Brewing yeast strain, breeding method thereof, and application of the strain in alcohol production

A technology of Saccharomyces cerevisiae and alcohol, applied in the direction of microorganism-based methods, biochemical equipment and methods, fermentation, etc., can solve the problems of high environmental load, low technical level, low fermentation efficiency, etc., and achieve high resistance to ethanol toxicity , Strong fermentation ability, fast growth effect
CN101845404AInactive Publication Date: 2010-09-29GUANGXI ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGXI ACAD OF SCI
Publication Date
2010-09-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a brewing yeast strain, which has the classified name Saccharomyces cerevisiae Y09tj, and is preserved in Common Microorganism Center of China General Microbiological Culture Collection Center with the preservation number of CGMCC No.3476. The invention also provides a breeding method for the strain and a method for producing ethanol by quick high-temperature thick mash fermentation of starch. The strain is obtained by the following steps of: separating from common self-brewed sweet wine of peasant families; and performing ultraviolet mutagenesis for breeding. The brewing yeast strain CGMCC NO.3476 has the advantages of quick growth, strong fermentation capacity, high ethanol toxin resistance, and high-glucose concentration resistance of 62 percent (m / v) to the maximum. The average wine yield by the method is improved by 1.2 percent than that of other producing strains, and the wine yield can reach 16.0 percent (v / v); the fermentation period is short, and only 46 hours; the equipment utilization rate can be greatly improved; and the fermentation cost is greatly reduced.
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Description

technical field

[0001] The invention relates to a Saccharomyces cerevisiae strain capable of rapid growth and suitable for high-temperature concentrated mash fermentation to produce alcohol and a breeding method thereof, and a method for producing fuel ethanol by using the strain to ferment starch with high-temperature concentrated mash, belonging to the technical field of industrial microbial fermentation engineering. Background technique

[0002] The world's oil resources are becoming increasingly depleted, and it is a new energy strategy of the country to vigorously develop and use fuel alcohol. The research and successful industrialization of cassava fuel alcohol has great strategic significance and social benefits. At present, most of cassava raw materials to produce fuel ethanol are fermented with intermittent dilute mash, which has problems such as low technical level, low fermentation efficiency, large energy consumption, large environmental load and economic efficie...

Claims

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