WO2009155557A2 - Protein hydrolysate compositions stable under acidic conditions - Google Patents
Protein hydrolysate compositions stable under acidic conditions Download PDFInfo
- Publication number
- WO2009155557A2 WO2009155557A2 PCT/US2009/048025 US2009048025W WO2009155557A2 WO 2009155557 A2 WO2009155557 A2 WO 2009155557A2 US 2009048025 W US2009048025 W US 2009048025W WO 2009155557 A2 WO2009155557 A2 WO 2009155557A2
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- WO
- WIPO (PCT)
- Prior art keywords
- protein
- soy
- protein hydrolysate
- hydrolysate composition
- beverage
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
- A23J3/00—Working-up of proteins for foodstuffs
- A23J3/30—Working-up of proteins for foodstuffs by hydrolysis
- A23J3/32—Working-up of proteins for foodstuffs by hydrolysis using chemical agents
- A23J3/34—Working-up of proteins for foodstuffs by hydrolysis using chemical agents using enzymes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
- A23L2/52—Adding ingredients
- A23L2/66—Proteins
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/17—Amino acids, peptides or proteins
- A23L33/18—Peptides; Protein hydrolysates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y304/00—Hydrolases acting on peptide bonds, i.e. peptidases (3.4)
- C12Y304/21—Serine endopeptidases (3.4.21)
- C12Y304/21025—Cucumisin (3.4.21.25)
Definitions
- the present invention relates to protein hydrolysate compositions that are stable at acid pH levels, processes for making protein hydrolysate compositions that are stable at acid pH levels, and food products comprising protein hydrolysate compositions that are stable at acid pH levels.
- soy While soy is an excellent source of protein, it tends to have "grassy” or “beany” flavors that some individuals find objectionable or unpalatable. What is needed, therefore, is an isolated soy protein product with reduced “soy” flavors and reduced bitterness or astringency.
- the desirable food product is a liquid beverage
- the isolated protein product to be added to the liquid beverage ideally should be clearer or more transparent that the starting material, i.e., the isolated protein product should have a high degree of solubility. Additionally, the isolated protein product should be stable at the pH of the desired liquid beverage.
- the protein hydrolysate composition comprises a mixture of oligopeptides having an average size of less than about 10,000 Daltons. Furthermore, the protein hydrolysate composition has a degree of hydrolysis of at least about 2.5%, generally at least about 5.0%, preferably at least about 7.5%, and most preferably at least about 10% and a solid solubility index of at least about 60% at a pH value of less than about pH 7.0.
- Another aspect of the invention encompasses a process for preparing a protein hydrolysate composition.
- the process comprises contacting a protein material with at least one endopeptidase that cleaves peptide bonds of the protein material to form a mixture of oligopeptides having an average size of less than about 10,000 Daltons, wherein the mixture of oligopeptides comprises the protein hydrolysate composition.
- the process further comprises lowering the pH of the protein hydrolysate composition to a value of less than about pH 7.0, wherein the protein hydrolysate composition has a solid solubility index of at least about 60% and a degree of hydrolysis of at least about 2.5%, generally at least about 5.0%, preferably at least about 7.5%, and most preferably at least about 10%.
- a further aspect of the invention provides a food or beverage product comprising a protein hydrolysate composition.
- the protein hydrolysate composition comprises a mixture of oligopeptides having an average size of less than about 10,000 Daltons, and the composition has a degree of hydrolysis of at least about 2.5%, generally at least about 5.0%, preferably at least about 7.5%, and most preferably at least about 10% and a solid solubility index of at least about 60% at a pH of less than about 7.0.
- Figure 1 is a plot of the percent of soluble solids as a function of the degree of hydrolysis (%) of hydrolysates generated with serine protease 1 (SP1 , circles) or ALCALASE ® (ALC, squares).
- Figure 2 depicts the percent of soluble solids of various hydrolysates as a function of pH.
- the figure presents the percent of soluble solids for a 5% ALC hydrolysate (diamonds), a 10% ALC hydrolysate (squares), and a 5% ALC hydrolysate (triangles) as a function of pH.
- Figure 3 presents the diagnostic scores for various sensory attributes of SP1 or ALCALASE ® (ALC) hydrolysates.
- Panel A presents the difference from control (i.e., SP1 sample) of the indicated hydrolysates that were presented to the assessors as slurries in water with 2.5% solids at neutral pH.
- Panel B depicts the difference from control (i.e., HXP 212) of the indicated hydrolysates that were presented to the assessors as 2.5% slurries in water.
- Panel C presents the difference from control (i.e., HXP 212) of the indicated hydrolysates that were presented to the assessors in orange sport beverages at pH 3.0 at 1.6% protein.
- Panel D depicts the difference from control (i.e., HXP 212) of the indicated hydrolysates that were presented to the assessors in orange sport beverages at pH 3.8 at 1.6% protein.
- Figure 4 depicts the molecular weight distribution of peptide fragments in SP1 (light gray bars) and ALCALASE ® (ALC) (dark gray bars) hydrolysates.
- Protein hydrolysate composition comprising a mixture of oligopeptides, wherein the oligopeptides are soluble at acidic pH levels.
- These protein hydrolysate compositions also have improved flavor profiles and sensory attributes relative to those of the starting protein material. Protein hydrolysate compositions having these properties are stable at acid pH levels and may be useful as supplements to ready-to-drink beverages and other food products.
- One aspect of the present invention provides a process for preparing a protein hydrolysate composition
- a process for preparing a protein hydrolysate composition comprising a mixture of oligopeptides having an average size of less than about 10,000 Daltons, wherein the composition has a degree of hydrolysis of at least 2.5%, generally at least about 5.0%, preferably at least about 7.5%, and most preferably at least about 10% and a solid solubility index of at least 60% at less than about pH 7.0.
- the process comprises contacting a protein material with at least one endopeptidase, wherein the protein material is hydrolyzed to form a mixture of oligopeptides.
- the process further comprises lowering the pH of the hydrolysate to less than about pH 7.0.
- the first step of the process comprises cleaving the protein material into a mixture of smaller sized oligopeptide fragments.
- the protein material is contacted with at least one endopeptidase to form the mixture of oligopeptides.
- suitable protein materials and suitable endopeptidases are detailed below.
- the protein material may be a soy protein material.
- soy protein materials may be used in the process of the invention to generate a soy protein hydrolysate.
- the soy protein material may be derived from whole soybeans in accordance with methods known in the art.
- the whole soybeans may be standard soybeans (i.e., non genetically modified soybeans), genetically modified soybeans (such as, e.g., soybeans with modified oils, soybeans with modified carbohydrates, soybeans with modified protein subunits, and so forth) and combinations thereof.
- Suitable examples of soy protein material include soy extract, soymilk, soymilk powder, soy curd, soy flour, soy protein isolate, soy protein concentrate, and mixtures thereof.
- the soy protein material used in the process may be a soy protein isolate (also called isolated soy protein, or ISP).
- soy protein isolates have a protein content of at least about 90% soy protein on a moisture-free basis.
- the soy protein isolate may comprise intact soy proteins or it may comprise partially hydrolyzed soy proteins.
- the soy protein isolate may have a high content of storage protein subunits such as 7S, 11S, 2S, etc.
- Non-limiting examples of soy protein isolates that may be used as starting material in the present invention are commercially available, for example, from Solae, LLC (St.
- SUPRO ® 500E SUPRO ® 620
- SUPRO ® 670 SUPRO ® 670
- SUPRO ® EX 33 SUPRO ® PLUS 2600F IP
- SUPRO ® PLUS 2640DS SUPRO ® PLUS 2800
- SUPRO ® PLUS 3000 and combinations thereof.
- the soy protein material may be a soy protein concentrate, which has a protein content of about 65% to less than about 90% on a moisture-free basis.
- suitable soy protein concentrates useful in the invention include the PROCON ® product line, ALPHA ® 12 and ALPHA ® 5800, all of which are commercially available from Solae, LLC.
- soy protein concentrate may be blended with the soy protein isolate to substitute for a portion of the soy protein isolate as a source of soy protein material.
- soy protein concentrate is substituted for a portion of the soy protein isolate, the soy protein concentrate is substituted for up to about 40% of the soy protein isolate by weight, at most, and more preferably is substituted for up to about 30% of the soy protein isolate by weight.
- the soy protein material may be soy flour, which has a protein content of about 49% to about 65% on a moisture-free basis.
- the soy flour may be defatted soy flour, partially defatted soy flour, or full fat soy flour.
- the soy flour may be blended with soy protein isolate or soy protein concentrate.
- the soy protein material may be material that has been separated into four major storage protein fractions or subunits (15S, 11S, 7S, and 2S) on the basis of sedimentation in a centrifuge.
- the 11S fraction is highly enriched in glycinins
- the 7S fraction is highly enriched in beta-conglycinins.
- the protein material may be derived from a plant other than soy.
- suitable plants include amaranth, arrowroot, barley, buckwheat, canola, cassava, channa (garbanzo), legumes, lentils, lupin, maize, millet, oat, pea, potato, rice, rye, sorghum, sunflower, tapioca, triticale, wheat, and mixtures thereof.
- Especially preferred plant proteins include barley, canola, lupin, maize, oat, pea, potato, rice, wheat, and combinations thereof.
- the plant protein material may be canola meal, canola protein isolate, canola protein concentrate, and combinations thereof.
- the plant protein material may be maize or corn protein powder, maize or corn protein concentrate, maize or corn protein isolate, maize or corn germ, maize or corn gluten, maize or corn gluten meal, maize or corn flour, zein protein, and combinations thereof.
- the plant protein material may be barley powder, barley protein concentrate, barley protein isolate, barley meal, barley flour, and combinations thereof.
- the plant protein material may be lupin flour, lupin protein isolate, lupin protein concentrate, and combinations thereof.
- the plant protein material may be oatmeal, oat flour, oat protein flour, oat protein isolate, oat protein concentrate, and combinations thereof.
- the plant protein material may be pea flour, pea protein isolate, pea protein concentrate, and combinations thereof.
- the plant protein material may be potato protein powder, potato protein isolate, potato protein concentrate, potato flour, and combinations thereof.
- the plant protein material may be rice flour, rice meal, rice protein powder, rice protein isolate, rice protein concentrate, and combinations thereof.
- the plant protein material may be wheat protein powder, wheat gluten, wheat germ, wheat flour, wheat protein isolate, wheat protein concentrate, solubilized wheat proteins, and combinations thereof.
- the protein material may be derived from an animal source.
- the animal protein material may be derived from eggs.
- suitable egg proteins include powdered egg, dried egg solids, dried egg white protein, liquid egg white protein, egg white protein powder, isolated ovalbumin protein, and combinations thereof.
- Egg proteins may be derived from the eggs of chicken, duck, goose, quail, or other birds.
- the protein material may be derived from a dairy source. Suitable dairy proteins include non-fat dry milk powder, milk protein isolate, milk protein concentrate, acid casein, caseinate (e.g., sodium caseinate, calcium caseinate, and the like), whey protein isolate, whey protein concentrate, and combinations thereof.
- the milk protein material may be derived from cows, goats, sheep, donkeys, camels, camelids, yaks, water buffalos, etc.
- the protein may be derived from the muscles, organs, connective tissues, or skeletons of land-based or aquatic animals.
- the animal protein may be gelatin, which is produced by partial hydrolysis of collagen extracted from the bones, connective tissues, organs, etc, from cattle or other animals.
- combinations of a soy protein material and at least one other protein material also may be used in the process of the invention. That is, a protein hydrolysate composition may be prepared from a combination of a soy protein material and at least one other protein material.
- a protein hydrolysate composition may be prepared from a combination of a soy protein material and at least one other protein material selected from the group consisting of vegetable protein material, animal protein material, dairy protein material, egg protein material, and combinations thereof.
- the vegetable protein material can include barley, canola, lupin, maize, oat, pea, potato, rice, wheat, any other vegetable protein known in the art, and combinations thereof.
- the concentrations of the soy protein material and the at least one other protein material used in combination can and will vary.
- the amount of soy protein material may range from about 1% to about 99% of the total protein used in the combination. In one embodiment, the amount of soy protein material may range from about 1% to about 20% of the total protein used in combination. In another embodiment, the amount of soy protein material may range from about 20% to about 40% of the total protein used in combination. In still another embodiment, the amount of soy protein material may range from about 40% to about 80% of the total protein used in combination. In a further embodiment, the amount of soy protein material may range from about 80% to about 99% of the total protein used in combination.
- the amount of the at least one other protein material may range from about 1% to about 99% of the total protein used in combination. In one embodiment, the amount of the at least one other protein material may range from about 1 % to about 20% of the total protein used in combination. In another embodiment, the amount of the at least one other protein material may range from about 20% to about 40% of the total protein used in combination. In still another embodiment, the amount of the at least one other protein material may range from about 40% to about 80% of the total protein used in combination. In a further embodiment, the amount of the at least one other protein material may range from about 80% to about 99% of the total protein used in combination.
- the protein material is typically mixed or dispersed in water to form a slurry comprising about 1% to about 20% protein by weight (on an "as is" basis).
- the slurry may comprise about 1% to about 5% protein (as is) by weight.
- the slurry may comprise about 6% to about 10% protein (as is) by weight.
- the slurry may comprise about 11% to about 15% protein (as is) by weight.
- the slurry may comprise about 16% to about 20% protein (as is) by weight.
- the slurry of protein material may be heated from about 70°C to about 9O 0 C for about 2 minutes to about 20 minutes to inactivate putative endogenous protease inhibitors.
- the pH and the temperature of the protein slurry are adjusted so as to optimize the hydrolysis reaction, and in particular, to ensure that the endopeptidase used in the hydrolysis reaction functions near its optimal activity level.
- the pH of the protein slurry may be adjusted and monitored according to methods generally known in the art.
- the pH of the protein slurry may be adjusted and maintained at a value from about pH 7.0 to about pH 11.0. In one embodiment, the pH of the protein slurry may be adjusted and maintained at from about pH 7.0 to about pH 8.0.
- the pH of the protein slurry may be adjusted and maintained at from about pH 8.0 to about pH 9.0. In yet another embodiment, the pH of the protein slurry may be adjusted and maintained at from about pH 9.0 to about pH 10.0. In a preferred embodiment, the pH of the protein slurry may be adjusted and maintained at about pH 8.0 to about pH 8.5.
- the temperature of the protein slurry is preferably adjusted and maintained at from about 30°C, preferably at least about 5O 0 C to about 80°C during the hydrolysis reaction in accordance with methods known in the art. In general, temperatures above this range may inactivate the endopeptidase. Temperatures below this range tend to slow the activity of the endopeptidase. In a one embodiment, the temperature of the protein slurry may be adjusted and maintained at from about 5O 0 C to about 6O 0 C during the hydrolysis reaction. In another embodiment, the temperature of the protein slurry may be adjusted and maintained at from about 60°C to about 7O 0 C during the hydrolysis reaction. In still another embodiment, the temperature of the protein slurry may be adjusted and maintained at from about 70 0 C to about 80°C during the hydrolysis reaction.
- the hydrolysis reaction generally is initiated by adding at least one endopeptidase to the slurry of protein material to form a reaction mixture.
- the endopeptidase catalyzes cleavage of peptides bonds within the proteins of the protein material to form a mixture of smaller sized oligopeptides.
- Endopeptidases are enzymes that generally cleave peptide bonds within the inner regions of a polypeptide chain.
- endopeptidases are suitable for use in the process of the invention.
- the endopeptidase will have a broad spectrum of activity (i.e., will hydrolyze the peptide bond between essentially any two amino acid residues).
- the endopeptidase may be a food-grade enzyme having optimal activity at a pH from about 7.0 to about 11.0 and at a temperature from about 30 0 C, preferably at least about 50 0 C to about 80 0 C.
- the endopeptidase will be an enzyme of microbial origin.
- microbial enzymes rather than animal or plant enzymes, is advantageous in that microbial enzymes exhibit a broad spectrum of characteristics (pH optima, temperature etc.) and may be consistently obtainable in relatively large quantities.
- endopeptidase will be a member of the serine peptidase family (see MEROPS Peptidase Database, release 8.00A; http//merops. sanger.ac.uk).
- the endopeptidase may be the subtilisin protease, or variant thereof, derived from Bacillus lichniformis (MEROPS Accession No. MER000309) that is available under the tradename ALCALASE ® from Novozymes (Bagsvaerd, Denmark).
- the endopeptidase may be a subtilisin, or variant thereof, derived from another microorganism.
- the endopeptidase may be serine protease (SP1) from Nocardiopsis prasina (International Patent Application No. WO02005035747, which is incorporated herein by reference in its entirety).
- the amino acid sequence of SP1 is ADI IGGLAYT MGGRCSVGFA ATNAAGQPGF VTAGHCGRVG TQVTIGNGRG VFEQSVFPGN DAAFVRGTSN FTLTNLVSRY NTGGYATVAG HNQAPIGSSV CRSGSTTGWH CGTIQARGQS VSYPEGTVTN MTRTTVCAEP GDSGGSYISG TQAQGVTSGG SGNCRTGGTT FYQEVTPMVN SWGVRLRT (SEQ ID NO:1).
- the endopeptidase may be a serine protease having an amino acid sequence that is at least 80%, 81 %, 82%, 83%, 84%, or 85% identical to SEQ ID NO:1 or a fragment thereof.
- the endopeptidase may be a serine protease having an amino acid sequence that is at least 86%, 87%, 88%, 89%, 90%, 91 %, or 92% identical to SEQ ID NO:1 or a fragment thereof.
- the endopeptidase may be a serine protease having an amino acid sequence that is at least 93%, 94%, 95%, 96%, 97%, 98% or 99% to SEQ ID NO:1 or a fragment thereof.
- the alignment of two amino acid sequences may be determined by using the Needle program from the EMBOSS package (Rice, P., Longden, I. and Bleasby, A. (2000) EMBOSS: The European Molecular Biology Open Software Suite. Trends in Genetics 16, (6) pp276 — 277; http://emboss.org) version 2.8.0.
- the Needle program implements the global alignment algorithm described in Needleman, S. B. and Wunsch, C. D. (1970) J. MoI. Biol. 48, 443-453.
- the substitution matrix used is BLOSUM62, gap opening penalty is 10, and gap extension penalty is 0.5.
- the percentage of sequence identity is determined by comparing two optimally aligned sequences over a comparison window, wherein the portion of the amino acid sequence in the comparison window may comprise additions or deletions (i.e., gaps) as compared to the reference sequence (which does not comprise additions or deletions) for optimal alignment of the two sequences.
- the percentage is calculated by determining the number of positions at which an identical amino acid occurs in both sequences to yield the number of matched positions, dividing the number of matched positions by the total number of positions in the shortest of the two sequences in the window of comparison, and multiplying the result by 100 to yield the percentage of sequence identity.
- an amino acid residue may be substituted with another amino acid residue having a similar side chain without affecting the function of the polypeptide.
- a group of amino acids having aliphatic side chains is glycine, alanine, valine, leucine, and isoleucine; a group of amino acids having aliphatic-hydroxyl side chains is serine and threonine; a group of amino acids having amide-containing side chains is asparagine and glutamine; a group of amino acids having aromatic side chains is phenylalanine, tyrosine, and tryptophan; a group of amino acids having basic side chains is lysine, arginine, and histidine; and a group of amino acids having sulfur-containing side chains is cysteine and methionine.
- Preferred conservative amino acid substitution groups include: valine-leucine- isoleucine, phenylalanine-tyrosine, lysine-arginine, alanine-valine, and asparagine- glutamine.
- the endopeptidase may have at least one conservative amino acid substitutions with respect to SEQ ID NO:1. In one embodiment, the endopeptidase may have about 45 conservative amino acid substitutions with respect to SEQ ID NO:1. In another embodiment, the endopeptidase may have about 35 conservative amino acid substitutions with respect to SEQ ID NO:1. In still embodiment, the endopeptidase may have about 25 conservative amino acid substitutions with respect to SEQ ID NO:1.
- the endopeptidase may have about 15 conservative amino acid substitutions with respect to SEQ ID NO:1. In an alternate embodiment, the endopeptidase may have about 10 conservative amino acid substitutions with respect to SEQ ID NO:1. In yet another embodiment, the endopeptidase may have about 5 conservative amino acid substitutions with respect to SEQ ID NO:1. In a further embodiment, the endopeptidase may have about one conservative amino acid substitutions with respect to SEQ ID NO:1.
- endopeptidases may also be utilize in the process of the invention.
- the protein material may be contacted with a mixture of ALCALASE ® and SP1.
- the protein material may be contacted with a mixture of SP1 and an endopeptidase that is at least 80% identical to SEQ ID No:1.
- other combinations of broad spectrum serine proteases may be used without departing from the scope of the invention.
- the amount of endopeptidase added to the protein slurry can and will vary depending upon the protein material, the desired degree of hydrolysis, and the duration of the hydrolysis reaction. In general, the amount of endopeptidase will range from about 1 mg of enzyme protein to about 5000 mg of enzyme protein per kilogram of starting protein material. In another embodiment, the amount of endopeptidase may range from 50 mg of enzyme protein to about 1000 mg of enzyme protein per kilogram of starting protein material. In yet another embodiment, the amount of endopeptidase may range from about 1000 mg of enzyme protein to about 5000 mg of enzyme protein per kilogram of starting protein material.
- the duration of the hydrolysis reaction can and will vary, depending upon the concentration of the endopeptidase and the desired degree of hydrolysis, for example. Generally speaking, the duration of the hydrolysis reaction may range from a few minutes to many hours, such as, from about 5 minutes to about 48 hours. In a preferred embodiment, the duration of the reaction may be about 30 minutes to about 120 minutes.
- the reaction mixture may be heated to a temperature that is high enough to inactivate the endopeptidase. For example, heating the reaction mixture to a temperature of approximately 90 0 C will substantially heat-inactivate the most proteases.
- the hydrolysis reaction may be terminated by lowering the pH of the reaction mixture to about 4.0 and heating the reaction mix to a temperature greater than about 80 0 C.
- acids that may be used to lower the pH of the reaction mixture include citric acid, formic acid, fumaric acid, hydrochloric acid, lactic acid, malic acid, phosphoric acid, and combinations thereof.
- the second step of the process comprises lowering the pH of the protein hydrolysate to a value less than about pH 7.0.
- the pH of the protein hydrolysate may be adjusted to a level from about pH 6.0 to about pH 7.0.
- the pH of the protein hydrolysate may be adjusted to a level from about pH 5.0 to about pH 6.0.
- the pH of the protein hydrolysate may be adjusted to a level from about pH 4.0 to about pH 5.0.
- the pH of the protein hydrolysate may be adjusted to a level from about pH 3.0 to about pH 4.0.
- the pH of the protein hydrolysate may be adjusted to a level from about pH 2.0 to about pH 3.0.
- the pH of the protein hydrolysate may be adjusted to a level from about pH 1.0 to about pH 2.0.
- the pH of the protein hydrolysate may be adjusted to a pH value of less than about pH 5.0.
- an acidic solution will be used to adjust the pH level of the protein hydrolysate.
- acids that may be used to adjust the pH of they hydrolysate include citric acid, formic acid, fumaric acid, hydrochloric acid, lactic acid, malic acid, phosphoric acid and combinations thereof.
- Another aspect of the invention encompasses a protein hydrolysate composition
- a protein hydrolysate composition comprising a mixture of oligopeptides having an average size of less than about 10,000 Daltons. Additionally, the composition has a degree of hydrolysis of at least about 2.5%, generally at least about 5.0%, preferably at least about 7.5%, and most preferably at least about 10% and a solid solubility index of at least about 60% at a pH of less than about 7.0.
- the degree of hydrolysis refers to the percentage of peptide bonds cleaved versus the starting number of total peptide bonds. For example, if an intact protein containing five hundred total peptide bonds is hydrolyzed until fifty of the peptide bonds are cleaved, then the degree of hydrolysis of the resulting hydrolysate is 10%.
- the degree of hydrolysis may be determined using the o-phthaldialdehye (OPA) method or the trinitrobenzene sulfonic (TNBS) colorimetric method, as detailed in the examples. The higher the degree of hydrolysis the greater the extent of protein hydrolysis.
- the degree of hydrolysis may be measured in the entire hydrolysate (i.e., whole fraction) or the degree of hydrolysis may be measured in the soluble fraction of the hydrolysate (i.e., the supernatant fraction after centrifugation of the hydrolysate at about 500-1000 x g for about 5-10 min).
- the degree of hydrolysis of the protein hydrolysate composition can and will vary depending upon the source of the protein material, the endopeptidase(s) used, and the conditions of the hydrolysis reaction. In general, the degree of hydrolysis of the protein hydrolysate composition will be greater than about 10%. In one embodiment, the degree of hydrolysis of the protein hydrolysate composition may range from about 10% to about 15%. In another embodiment, the degree of hydrolysis of the protein hydrolysate composition may range from about 15% to about 20%. In a further embodiment, the degree of hydrolysis of the protein hydrolysate composition may range from about 20% to about 25%. In still another embodiment, the degree of hydrolysis of the protein hydrolysate composition may range from about 25% to about 35%.
- the solid solubility index (SSI) or percent of soluble solids is a measure of the solubility of the solids (i.e., polypeptides and fragments thereof) comprising a protein hydrolysate composition.
- the amount of soluble solids may be estimated by measuring the amount of solids in solution before and after centrifugation (e.g., about 500-1000 x g for about 5-10 min).
- the amount of soluble solids may be determined by estimating the amount of protein in the composition before and after centrifugation using a technique well known in the art (such as, e.g., a bicinchoninic acid (BCA) protein determination colorimetric assay).
- BCA bicinchoninic acid
- the protein hydrolysate compositions of the invention will have a solid solubility index of at least 60% at a pH value of less than about pH 7.0.
- the solid solubility index of the hydrolysate may range from about 60% to about 70% at a pH value of less than about pH 7.0.
- the solid solubility index of the hydrolysate may range from about 70% to about 80% at a pH value of less than about pH 7.0.
- the solid solubility index of the hydrolysate may range from about 80% to about 90% at a pH value of less than about pH 7.0.
- the solid solubility index of the hydrolysate may range from about 90% to about 99% at a pH value of less than about pH 7.0.
- the protein hydrolysate composition as compared to the starting protein material, will comprise a mixture of oligopeptides of varying lengths and molecular sizes.
- the molecular sizes of the oligopeptides may range from about 75 Daltons (i.e., free glycine) to about 100,000 Daltons.
- the average size of the oligopeptides forming the protein hydrolysate composition will be less than about 10,000 Daltons.
- the average size of the oligopeptides forming the protein hydrolysate composition may be less than about 8000 Daltons.
- the average size of the oligopeptides forming the protein hydrolysate composition may be less than about 6000 Daltons.
- the average size of the oligopeptides forming the protein hydrolysate composition may be less than about 4000 Daltons. In an alternate embodiment, the average size of the oligopeptides forming the protein hydrolysate composition may be less than about 2000 Daltons. In yet another embodiment, the average size of the oligopeptides forming the protein hydrolysate composition may be less than about 1000 Daltons.
- the protein hydrolysate compositions of the invention generally are substantially stable. As used herein, “stability” refers to the lack of sediment formation over time.
- the protein hydrolysate compositions may be stored at room temperature (i.e., about 23°C) or a refrigerated temperature (i.e., about 4°C). In one embodiment, the protein hydrolysate composition may be stable for about one week to about four weeks. In another embodiment, the protein hydrolysate composition may be stable for about one month to about six months. In a further embodiment, the protein hydrolysate composition may be stable for more than about six months.
- the protein hydrolysate compositions of the invention may be dried.
- the protein hydrolysate composition may be spray dried.
- the temperature of the spray dryer inlet may range from about 260°C (500 0 F) to about 316°C (600 0 F) and the exhaust temperature may range from about 82 0 C (18O 0 F) to about 38 0 C (100 0 F).
- the protein hydrolysate composition may be vacuum dried, freeze dried, or dried using other procedures known in the art.
- the protein hydrolysate composition may comprise at least one oligopeptide having an amino acid sequence that corresponds to or is derived from the group consisting of SEQ ID NO:2, 3, 4, 5, 6, 7, 8, 9, 10, 11 , 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 , 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 , 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 , 42, 43, 44, and 45.
- the protein hydrolysate composition may comprise at least ten oligopeptides or fragments thereof selected from the group consisting of SEQ ID NO:2- 45.
- the protein hydrolysate composition may comprise at least 20 oligopeptides or fragments thereof selected from the group consisting of SEQ ID NO:2-45. In a further embodiment, the protein hydrolysate composition may comprise at least 30 oligopeptides or fragments thereof selected from the group consisting of SEQ ID NO:2-45. In yet another embodiment, the protein hydrolysate composition may comprise at least 40 oligopeptides or fragments thereof selected from the group consisting of SEQ ID NO:2-45. In an alternate embodiment, the protein hydrolysate composition may comprise oligopeptides or fragments thereof corresponding to SEQ ID NO:2-45.
- the invention also encompasses any of the oligopeptides identified in the soy protein hydrolysates.
- an oligopeptide may be purified by a chromatographic method, such as size exclusion chromatography, ion exchange chromatography, affinity chromatography, hydrophobic interaction chromatography, reverse phase chromatography, and the like.
- a chromatographic method such as size exclusion chromatography, ion exchange chromatography, affinity chromatography, hydrophobic interaction chromatography, reverse phase chromatography, and the like.
- an oligopeptide may be synthesized, using a synthesis method known to those of skill in the art.
- the protein hydrolysate compositions may have enhanced sensory and taste profiles with respect to the starting protein material or other hydrolysate compositions.
- the degree of hydrolysis typically impacts other physical properties and sensory properties of the resulting soy protein hydrolysate composition.
- the soy protein hydrolysate compositions of the invention have substantially less bitter sensory attributes and improved overall liking scores than commercially available soy protein hydrolysates.
- a further aspect of the present invention is the provision of a food product comprising any of the protein hydrolysate compositions described herein.
- the food product may comprise any of the isolated polypeptides, or fragments thereof, described herein.
- the protein hydrolysate composition may be derived from soy protein.
- the protein hydrolysate composition may be derived from vegetable protein material, animal protein material, dairy protein material, egg protein material, and combinations thereof.
- the vegetable protein material can include barley, canola, lupin, maize, oat, pea, potato, rice, wheat, any other vegetable protein known in the art, and combinations thereof.
- the protein hydrolysate composition may be derived from a combination of soy and at least one other protein source selected from the group consisting of vegetable protein material, animal protein material, dairy protein material, egg protein material, and combinations thereof.
- the vegetable protein material can include barley, canola, lupin, maize, oat, pea, potato, rice, wheat, any other vegetable protein known in the art, and combinations thereof.
- the protein hydrolysate composition may comprise a combination of different protein hydrolysates.
