Patent US3922375A successfully refreshed from Google Patents.
US3922375A
Expired / Lapsed
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Preparation of a soluble whey protein fraction
Assignee: Nestec SA
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Filing: 1973-07-18
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Granted: 1975-11-25
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Expires: 1993-07-18
Abstract
Abstract A soluble whey protein fraction is prepared by a process which comprises adjusting the pH of an aqueous solution containing proteins isolated from whey which are substantially undenatured by heat to a value of 4.4 to 5.0 to form a precipitate, removing the precipitate, separating lipid/protein complexes from the solution and recovering the filtrate containing a soluble whey protein fraction in solution. The fraction is particularly suitable for incorporation in beverages both for proteinenrichment purposes and as a constituent of a clouding agent.
Inventors
- 👤 Ernesto Dalan
- 👤 Michel John Arthur Groux
- 👤 Jaime Hidalgo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:07
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/52; A23L2/66; A23J; A23J1/00; A23J1/20; A23J1/205; A23V; A23V2002/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
93 words
A PROCESS FOR PREPARING A SOLUBLE WHEY PROTEIN FRACTION WHICH COMPRISES ADJUSTING THE PH OF AN AQUEOUS SOLUTION ISOLATED FROM WHEY BY SUBJECTING A WHEY FRACTION TO ULTRAFILTRATION, MOLECULAR SIEVE FILTRATION OR A COMBINATION THEREOF, SAID SOLUTION CONTAINING PROTEINS WHICH ARE SUBSTANTIALLY UNDENATURED BY HEAT, TO A VALUE OF 4.4 TO 5.0 TO FORM A PRECIPITATE, REMOVING THE PRECIPITATE, SEPARATING LIPID/PROTEIN COMPLEXES FROM THE REMAINING SOLUTION BY MICROFILTRATION WITH A FILTER HAVING A FILTRATION THRESHOLD OF ABOUT 1 MICRON OR LESS AND RECOVERING THE FILTRATE CONTAINING A SOLUBLE WHEY PROTEIN FRACTION IN SOLUTION.
Claim 2
Dependent Claim
93 words
A PROCESS FOR PREPARING A SOLUBLE WHEY PROTEIN FRACTION WHICH COMPRISES ADJUSTING THE PH OF AN AQUEOUS SOLUTION ISOLATED FROM WHEY BY SUBJECTING A WHEY FRACTION TO ULTRAFILTRATION, MOLECULAR SIEVE FILTRATION OR A COMBINATION THEREOF, SAID SOLUTION CONTAINING PROTEINS WHICH ARE SUBSTANTIALLY UNDENATURED BY HEAT, TO A VALUE OF 4.4 TO 5.0 TO FORM A PRECIPITATE, REMOVING THE PRECIPITATE, SEPARATING LIPID/PROTEIN COMPLEXES FROM THE REMAINING SOLUTION BY MICROFILTRATION WITH A FILTER HAVING A FILTRATION THRESHOLD OF ABOUT 1 MICRON OR LESS AND RECOVERING THE FILTRATE CONTAINING A SOLUBLE WHEY PROTEIN FRACTION IN SOLUTION.
Claim 3
Dependent Claim
32 words
A process according to claim 1, in which after removal of the precipitate the pH of the solution is adjusted to a value of not exceeding 3.4 and the solution is sterilised.
Claim 4
Dependent Claim
30 words
A process according to claim 1 in which the soluble protein fraction contained in the filtrate is emulsified in aqueous solution with a vegetable fat and the emulsion is spray-dried.
Claim 5
Dependent Claim
14 words
A process according to claim 3 in which the emulsion is homogenized before spray-drying.
Claim 6
Dependent Claim
23 words
A process according to claim 1 in which the microfiltration is effected with a filter having a filtration threshhold of about 1 micron.
Claim 7
Dependent Claim
98 words
A process for preparing a soluble whey protein fraction whIch comprises adjusting the pH of an aqueous solution obtained by dispersing in water a protein concentrate or isolate obtained from whey by ultrafiltration, molecular sieve filtration, or a combination thereof, said solution containing proteins which are substantially undenatured by heat, to a value of 4.4 to 5.0 to form a precipitate, removing the precipitate, separating lipid/protein complexes from the remaining solution by microfiltration with a filter having a filtration threshhold of about 1 micron or less and recovering the filtrate containing a soluble whey protein fraction in solution.
Claim 8
Dependent Claim
98 words
A process for preparing a soluble whey protein fraction whIch comprises adjusting the pH of an aqueous solution obtained by dispersing in water a protein concentrate or isolate obtained from whey by ultrafiltration, molecular sieve filtration, or a combination thereof, said solution containing proteins which are substantially undenatured by heat, to a value of 4.4 to 5.0 to form a precipitate, removing the precipitate, separating lipid/protein complexes from the remaining solution by microfiltration with a filter having a filtration threshhold of about 1 micron or less and recovering the filtrate containing a soluble whey protein fraction in solution.
Claim 9
Dependent Claim
31 words
A process according to claim 6, in which after removal of the precipitate the pH of the solution is adjusted to a value not exceeding 3.4 and the solution is sterilized.
Claim 10
Dependent Claim
31 words
A process according to claim 6, in which the soluble protein fraction contained in the filtrate is emulsified in aqueous solution with a vegetable fat and the emulsion is spray dried.
Claim 11
Dependent Claim
15 words
A process according to claim 8, in which the emulsion is homogenized before spray drying.
Claim 12
Dependent Claim
23 words
A process according to claim 6 in which the microfiltration is effected with a filter having a filtration threshhold of about 0.5 micron.
References Cited (Backward Citations)
US2606181A
Cited
US3642493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |