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Preparation method and application of microbial agent composition for enhancing secondary fermentation of bean paste

The invention relates to the field of bioengineering, in particular to a preparation method and an application of a microbial agent composition for enhancing secondary fermentation of a bean paste. The microbial agent composition consists of a saccharomycetes agent, an aspergillus oryzae agent and a pleospora agent; and the three microbial agents are prepared, and then the prepared microbial agents are mixed with the secondary-fermented bean paste, so as to promote the secondary fermentation of the bean paste. The whole process of the preparation method of the microbial agent composition provided by the invention is applicable to continuous industrial production; by-products (chili and radix platycodonis), from the production of Pixian bean paste, are comprehensively utilized; a production cycle can be shortened by 6 months, the content of amino nitrogen can be improved by 20% and the content of volatile aroma-producing components can be improved by more than 3 times (the contents of total ester, total acid and total aldehyde); by inoculating aflatoxin B1 with the saccharomycetes agent at a production peak (after being fermented for 30-60 days), an ester producing and aroma generating process can be enhanced, the metabolism of aspergillus flavus and partial aspergillus parasiticus can be competitively inhibited and the content of the aflatoxin B1 can be reduced, and the content of the aflatoxin B1 is lower than 0.5ppm, so that food safety is enhanced.
Owner:XIHUA UNIV
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