Saccharomyces cerevisiae mutant strain and application thereof

Abstract

The invention discloses a saccharomyces cerevisiae mutant strain and application thereof. The preservation number of the saccharomyces cerevisiae mutant strain is CGMCC 10572. Experiments show that the saccharomyces cerevisiae CGMCC NO.10572 can evidently enhance the reducing capacity of diacetyl, increase volatile ester content, lower higher alcohol content and increase beer flavor quality. The saccharomyces cerevisiae mutant strain has the advantages that a new method for applying space mutation to saccharomyces cerevisiae breeding is explored, and a precedent for applying space mutation breeding to beer production is set.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a mutagenic strain of Saccharomyces cerevisiae and an application thereof. Background technique [0002] Space breeding, also known as space mutation breeding, is to use high-altitude balloons, returnable satellites, spacecraft and other spacecraft to carry crop seeds, tissues, organs or living individuals into space, and use the special environment of space to mutate biological genes and The process of selecting excellent strains by obtaining stable physiological and genetic traits through ground selection. [0003] In the field of beer production, how to improve the quality of beer, shorten the fermentation cycle, reduce production costs and reduce environmental pollution are important scientific research goals for beer production enterprises. Breeding and improving beer brewing yeast is also one of the channels to achieve the above goals. At present, the commonly use...

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Problems solved by technology

At present, the commonly used microbial improvement methods mainly include: ultraviolet mutagenesis, ion implantation mutagenesis, protoplast fusion, genetic eng

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