US4163010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolation of proteinaceous materials
Assignee: VARIED INVESTMENTS Inc
•
Filing: 1978-04-27
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Granted: 1979-07-31
•
Expires: 1998-04-27
Abstract
Abstract Protein is recovered from corn steep liquor by a process which involves ultrafiltration and precipitation with an alkaline precipitating agent. The recovered protein is acid soluble making it useful in acidic foods.
Inventors
- 👤 John T. Garbutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:20
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
39 words
A process which comprises subjecting corn steep liquor to ultrafiltration to obtain a retentate containing protein, treating the retentate with an alkaline precipitating agent to precipitate non-proteinaceous material in said retentate, and separating the precipitate from said protein-containing retentate.
Claim 2
Dependent Claim
39 words
A process which comprises subjecting corn steep liquor to ultrafiltration to obtain a retentate containing protein, treating the retentate with an alkaline precipitating agent to precipitate non-proteinaceous material in said retentate, and separating the precipitate from said protein-containing retentate.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein after separation of the precipitate the protein-containing retentate is dried.
Claim 4
Dependent Claim
18 words
The process of claim 1 wherein the corn steep liquor is filtered prior to being subjected to ultrafiltration.
Claim 5
Dependent Claim
24 words
The process of claim 1 wherein the corn steep liquor which is subjected to ultrafiltration has a pH value of not substantially above 5.
Claim 6
Dependent Claim
24 words
The process of claim 1 wherein prior to separation of the precipitate, the protein-containing retentate is heated to a temperature above about 75° C.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein the alkaline precipitating agent is calcium hydroxide.
References Cited (Backward Citations)
US3862109A
Cited
US3622556A
Cited
US3922375A
Cited
US3947598A
Cited
US4018752A
Cited
US4028468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-30 | 1983-01-29 | 1983-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-30 | 1987-01-29 | 1987-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-30 | 1991-01-29 | 1991-07-31 | $7700.00 | Window Closed / Lapsed |