- the protein hydrolysate composition may comprise isolated or synthetic polypeptides selected from the group of amino acid sequences consisting of SEQ ID NO:2-45. The degree of hydrolysis of the protein hydrolysate composition used to make a food product also will vary depending upon, for example, the source of the protein material and the desired food product.
- the food or beverage product can further include an edible material.
- the selection of the appropriate edible material will vary depending on the desired food or beverage product.
- the edible material may be a plant-derived material, an animal-derived material, or a biomaterial (i.e., a protein, a carbohydrate, a lipid, etc.) isolated from a plant-derived material, an animal-derived material, and so forth.
- the beverage may be a ready-to-drink (RTD) beverage.
- the beverage may be a substantially clear beverage such as a juice beverage, a fruit flavored beverage, a carbonated beverage, a sports drink, a nutritional supplement beverage, a weight management beverage, or an alcohol-based fruit beverage.
- Such substantially clear beverages typically have pH values of less than about pH 5.0.
- the substantially clear beverage may have a pH value of less than about pH 4.0.
- the beverage may be a substantially cloudy beverage such as a meal replacement drink, a protein shake, a coffee-based beverage, a nutritional supplement beverage, or a weight management beverage.
- the substantially cloudy beverage will have a pH value of less than about pH 7.0.
- the edible material may include fruit juice, sugar, milk, non-fat dry milk powder, caseinate, soy protein concentrate, soy protein isolate, whey protein concentrate, whey protein isolate, isolated milk protein, chocolate, cocoa powder, coffee, tea, and combinations thereof.
- the beverage may further comprise sweetening agents (such as glucose, sucrose, fructose, maltodextrin, sucralose, corn syrup, honey, maple syrup, etc.), flavoring agents (e.g., fruit flavors, chocolate flavor, vanilla flavor, etc), emulsifying or thickening agents (e.g., lecithin, carrageenan, cellulose gum, cellulose gel, starch, gum arabic, xanthan gum, and the like); stabilizing agents, lipid materials (e.g., canola oil, sunflower oil, high oleic sunflower oil, fat powder, etc.), preservatives (e.g., potassium sorbate, sorbic acid, and so forth), antioxidants (e.g., ascorbic acid, sodium ascorbate, etc.), coloring agents, vitamins, minerals, and combinations thereof.
- sweetening agents such as glucose, sucrose, fructose, maltodextrin, sucralose, corn syrup, honey, maple syrup, etc.
- flavoring agents e.
- the food product may be a food bar, such as a granola bar, a snack bar, a cereal bar, as a breakfast bar, a nutrition bar, an energy bar, or a weight management bar.
- a food bar such as a granola bar, a snack bar, a cereal bar, as a breakfast bar, a nutrition bar, an energy bar, or a weight management bar.
- degree of hydrolysis refers to the percentage of the total number of peptide bonds that are cleaved.
- endopeptidase refers to an enzyme that hydrolyzes internal peptide bonds in oligopeptide or polypeptide chains.
- the group of endopeptidases comprises enzyme subclasses EC 3.4.21-25 (International Union of Biochemistry and Molecular Biology enzyme classification system).
- a "food grade enzyme” is an enzyme that is generally recognized as safe (GRAS) approved and is safe when consumed by an organism, such as a human. Typically, the enzyme and the product from which the enzyme may be derived are produced in accordance with applicable legal and regulatory guidelines.
- a "hydrolysate” is a reaction product obtained when a compound is cleaved through the effect of water. Protein hydrolysates occur subsequent to thermal, chemical, or enzymatic degradation. During the reaction, large molecules are broken into smaller proteins, soluble proteins, oligopeptides, peptide fragments, and free amino acids.
- polypeptide encompasses oligopeptides.
- solid solubility index refers to the percentage of soluble proteins or soluble solids.
- soy protein isolate or “isolated soy protein,” as used herein, refer to a soy material having a protein content of at least about 90% soy protein on a moisture free basis.
- a soy protein isolate is formed from soybeans by removing the hull and germ of the soybean from the cotyledon, flaking or grinding the cotyledon and removing oil from the flaked or ground cotyledon, separating the soy protein and carbohydrates of the cotyledon from the cotyledon fiber, and subsequently separating the soy protein from the carbohydrates.
- soy protein concentrate is a soy material having a protein content of from about 65% to less than about 90% soy protein on a moisture-free basis. Soy protein concentrate also contains soy cotyledon fiber, typically from about 3.5% up to about 20% soy cotyledon fiber by weight on a moisture-free basis.
- a soy protein concentrate is formed from soybeans by removing the hull and germ of the soybean, flaking or grinding the cotyledon and removing oil from the flaked or ground cotyledon, and separating the soy protein and soy cotyledon fiber from the soluble carbohydrates of the cotyledon.
- soy flour refers to a comminuted form of defatted, partially defatted, or full fat soybean material having a size such that the particles can pass through a No. 100 mesh (U.S. Standard) screen.
- Soy cake, chips, flakes, meal, or mixture of the materials are comminuted into soy flour using conventional soy grinding processes.
- Soy flour has a soy protein content of about 49% to about 65% on a moisture free basis.
- the flour is very finely ground, most preferably so that less than about 1 % of the flour is retained on a 300 mesh (U.S. Standard) screen.
- soy cotyledon fiber refers to the polysaccharide portion of soy cotyledons containing at least about 70% dietary fiber. Soy cotyledon fiber typically contains some minor amounts of soy protein, but may also be 100% fiber. Soy cotyledon fiber, as used herein, does not refer to, or include, soy hull fiber. Generally, soy cotyledon fiber is formed from soybeans by removing the hull and germ of the soybean, flaking or grinding the cotyledon and removing oil from the flaked or ground cotyledon, and separating the soy cotyledon fiber from the soy material and carbohydrates of the cotyledon.
- the starting material was 10% soy protein isolate (e.g., SUPRO ® 500E) suspended in 0.1 M sodium phosphate, pH 8.5.
- the pH of the protein slurry was adjusted to 8.0 with HCI.
- the protein slurry was heated to about 7O 0 C and the mixture was hydrolyzed with either serine protease (SP1) from Nocardiopsis prasina or subtilisin (ALCALASE ® ) from Bacillus licheniformis.
- SP1 serine protease
- ACALASE ® subtilisin
- Each endopeptidase was used at a concentration of 19.5 mg, 39.0 mg, 78.1 mg, 156.3 mg, or 312.5 mg of protease per kg of soy protein isolate.
- the hydrolysis reaction was allowed to proceed at 70 0 C for 120 minutes.
- the reaction was stopped with the addition of 1 M sodium formate, pH 3.7, such that the pH of the mixture was about 4.0 and the final concentration of soy protein in the hydrolysate was 5%.
- the percent of soluble solids or the solid solubility index (SSI) of each of the resultant hydrolysates was determined by measuring the soluble protein using a bicinchoninic acid (BCA) based protein assay (e.g., a Micro BCATM Protein Assay Kit; Sigma-Aldrich, St. Louis, MO). For this, each hydrolysate was centrifuged at 500 x g for 10 min to precipitate any insoluble fragments. Each supernatant fraction can be diluted with different concentration (i.e., 10-, 20-, 40-, and 80-fold with distilled H 2 O). In this case 10 fold dilution was used.
- BCA bicinchoninic acid
- a 20 ⁇ l_ aliquot of each dilution was transferred to a microtiter plate and 160 ⁇ l_ of BCA working reagent was added. After 30 minutes of incubation at 37°C, the absorbance at 562 nm was measured. A BSA standard dilution (0-1 mg/mL) curve was also run.
- the positive control was a commercially available soy protein hydrolysate (i.e., HXP114). Solubility was calculated assuming that the positive control was 100% soluble and is expressed as percent (i.e., %SSI).
- the degree of hydrolysis was determined using the o-phthaldialdehyde (OPA) assay. For this, each hydrolysate (and non-hydrolyzed starting material) was diluted 50-fold with water. A 20 ⁇ L aliquot of each was mixed with 180 ⁇ L of OPA reagent (4 mM disodium tetraborate, 0.1 % SDS, 0.24 mM OPA, 0.24 mM DTT in a well of a microtiter plate. Absorbance at 340 nm was measured. A standard curve with L-serine (0-0.5 mg/mL) was also included. The degree of hydrolysis was calculated by subtracting the %DH value of the non-hydrolyzed starting material from the %DH value of each hydrolysate.
- OPA o-phthaldialdehyde
- Table 2 presents the results.
- the degree of hydrolysis of each hydrolysate was similar at each concentration of protease.
- the percent of soluble solids increased as the degree of hydrolysis increased for the different hydrolysates, indicating that these bench studies are predictive of the yields of soluble peptides.
- Table 3 presents the degree of hydrolysis and % soluble solids
- the SQS method is based upon a direct comparison between a test sample and a control sample, and it provides both qualitative and directional quantitative differences.
- the control sample was a 5% slurry of untreated isolated soy protein.
- a panel of five to ten assessors was provided with aliquots of each test (diluted to a 5% slurry) and control sample. The samples were allowed equilibrate to room temperature before scoring.
- the evaluation protocol comprised swirling a cup three times, while keeping the bottom of the cup on the table. After the sample sat for 2 seconds, each taster sipped about 10 mL (2 tsp), swished it about her/his mouth for 10 seconds, and then expectorated. The taster then rated the differences between the test sample and the control sample according to the scale presented in Table 4.
- the SQS scores are presented in Table 5. In general, the SP1 hydrolysates had higher SQS scores than the ALCALASE ® hydrolysates.
- Each test sample was further evaluated to provide diagnostic information on how the test sample differed from the control sample with respect to bitterness. That is, if the test sample had slightly more, moderately more, or extremely more bitterness than the control sample, then a score of +1 , +2, +3, respectively, was assigned. Likewise, if the test sample had slightly less, moderately less, or extremely less bitterness than the control sample, then a score of -1 , -2, -3, respectively, was assigned. This analysis provided an assessment of the directional quantitative differences between the test sample and the control sample. If the test sample had no difference from the control, a score of zero (0) was assigned.
- Table 6 presents the bitterness scores of the two hydrolysates used in two different trials.
- the SP1 hydrolysates were rated as being less bitter than that of the ALCALASE ® hydrolysates in each trial.
- Soy protein was hydrolyzed with either SP1 or ALCALASE ® (ALC)
- Example 1 expressed as % enzyme protein
- the hydrolysis reactions were conducted at pH 8.0-8.5, at 60 0 C, for 30-60 min.
- the percent of soluble solids was determined essentially by the percent solids of the soluble over the whole fractions. Yield was calculated as the protein material concentration at the isoelectric point of pH 4.5. Yield is defined as a ratio of the percent of total solids to be centrifuged vs. percent of the solids in the soluble fraction after centrifugation.
- the degree of hydrolysis was determined using a simplified trinitrobenzenesulfonic acid (TNBS) method (i.e., based on that of Adler-Nissen, 1979, J. Agric. Food Chem. 27(6): 1256-1262).
- TNBS trinitrobenzenesulfonic acid
- 0.1 g of the soy protein hydrolysate was dissolved in 100 mL of 0.025 N NaOH.
- An aliquot (2.0 mL) of the hydrolysate solution was mixed with 8 mL of 0.05 M sodium borate buffer (pH 9.5).
- Two mL of the buffered hydrolysate solution was treated with 0.20 mL of 10% tri nitrobenzene sulfonic acid, followed by incubation in the dark for 15 minutes at room temperature.
- the reaction was quenched by adding 4 ml_ of a 0.1 M sodium sulfite-0.1 M sodium phosphate solution (1 :99 ratio), and the absorbance was read at 420 nm.
- a 0.1 mM glycine solution was used as the standard.
- the following calculation was used to determine the percent recovery for the glycine standard solution: (absorbance of glycine at 420 nm - absorbance of blank at 420 nm) x (100/0.710). Values of 94% or higher were considered acceptable.
- Table 7 presents the percent yield by solids, the percent soluble solids, and the degree of hydrolysis. It was found that hydrolysates prepared with either SP1 or ALC had similar yields at equal enzyme doses or similar degrees of hydrolysis. Furthermore, these data reveal that increased degrees of hydrolysis or levels of enzyme increased the yield. As shown in Figure 2, hydrolysates with different degrees of hydrolysis were equally soluble at all pH levels.
- test sample had slightly less, moderately less, or extremely less of the attribute (as defined in Table 8 and shown in Figures 3A and 3B), than the control sample, then scores of -1 , -2, -3, respectively, were assigned. This analysis provided an assessment of the directional quantitative differences between the test sample and the control sample.
- FIGS 3A and 3B for hydrolysates with similar %DH levels.
