US3868307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of distillers yeast
Assignee: Hiram Walker and Sons Inc
•
Filing: 1973-08-15
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Granted: 1975-02-25
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Expires: 1993-08-15
Abstract
Abstract Distillers yeast is produced by a process which results in more rapid yeast growth, higher cell concentrations and greatly extended yeast viability. The process involves propagating yeast on a culture medium of cooked cereal grain mash which has been subjected to enzymatic action of glucamylase obtained from fungi of the genus Aspergillus. After propagation, as a result of substantially longer viability, the yeast can be stored in the culture medium for up to 3 days or longer with portions being withdrawn from time to time for inoculating distillery grain mashes.
Inventors
- 👤 Lanen James M Van
- 👤 Merritt B Smith
- 👤 Weldon F Maisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:39
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/14; C12N1/16; C12N1/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
233 words
A METHOD OF PROPAGATING DISTILLERS YEAST COMPRISING THE STEPS OF: PREPARING A COOKED MASH OF GROUND CERAL GRAIN IN WATER WITH THE CEREAL GRAIN COMPRISING AT LEAST 94% BY WEIGHT OF A NUMBER SELECTED FROM THE GROUP CONSISTING OF CORN, MILO, AND MIXTURES THEREOF; ADDING TO THE MASH GLUCAMYLASE FERMENT PRODUCED BY THE SUBMERGED, AEROBIC FERMENTATION OF A CEREAL GRAIN MASH WITH A GLUMYLASE PRODUCING MOLD STRAIN SELECTED FROM THE GROUP CONSISTING OF A. NIGER. A. FOETIDUS. A. AWAMORI. AND A. ORYZAE WITH ABOUT 1,000-20,000 UNITS OF GLUCAMYLASE FERMENT PE ER BUSHEL OF GRAIN BEING USED TO TREAT THE CEREAL GRAIN MASH; INCUBATING THE RESULTING MIXTURE OF MASH AND GLUMACYLASE FERMENT AT A TEMPERATURE OF ABOUT 120*-140*F FOR ABOUT 4-6 HOURS; STERILIZING THE MASHED; COOLING THE RESULTING STERILIZED MASH TO ABOUT 80*F; INOCULATING THE RSULTING COOLED STERILIZED MASH WITH DISTILLERS YEAST; INCUBATING THE INOCULATED MASH UNTIL THE BALLING OF THE MASH HAS DROPPED ABOUT 4*-5*; COOLING THE RESULTING YEAST CULTURE TO A TEMPERATURE OF NO MORE THAN ABOUT 60*F; MAINTAINING THE YEAST CULTURE IN THE MASH IN WHICH IT WAS PROPAGATED AT A TEMPERATURE OF NO MORE THAN ABOUT 60*F., AND STORING THE YEAST AT SAID TEMPERATURE OF NO MORE THAN ABOUT 60*F. IN THE MASH IN WHICH IT WAS PROPAGATED FOR AT LEAST ABOUT 72 HOURS AND DURING STORAGE WITHDRAWING PORTIONS OF YEAST PERIODICALLY TO INOCULATE DISTILLERY GRAINS MASHES FOR ALCOHOL PRODUCTION.
Claim 2
Independent Claim
233 words
A METHOD OF PROPAGATING DISTILLERS YEAST COMPRISING THE STEPS OF: PREPARING A COOKED MASH OF GROUND CERAL GRAIN IN WATER WITH THE CEREAL GRAIN COMPRISING AT LEAST 94% BY WEIGHT OF A NUMBER SELECTED FROM THE GROUP CONSISTING OF CORN, MILO, AND MIXTURES THEREOF; ADDING TO THE MASH GLUCAMYLASE FERMENT PRODUCED BY THE SUBMERGED, AEROBIC FERMENTATION OF A CEREAL GRAIN MASH WITH A GLUMYLASE PRODUCING MOLD STRAIN SELECTED FROM THE GROUP CONSISTING OF A. NIGER. A. FOETIDUS. A. AWAMORI. AND A. ORYZAE WITH ABOUT 1,000-20,000 UNITS OF GLUCAMYLASE FERMENT PE ER BUSHEL OF GRAIN BEING USED TO TREAT THE CEREAL GRAIN MASH; INCUBATING THE RESULTING MIXTURE OF MASH AND GLUMACYLASE FERMENT AT A TEMPERATURE OF ABOUT 120*-140*F FOR ABOUT 4-6 HOURS; STERILIZING THE MASHED; COOLING THE RESULTING STERILIZED MASH TO ABOUT 80*F; INOCULATING THE RSULTING COOLED STERILIZED MASH WITH DISTILLERS YEAST; INCUBATING THE INOCULATED MASH UNTIL THE BALLING OF THE MASH HAS DROPPED ABOUT 4*-5*; COOLING THE RESULTING YEAST CULTURE TO A TEMPERATURE OF NO MORE THAN ABOUT 60*F; MAINTAINING THE YEAST CULTURE IN THE MASH IN WHICH IT WAS PROPAGATED AT A TEMPERATURE OF NO MORE THAN ABOUT 60*F., AND STORING THE YEAST AT SAID TEMPERATURE OF NO MORE THAN ABOUT 60*F. IN THE MASH IN WHICH IT WAS PROPAGATED FOR AT LEAST ABOUT 72 HOURS AND DURING STORAGE WITHDRAWING PORTIONS OF YEAST PERIODICALLY TO INOCULATE DISTILLERY GRAINS MASHES FOR ALCOHOL PRODUCTION.
Claim 3
Dependent Claim
38 words
A method, as claimed in claim 1, wherein the cereal grain further comprises an enzymatic material selected from the group consisting of malted cereal Grain and microbial amylase in an amount sufficient to liquify and thin the mash.
Claim 4
Dependent Claim
26 words
A method, as claimed in claim 1, wherein the pH of the mash is adjusted to a level no higher than about 5.0 prior to sterilization.
Claim 5
Dependent Claim
49 words
A method, as claimed in claim 3, wherein the pH is adjusted by inoculating the mash with lactic acid producing bacteria, with the mash to which the glucamylase ferment and the bacteria have been added being incubated for at least about 4-6 hours at a temperature of about 122*-125*F.
Claim 6
Dependent Claim
38 words
A method, as claimed in claim 3, wherein the pH is adjusted by adding to the mash a member selected from the group consisting of stillage, sulfuric acid, hydrochloric acid, lactic acid, and phosphoric acid or mixtures thereof.
Claim 7
Dependent Claim
34 words
In the process for producing whiskey and spirits, the improvement comprising inoculating the cereal grain mash with about 0.5-2.0% by volume of a yeast culture produced in accordance with the method of claim 1.
References Cited (Backward Citations)
US2790718A
Cited
US3418211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |