Ultrahigh-concentration beer brewing strain and culture medium for screening same

An ultra-high concentration, medium technology, applied in beer brewing, beer fermentation methods, fungi, etc., can solve problems such as difficult flavor, yeast autolysis, and cell morphology and cell activity reduction.
CN101851589AInactive Publication Date: 2010-10-06CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
Publication Date
2010-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention offers a culture medium for ultrahigh-concentration beer brewing strains, a method for screening the strains by using the culture medium, the strains screened by the method and a method for brewing beer with the ultrahigh-concentration beer brewing strains. The culture medium for screening the strain contains components 2-Deoxy-D-glucose. The screening method comprises the steps of acclimatization, cultivation, continuous separation, screening and process evaluation. The strains which are suitable for 20 DEG P ultrahigh-concentration wort and have the abilities of resisting 2-Deoxy-D-glucose and alcohol and deoxidizing diacetyl can be screened. By using the strains and method provided by the invention, the utilization rate of equipment can be greatly improved, and the production cost can be reduced. Compared with the beer fermented at normal concentration, the beer produced in the invention has better flavour and better taste.
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Description

technical field

[0001] The present invention relates to a super-high-concentration beer brewing strain, a screening method thereof and a culture medium used therein. The preferred strain is suitable for the beer brewing process in which the ultra-high-concentration beer has an original wort concentration above 20°P . Background technique

[0002] Brewing beer with super high concentration is a new topic in our country and even in Germany. High-concentration beer brewing (High Gravity Brewing) refers to the higher wort concentration (15°P-18°P) obtained by saccharification during the beer brewing process, and diluted with water to the normal concentration (10-12°P) in the process after saccharification P). The wort above 18°P is called VHG wort (Very High Gravity), that is, ultra-high concentration wort. The use of high-concentration post-brewing dilution technology can greatly improve the utilization rate of saccharification and fermentation equipment, and can increase ou...

Claims

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