- the TL1 hydrolysates had larger decreases in grain and soy/legume attributes and smaller increases in astringency and bitterness than did the ALC hydrolysates.
- the highest %DH ALC hydrolysates had particularly large increases in bitterness relative to the control.
- the hydrolysates were presented to the assessors as 2.5% slurries in water at neutral pH, wherein the control was a SP1 hydrolysate.
- ALC and SP1 hydrolysates with about 12% DH and a commercially available soy hydrolysate (i.e., HXP 212) were compared with the SP1 hydrolysate control sample (see Figure 3A). It was found that the ALC sample was slightly more bitter and salty than the control; the SP1 sample showed no difference, as expected; and the HXP 212 sample was slightly less salty, moderately more bitter, and slightly more savory than the control.
- HXP 212 the commercially available soy hydrolysate (HXP 212) was used as the control sample.
- Samples were prepared by mixing an aliquot containing 3 mg of hydrolysate and 0.1% formic acid (300 ⁇ L) in a microcentrifuge tube and vortexing the mixture for 1-2 minutes. The entire mixture was then transferred to a pre-cleaned C18 tip (Glygen Corp., Columbia, MD) for peptide isolation. The C18 tip was cleaned by eluting with 0.1 % formic acid in 60% acetonitrile (300 ⁇ L) and equilibrated with 0.1 % formic acid (600 ⁇ L). Materials eluted with 0.1% formic acid fraction were discarded, and the peptides were eluted with 0.1 % formic acid in 60% acetonitrile (600 ⁇ L).
- Table 11 presents the peptides identified in SP1 hydrolysates
- Table 12 presents the peptides identified in ALC hydrolysates. A total of 37 distinct peptides were identified in the SP1 hydrolysates, 33 of which were unique to SP1 hydrolysates. A total of 11 peptides were identified in the ALC hydrolysates, 7 of which were unique to ALC hydrolysates.
- Isolated soy protein was hydrolyzed with either SP1 or ALCALASE ®
- ALC ALC essentially as described above. SP1 was used at 1500 mg/kg soy, and ALC was used at 5.0% CBS (Curd solid basis). The degree of hydrolysis of the soluble fraction was determined as described above in Example 3. The degree of hydrolysis of the SP1 hydrolysate was 15.9% and the degree of hydrolysis of the ALC hydrolysate was 21.1 %.
- SP1 and ALC hydrolysates was determined by size exclusion chromatography.
- the system was an Agilent 1100 HPLC series (Agilent Technologies, Santa Clara, CA) with a Zorbax GF-250 column and Zorbax guard column (Agilent Technologies) and a SPC GPEP-30 column (Eprogen Inc., Darien, IL).
- the mobile phases comprised phosphate buffered saline and 10% isopropanol. Protein standards ranging from 555 Daltons to 200,000 Daltons were also run.
- the SP1 hydrolysate had more 500-5000 Dalton peptide fragments and fewer 10,000-50,000 Daltons fragments relative to the ALC hydrolysate.
- Example 7 Energy Drink Prototypes.
- Prototypical orange sports beverages comprising SP1 or ALC soy hydrolysates were prepared and compared with an orange sports beverage comprising a commercial soy hydrolysate (i.e., HXP 212) with regards to flavor and functionality.
- Table 13 presents the compositions of the drinks. Each drink was split into two fractions, which were adjusted to pH 3.8 or pH 3.2. Each drink had about 4.0 grams of protein per 240 gram serving. The drinks were stored at 4°C.
- the sediment of the different drinks was determined by placing the samples in 100 ml cylinders. The sediment was measured after one day or after two weeks (at 4 0 C). Table 15 presents the percent of sediment of each. The drinks prepared with the ALC hydrolysate had much more sediment from the onset.
Abstract
Description
Claims
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CA2726110A CA2726110A1 (en) | 2008-06-20 | 2009-06-19 | Protein hydrolysate compositions stable under acidic conditions |
BRPI0909932-8A BRPI0909932A2 (en) | 2008-06-20 | 2009-06-19 | "hydrolyzed protein composition, process for preparing a hydrolyzed protein composition and food product" |
JP2011514862A JP2011530274A (en) | 2008-06-20 | 2009-06-19 | Proteolytic composition stable under acidic conditions |
EP09767866A EP2299839A2 (en) | 2008-06-20 | 2009-06-19 | Protein hydrolysate compositions stable under acidic conditions |
CN2009801233468A CN102387710A (en) | 2008-06-20 | 2009-06-19 | Protein hydrolysate compositions stable under acidic conditions |
US12/996,565 US20110097448A1 (en) | 2008-06-20 | 2009-06-19 | Protein Hydrolysate Compositions Stable Under Acidic Conditions |
MX2010014091A MX2010014091A (en) | 2008-06-20 | 2009-06-19 | Protein hydrolysate compositions stable under acidic conditions. |
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WO2020109741A1 (en) * | 2018-11-30 | 2020-06-04 | Roquette Freres | Soluble legume protein |
WO2021023767A1 (en) * | 2019-08-07 | 2021-02-11 | Novozymes A/S | Method of dough relaxation involving endopeptidases |
WO2022167251A1 (en) | 2021-02-04 | 2022-08-11 | Henkel Ag & Co. Kgaa | Detergent composition comprising xanthan lyase and endoglucanase variants with improved stability |
EP4039806A1 (en) | 2021-02-04 | 2022-08-10 | Henkel AG & Co. KGaA | Detergent composition comprising xanthan lyase and endoglucanase variants with im-proved stability |
WO2022251580A1 (en) * | 2021-05-28 | 2022-12-01 | Dupont Nutrition Biosciences Aps | Preparation of plant-based fermented products employing combination of microorganism and protease enzyme, preferably metalloprotease |
Also Published As
Publication number | Publication date |
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CA2726110A1 (en) | 2009-12-23 |
WO2009155557A3 (en) | 2012-10-04 |
US20110097448A1 (en) | 2011-04-28 |
CN102387710A (en) | 2012-03-21 |
RU2011101926A (en) | 2012-07-27 |
EP2299839A2 (en) | 2011-03-30 |
MX2010014091A (en) | 2011-03-21 |
JP2011530274A (en) | 2011-12-22 |
KR20110020929A (en) | 2011-03-03 |
BRPI0909932A2 (en) | 2015-09-01 |
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