US4145455A
Expired / Lapsed
US
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Modified protein compositions and preparation thereof
Assignee: Fuji Oil Co Ltd (fka Fuji Oil Holdings Inc)
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Filing: 1976-04-05
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Granted: 1979-03-20
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Expires: 1996-04-05
Abstract
Abstract A modified protein composition which is produced by contacting a water-soluble protein, such as plant seed proteins, cow milk protein, animal meat proteins, fish meat proteins, egg proteins and microorganisms proteins, with a cysteine-enriched plastein in an amount of at least 1% by weight on the basis of the water-soluble protein in an aqueous medium, and if desired, heating the resultant under a mild condition (e.g. at a temperature of 40 DEG to 90 DEG C.), said cysteine-enriched plastein being produced by hydrolyzing a protein with an enzyme having an endopeptidase activity and subjecting the hydrolyzate to dehydration-condensation with a protease having an esterase activity in the presence of an activated cysteine (e.g. lower alkyl cysteinate, N-acetyl-L-cysteine or L-cysteinyl-L-cysteine).
Inventors
- 👤 Masao Fujimaki
- 👤 Soichi Arai
- 👤 Michiko Watanabe
- 👤 Yukio Hashimoto
- 👤 Akira Kurooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:02
CPC Classifications
C; C08; C08L; C08L89/00; A; A23; A23C; A23C20/00; A23J; A23J3/00; A23J3/30; A23J3/32; A23J3/34; A23L; A23L15/00; A23L15/20; C08H; C08H1/00; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
A protein composition which is prepared by mixing a cysteine-enriched plastein containing about 5% by weight or more of half-cystine with a protein selected from the group consisting of plant seed protein, cow milk protein, animal meat protein, fish meat protein, egg protein and microorganism protein, in a ratio such that the amount of the cysteine-enriched plastein is at least 1% by weight based on the weight of the protein, dissolving or dispersing the resultant mixture in water, and heating the resultant solution or dispersion at a temperature of 40°-90° C.
Claim 2
Dependent Claim
91 words
A protein composition which is prepared by mixing a cysteine-enriched plastein containing about 5% by weight or more of half-cystine with a protein selected from the group consisting of plant seed protein, cow milk protein, animal meat protein, fish meat protein, egg protein and microorganism protein, in a ratio such that the amount of the cysteine-enriched plastein is at least 1% by weight based on the weight of the protein, dissolving or dispersing the resultant mixture in water, and heating the resultant solution or dispersion at a temperature of 40°-90° C.
Claim 3
Dependent Claim
13 words
The composition according to claim 1, wherein the protein is plant seed protein.
Claim 4
Dependent Claim
14 words
The composition according to claim 2, wherein the plant seed protein is soybean protein.
Claim 5
Dependent Claim
29 words
The composition according to claim 2, wherein the amount of the cysteine-enriched plastein is about 5% by weight or more based on the weight of the plant seed protein.
Claim 6
Dependent Claim
51 words
A protein composition which is prepared by mixing a cysteine-enriched plastein containing about 5% by weight or more of half-cystine with an egg protein to obtain a uniform mixture in which the amount of the cysteine-enriched plastein is at least 1% by weight based on the weight of the egg protein.
Claim 7
Dependent Claim
51 words
A protein composition which is prepared by mixing a cysteine-enriched plastein containing about 5% by weight or more of half-cystine with an egg protein to obtain a uniform mixture in which the amount of the cysteine-enriched plastein is at least 1% by weight based on the weight of the egg protein.
Claim 8
Dependent Claim
28 words
The composition according to claim 5, wherein the amount of the cysteine-enriched plastein is about 5% by weight or more based on the weight of the egg protein.
Claim 9
Independent Claim
98 words
A method of promoting the gellation or foaming property of a protein selected from the group consisting of plant seed protein, cow milk protein, animal meat protein, fish meat protein, egg protein and microorganism protein, which comprises mixing a cysteine-enriched plastein containing about 5% by weight or more of half-cystine with the protein, in a ratio such that the amount of the cysteine-enriched plastein is at least 1% by weight based on the weight of the protein, dissolving or dispersing the resultant mixture in water, and heating the resultant solution or dispersion at a temperature of 40°-90° C.
Claim 10
Independent Claim
98 words
A method of promoting the gellation or foaming property of a protein selected from the group consisting of plant seed protein, cow milk protein, animal meat protein, fish meat protein, egg protein and microorganism protein, which comprises mixing a cysteine-enriched plastein containing about 5% by weight or more of half-cystine with the protein, in a ratio such that the amount of the cysteine-enriched plastein is at least 1% by weight based on the weight of the protein, dissolving or dispersing the resultant mixture in water, and heating the resultant solution or dispersion at a temperature of 40°-90° C.
References Cited (Backward Citations)
US3803327A
Cited
US3966985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |