US3943266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dried tofu powder
Assignee: General Foods Corp
•
Filing: 1974-04-10
•
Granted: 1976-03-09
•
Expires: 1994-04-10
Abstract
Abstract A soy milk is precipitated and the resulting whey is centrifugally separated from the curd and washed, whereupon the curd is colloidally dispersed and spray dried.
Inventors
- 👤 Joseph John Halik
- 👤 Esra Pitchon
- 👤 Marvin Schulman
- 👤 Milton H. Schwarz
- 👤 Milton Yezek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:10
CPC Classifications
A; A23; A23L; A23L11/00; A23L11/05; A23L11/07; A23L11/40; A23L11/45
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
Process of recovering a stable nutritious soy protein product which comprises hydrating soybeans; grinding said hydrated soybeans to form a mash and autoclaving said soy bean mash under conditions and for a period of time to extract a soy milk from the soybean mash while inactivating the lipoxydase content thereof; said soy milk being extracted from said soybean mash during said autoclaving over a period of at least five minutes; separating said extracted milk from the soybean mash; salt-precipitating the milk to yield a coprecipitate of protein-oil curd and whey; centrifuging the coprecipitate and whey to develop distinct curdbed and whey phases wherein a major depth of the bed exists as a continuous cohesive matrix; centrifugally skimming the whey phase and associated water soluble components, washing the centrifugally separated curd to an extent sufficient to remove residual whey solids, excess precipitating chemicals and polysaccahrides therefrom; subdividing the curd and forming a dispersion of curd particles; and spray drying said dispersion.
Claim 2
Dependent Claim
160 words
Process of recovering a stable nutritious soy protein product which comprises hydrating soybeans; grinding said hydrated soybeans to form a mash and autoclaving said soy bean mash under conditions and for a period of time to extract a soy milk from the soybean mash while inactivating the lipoxydase content thereof; said soy milk being extracted from said soybean mash during said autoclaving over a period of at least five minutes; separating said extracted milk from the soybean mash; salt-precipitating the milk to yield a coprecipitate of protein-oil curd and whey; centrifuging the coprecipitate and whey to develop distinct curdbed and whey phases wherein a major depth of the bed exists as a continuous cohesive matrix; centrifugally skimming the whey phase and associated water soluble components, washing the centrifugally separated curd to an extent sufficient to remove residual whey solids, excess precipitating chemicals and polysaccahrides therefrom; subdividing the curd and forming a dispersion of curd particles; and spray drying said dispersion.
Claim 3
Dependent Claim
12 words
Process of claim 1 wherein the centrifugally separated curd is centrifugally washed.
Claim 4
Dependent Claim
15 words
Process of claim 2 wherein each centrifugation is conducted at in excess of 500 g's.
Claim 5
Dependent Claim
7 words
Product of the process of claim 1.
Claim 6
Dependent Claim
14 words
The process of claim 3 wherein the milk is precipitated by a calcium salt.
Claim 7
Dependent Claim
11 words
The process of claim 5 wherein the salt comprises calcium sulphate.
Claim 8
Dependent Claim
21 words
The process of claim 1 wherein the soy milk is extracted at a temperature exceeding 170°F. for at least 15 minutes.
Claim 9
Dependent Claim
19 words
The process of claim 1 wherein the curd is spray dried using an inlet air drying temperature below 500°F.
Claim 10
Dependent Claim
18 words
The process of claim 8 wherein the curd is subdivided in a colloid mill preparatory to spray drying.
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) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |