US2970086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making dextrose using purified amyloglucosidase
Assignee: Unilever Bestfoods North America
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Filing: 1957-12-30
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Granted: 1961-01-31
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:42
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2405; C12N9/2408; C12N9/2411; C12N9/2428; C12P; C12P19/00; C12P19/20; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A PROCESS FOR PRODUCING DEXTROSE FROM STARCH WHEREIN THE STARCH IN AQUEOUS SYSTEM IS HYDROLYZED WITH AN AMYLOGLUCOSIDASE CONTAINING ENZYME PREPARATION TO MAXIMAL D.E. AND TRUE DEXTROSE CONTENTS, THE HYDROLYZATE IS CLARIFIED, CONCENTRATED BY EVAPORATION, AND ALLOWED TO CRYSTALLIZE, AND THE CRYSTALLIZED DEXTROSE IS SEPARATED FROM THE MOTHER LIQUOR, THE IMPROVEMENT WHICH CONSISTS IN HYDROLYZING THE STARCH WITH AN AMYLOGLUCOSIDASE CONTAINING ENZYME PREPARATION WHICH HAS BEEN PURIFIED BY TREATING AN AQUEOUS SOLUTION OF SAID PREPARATION WITH ABOUT 2 TO ABOUT 5 PERCENT OF A WATER INSOLUBLE HYDROUS SYNTHETIC MAGNESIUM SILICATE, AT A PH OF ABOUT 3.8 TO ABOUT 4.5, THE MIXTURE CENTRIFUGED AND THE LIQUID PHASE CONTAINING THE AMYLOGLUCOSIDASE IS RECOVERED, SAID HYDROLYSIS RESULTING IN A FINAL HYDROLYZATE WHICH HAS MAXIMAL D.E. VALUES OF ABOUT 95 TO 96 PERCENT AND MAXIMAL TRUE DEXTROSE CONTENTS OF ABOUT 93 TO 94 PERCENT, DRY BASIS.
Claim 2
Dependent Claim
143 words
IN A PROCESS FOR PRODUCING DEXTROSE FROM STARCH WHEREIN THE STARCH IN AQUEOUS SYSTEM IS HYDROLYZED WITH AN AMYLOGLUCOSIDASE CONTAINING ENZYME PREPARATION TO MAXIMAL D.E. AND TRUE DEXTROSE CONTENTS, THE HYDROLYZATE IS CLARIFIED, CONCENTRATED BY EVAPORATION, AND ALLOWED TO CRYSTALLIZE, AND THE CRYSTALLIZED DEXTROSE IS SEPARATED FROM THE MOTHER LIQUOR, THE IMPROVEMENT WHICH CONSISTS IN HYDROLYZING THE STARCH WITH AN AMYLOGLUCOSIDASE CONTAINING ENZYME PREPARATION WHICH HAS BEEN PURIFIED BY TREATING AN AQUEOUS SOLUTION OF SAID PREPARATION WITH ABOUT 2 TO ABOUT 5 PERCENT OF A WATER INSOLUBLE HYDROUS SYNTHETIC MAGNESIUM SILICATE, AT A PH OF ABOUT 3.8 TO ABOUT 4.5, THE MIXTURE CENTRIFUGED AND THE LIQUID PHASE CONTAINING THE AMYLOGLUCOSIDASE IS RECOVERED, SAID HYDROLYSIS RESULTING IN A FINAL HYDROLYZATE WHICH HAS MAXIMAL D.E. VALUES OF ABOUT 95 TO 96 PERCENT AND MAXIMAL TRUE DEXTROSE CONTENTS OF ABOUT 93 TO 94 PERCENT, DRY BASIS.
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) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |