US4990344A
Expired / Lapsed
US
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Method for making soluble rice protein concentrate and the product produced therefrom
Assignee: Bristol Myers Co
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Filing: 1989-07-11
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Granted: 1991-02-05
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Expires: 2009-07-11
Abstract
Abstract This invention concerns a process for preparing soluble rice protein concentrate with reduced levels of manganese, aluminum, selenium and phytic acid and improved digestibility from rice raw material comprising: digesting the raw material reduced in particle size to permit efficient enzyme action in an aqueous medium with an alpha-amylase enzyme at an operable pH and temperature for a period of time sufficient to solubilize a substantial portion of the rice starch and form a liquid slurry; heating the rice starch slurry at 105° C. to 130° C. for 30 to 60 seconds; separating the high protein rice flour from the rice syrup; treating a slurry of the high protein rice flour with a protease enzyme at an operable pH and temperature in an amount and for a period of time to solubilize the rice protein: clarifying the protease treated slurry to provide a soluble rice protein concentrate with reduced manganese, aluminum, selenium and phytic acid and improved digestibility. The soluble rice protein concentrate contains more the 16% protein on a solids basis, and has on a per gram protein basis, a manganese content of 50 microgram or less, an aluminum content of less than 15 microgram, a selenium content reduces a minimum of 25% relative to rice raw material and a phytic acid content of less than 15 mg, and a protein digestibility of greater than 90%.
Inventors
- 👤 John R. Euber
- 👤 Gabor Puski
- 👤 Grant H. Hartman, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:23
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/12; A23J3/00; A23J3/30; A23J3/32; A23J3/34; A23J3/346; A23V; A23V2002/00; Y; Y10; Y10S; Y10S426/00; Y10S426/801
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
16 words
Soluble rice protein concentrate having a protein content of more than 16% on a solids basis.
Claim 2
Dependent Claim
16 words
Soluble rice protein concentrate having a protein content of more than 16% on a solids basis.
Claim 3
Dependent Claim
19 words
Soluble rice protein concentrate of claim 1 having a protein content of 16% to 90% on a solids basis.
Claim 4
Dependent Claim
19 words
Soluble rice protein concentrate of claim 1 having a manganese content of less than 50 microgram per gram protein.
Claim 5
Dependent Claim
19 words
Soluble rice protein concentrate of claim 1 having an aluminum content of less than 15 microgram per gram protein.
Claim 6
Dependent Claim
25 words
Soluble rice protein concentrate of claim 1 having a selenium content reduced a minimum of 25% on a protein basis relative to rice raw material.
Claim 7
Dependent Claim
20 words
Soluble rice protein concentrate of claim 1 having a phytic acid content of less than 15 milligram per gram protein.
Claim 8
Dependent Claim
20 words
Soluble rice protein concentrate of claim 1 having a phytic acid content of less than 5 milligram per gram protein.
Claim 9
Dependent Claim
14 words
Soluble rice protein concentrate of claim 1 having protein digestibility of greater than 90%.
Claim 10
Dependent Claim
168 words
A process for preparing soluble protein rice concentrate from rice raw material containing manganese, aluminum, selenium and phytic acid consisting essentially of the steps: (a) digesting the raw material reduced in particle size to permit efficient enzyme action in an aqueous medium with an alpha-amylase enzyme at an operable pH and temperature for a period of time sufficient to solubilize a substantial portion of the rice starch and form a liquid slurry; (b) heating the slurry at 105° C. to 130° C. for 30 to 60 seconds; (c) separating the insoluble high protein rice flour fraction from the solubilized rice carbohydrate; (d) treating a slurry of the high protein rice flour with a protease enzyme at an operable pH and temperature in an amount and for a period of time to solubilize rice protein; (e) separating the solubilized rice protein from insoluble rice residue at pH 6 to 8 to provide a soluble rice protein concentrate with improved digestibility and reduced manganese, aluminum, selenium and phytic acid content.
Claim 11
Dependent Claim
168 words
A process for preparing soluble protein rice concentrate from rice raw material containing manganese, aluminum, selenium and phytic acid consisting essentially of the steps: (a) digesting the raw material reduced in particle size to permit efficient enzyme action in an aqueous medium with an alpha-amylase enzyme at an operable pH and temperature for a period of time sufficient to solubilize a substantial portion of the rice starch and form a liquid slurry; (b) heating the slurry at 105° C. to 130° C. for 30 to 60 seconds; (c) separating the insoluble high protein rice flour fraction from the solubilized rice carbohydrate; (d) treating a slurry of the high protein rice flour with a protease enzyme at an operable pH and temperature in an amount and for a period of time to solubilize rice protein; (e) separating the solubilized rice protein from insoluble rice residue at pH 6 to 8 to provide a soluble rice protein concentrate with improved digestibility and reduced manganese, aluminum, selenium and phytic acid content.
Claim 12
Dependent Claim
24 words
The process of claim 9 wherein the separated soluble rice protein concentrate has a protein content of more than 16% on a solids basis.
Claim 13
Dependent Claim
25 words
The process of claim 9 wherein the separated soluble rice protein concentrate has a protein content of from 16% to 90% on a solids basis.
Claim 14
Dependent Claim
24 words
The process of claim 9 wherein the separated soluble rice protein concentrate has a manganese content of less than 50 micrograms per gram protein.
Claim 15
Dependent Claim
24 words
The process of claim 9 wherein the separated soluble rice protein concentrate has an aluminum content of less than 15 microgram per gram protein.
Claim 16
Dependent Claim
29 words
The process of claim 9 wherein the separated soluble rice protein concentrate selenium content is reduced a minimum of 25% on a protein basis relative to rice raw material.
Claim 17
Dependent Claim
25 words
The process of claim 9 wherein the separated soluble rice protein concentrate has a phytic acid content of less than 15 milligram per gram protein.
Claim 18
Dependent Claim
25 words
The process of claim 9 wherein the separated soluble rice protein concentrate has a phytic acid content of less than 5 milligrams per gram protein.
Claim 19
Dependent Claim
20 words
The process of claim 9 wherein the separated soluble rice protein concentrate has a protein digestibility of greater than 90%.
Claim 20
Dependent Claim
18 words
The process of claim 9 wherein the rice raw material is hydrolyzed to 5 to 50 DE content.
Claim 21
Dependent Claim
16 words
The process of claim 9 wherein the rice starch slurry is heated by direct steam injection.
Claim 22
Dependent Claim
22 words
The process of claim 9 wherein the rice starch slurry is heated by direct steam injection at 105°-130° C. for 30-60 seconds.
Claim 23
Dependent Claim
25 words
The process of claim 9 wherein the rice starch slurry is heated by direct steam injection at 110° C. to 120° C. for 40-50 seconds.
Claim 24
Dependent Claim
81 words
A liquid ready-to-use nutritionally complete infant formula wherein protein is provided by soluble rice protein concentrate having a protein content of more than 16% on a solids basis, a manganese content of less than 50 microgram per gram protein, an aluminum content of less than 15 microgram per gram protein, a selenium content of less than 3 microgram per gram protein, a phytic acid content of less than 15 milligram per gram protein and wherein protein digestibility is greater than 90%.
Claim 25
Dependent Claim
81 words
A liquid ready-to-use nutritionally complete infant formula wherein protein is provided by soluble rice protein concentrate having a protein content of more than 16% on a solids basis, a manganese content of less than 50 microgram per gram protein, an aluminum content of less than 15 microgram per gram protein, a selenium content of less than 3 microgram per gram protein, a phytic acid content of less than 15 milligram per gram protein and wherein protein digestibility is greater than 90%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |