US3579496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective extraction process producing protein isolates from oilseed meals using water or divalent metal salts as extracting agents
Assignee: United States Department of Agriculture
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Filing: 1969-07-17
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Granted: 1971-05-18
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Expires: 1989-07-17
Abstract
Abstract A PROCESS FOR EXTRACTING SELECTIVELY PROTEIN FRACTIONS FROM OILSEED FLOUR WHICH PROCESS COMPRISES A PRELIMINARY EXTRACTION WITH WATER OF A DILUTE (.008 M) POLYVALENT CATIONIC SALT SOLUTION AND SUBSEQUENTLY WITH AQUEOUS BASE (.015 N SODIUM HYDROXIDE). THE PROTEIN ISOLATES THUS EXTRACTED DIFFER IN COMPOSITION, AVERAGE MOLECULAR WEIGHT AND SOLUBILITY CHARACTERISTICS. WITH CERTAIN OILSEEDS, THE DISCLOSED PROCESS PROVIDES FOR THE RECOVERY OF SOMEWHAT MORE OF THE TOTAL NITROGEN FROM THE FLOUR BEING PROCESSED AND FOR AN IMPROVED FLAVOR AND COLOR IN THE MAJOR ISOLATE THAN DOES A CONVENTIONAL SINGLE-STEP ALKALINE EXTRACTION PROCESS.
Inventors
- 👤 Leah C Berardi
- 👤 Wilda H Martinez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:16
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |