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US3943266A Expired / Lapsed US ⏱️ 0.0 years remaining

Dried tofu powder

Assignee: General Foods Corp
•
Filing: 1974-04-10
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Granted: 1976-03-09
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Expires: 1994-04-10
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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 18:40
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)

US2785155A Cited
US3399997A Cited
US3794735A Cited
US3723407A Cited

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

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