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A strain st26-7 for brewing beer by using space mutagenesis of Saccharomyces cerevisiae and method

A technology for Saccharomyces cerevisiae and beer, which is applied to beer brewing, microorganism-based methods, biochemical equipment and methods, etc., can solve the problems of high cost and large dosage, and achieves low diacetyl content, lively aroma, flavor and texture. excellent effect

Active Publication Date: 2022-02-25
FULLARTON BIOENG TECH BEIJING CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the yeasts used by most domestic breweries are imported commercial yeast direct-throwing starters, which not only cost a lot, but also use a large amount

Method used

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  • A strain st26-7 for brewing beer by using space mutagenesis of Saccharomyces cerevisiae and method
  • A strain st26-7 for brewing beer by using space mutagenesis of Saccharomyces cerevisiae and method
  • A strain st26-7 for brewing beer by using space mutagenesis of Saccharomyces cerevisiae and method

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Embodiment 1

[0056] Example 1. Screening of strains with excellent fermentation performance of space-induced mutagenesis Saccharomyces cerevisiae

[0057] 1. Strains

[0058] Space mutagenesis of Saccharomyces cerevisiae ST26: The space mutagenesis strain returned by the ground Saccharomyces cerevisiae GT26 via Tiangong-2 and Shenzhou-11 spacecraft, preserved in Fullerton Bioengineering Technology (Beijing) Co., Ltd. Aerospace Microbial Strain Bank. In order to distinguish the strain difference before and after space launch, the space-mutated strain of Saccharomyces cerevisiae GT26 on the ground after space launch was labeled as space-mutated Saccharomyces cerevisiae (Saccharomyces cerevisiae) ST26.

[0059] 2. Separation and purification of Saccharomyces cerevisiae with space-induced mutagenesis

[0060] Place the ground Saccharomyces cerevisiae GT26 glycerin preservation tubes frozen at -80°C and the space-mutated Saccharomyces cerevisiae ST26 glycerin preservation tubes at 4°C for slo...

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Abstract

The invention discloses a strain ST26-7 and a method for brewing beer by utilizing space mutagenesis of Saccharomyces cerevisiae. The strain ST26-7 disclosed by the present invention for brewing beer by space-mutating Saccharomyces cerevisiae is a strain with the preservation number CGMCC No. 19248 in the General Microbiology Center of China Microbiological Culture Collection Management Committee. The present invention adopts high-quality Saccharomyces cerevisiae for brewing wine and undergoes space mutagenesis to screen out the yeast ST26-7 with excellent fermentation performance suitable for brewing beer. This strain is not only suitable for low-temperature fermentation, but also has a low ability to produce diacetyl. And the taste, flavor and texture of the wine body are better, which is of great significance to reducing the diacetyl content, improving the quality of the wine body, shortening the storage time of wine, and improving the economic benefits of beer companies.

Description

technical field [0001] The invention relates to the field of biotechnology, a strain ST26-7 and a method for brewing beer by utilizing space mutagenesis Saccharomyces cerevisiae. Background technique [0002] Saccharomyces cerevisiae is a single-celled eukaryotic microorganism that mainly reproduces by budding. Under the microscope, the cells of the bacteria are oval or oval, solitary, budding at one end, and facultative anaerobic bacteria. The colony on the YEPD medium plate is round, with a size of 4-6 mm, convex surface, smooth and moist, neat edges, sticky texture, opaque, milky white in color, and typical wine aroma. Saccharomyces cerevisiae with excellent fermentation performance for beer production not only has fast reproduction speed, can tolerate high sugar content and alcohol content as well as low temperature and pH, but also has fast fermentation speed and low diacetyl production. Flocculation is the characteristic of yeast sedimentation during beer fermentation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/16C12C12/00C12R1/865
CPCC12N1/16C12C12/006C12R2001/865C12N1/185
Inventor 郝红炜刘慧袁明张红星谢远红
Owner FULLARTON BIOENG TECH BEIJING CO LTD
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