said cylinder having an inner stirrer in the form of an Archimedean screw revolving free in the fixed cylinder, or the cylinder is a rotating tube wound helically about a cylindrical axis.
  • 20. A process according to claim 13, wherein the rotation of the moving part is at an angular speed of 2-10 rpm.
  • 21. A process according to claim 19, wherein the cylinder is in a horizontal position, and has a diameter ranging from 30 cm to 1 meter or a length from 2 meters to 20 meters for apparatus working in a discontinuous way or about 20 meters for apparatus which works in a continuous way.
  • 22. A process according to claim 13, wherein the separation solid-liquid apparatus is provided with slots having a width or holes having a diameter not higher than 0.5 mm when treating tomato suspensions derived from partially ripened tomatoes.
  • 23. A process according to claim 13, wherein the tomato composition has a content of water-insoluble solids in the dry residue from 18% to 30%.
  • 24. A process according to claim 13, wherein to tomato compositions having a content of water-insoluble solids in the dry residue in the range from 20% to 30% is added lyophilized or cryoconcentrated serum, or serum concentrated by an osmosis membrane or by evaporation under vacuum.
Priority Claims (1)
Number Date Country Kind
MI2002A001801 Aug 2002 IT national
Parent Case Info

This application is a Divisional of co-pending application Ser. No. 10/524,014, filed on Feb. 8, 2005 and for which priority is claimed under 35 USC §120. application Ser. No. 10/524,014 is a national phase of PCT Application No. PCT/EP2003/0098639 filed on Aug. 5, 2003 under 35 USC §371 which claims priority from Italian Application No. M12002A0017801 filed on Aug. 8, 2002. The entire contents of each of the above-identified applications are hereby incorporated by reference.

Divisions (1)
Number Date Country
Parent 10524014 Feb 2005 US
Child 12624298 US