US4293571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of a purified protein hydrolysate
Assignee: Nestec SA
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Filing: 1980-02-28
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Granted: 1981-10-06
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Expires: 2000-02-28
Abstract
Abstract The present invention relates to a process in which an aqueous solution of proteins is subjected to hydrolysis, the product of hydrolysis is subjected to a heat treatment to denature the proteins which it contains and, finally, the proteins are eliminated by ultrafiltration. The ultrafiltration permeate constitutes the purified protein hydrolysate.
Inventors
- 👤 Mats Olofsson
- 👤 Marcel Buhler
- 👤 Robert Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:47
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
90 words
A process for the preparation of a purified protein hydrolysate comprising: (a) subjecting an aqueous solution of proteins to a hydrolysis treatment to yield at least hydrolysate products free of original protein and protein fragments capable of acting as allergens; (b) subjecting the treated aqueous solution to a heat treatment to denature the proteins not hydrolysed in step (a); and (c) eliminating the denatured proteins from the heat treated hydrolysate by ultrafiltration and obtaining an ultrafiltration permeate constituting the purified protein hydrolysate free of said original protein and protein fragments.
Claim 2
Dependent Claim
90 words
A process for the preparation of a purified protein hydrolysate comprising: (a) subjecting an aqueous solution of proteins to a hydrolysis treatment to yield at least hydrolysate products free of original protein and protein fragments capable of acting as allergens; (b) subjecting the treated aqueous solution to a heat treatment to denature the proteins not hydrolysed in step (a); and (c) eliminating the denatured proteins from the heat treated hydrolysate by ultrafiltration and obtaining an ultrafiltration permeate constituting the purified protein hydrolysate free of said original protein and protein fragments.
Claim 3
Dependent Claim
16 words
A process as claimed in claim 1, wherein the hydrolysis carried out is an enzymatic hydrolysis.
Claim 4
Dependent Claim
17 words
A process as claimed in claim 2, wherein the enzyme employed in the enzymatic hydrolysis is pancreatin.
Claim 5
Dependent Claim
26 words
A process as claimed in claim 1, wherein the heat treatment is carried out at 100° to 140° C. for between 10 seconds and 4 minutes.
Claim 6
Dependent Claim
25 words
A process as claimed in claim 1, wherein the heat treatment is carried out at 75° to 100° C. for between 2 and 60 minutes.
Claim 7
Dependent Claim
29 words
A process as claimed in claim 1, wherein the aqueous solution which has undergone hydrolysis is passed through a colloid mill between the heat treatment and the ultrafiltration step.
Claim 8
Dependent Claim
16 words
A process as claimed in claim 1, wherein the ultrafiltration step is carried out by diafiltration.
Claim 9
Dependent Claim
24 words
A process as claimed in claim 1, wherein the ultrafiltration step is carried out with membranes having cut-off zone of from 1,000 to 10,000.
Claim 10
Dependent Claim
11 words
The purified hydrolysate prepared by the process claimed in claim 1.
Claim 11
Dependent Claim
15 words
A food product comprising the purified protein hydrolysate prepared by the process of claim 1.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |