Lactic acid bacteria for efficiently degrading nitrite and application thereof in pickling salt

Abstract

The invention belongs to the field of biotechnology, and particularly discloses lactic acid bacteria for efficiently degrading nitrite and application thereof in pickling salt.The classification of the lactic acid bacteria is named as Lactobacillus plantarum, the strain of the Lactobacillus plantarum is preserved in China Center for Type Culture Collection with the preservation number being CCTCC NO: M 2015184, the acid production speed of the stain of the Lactobacillus plantarum in 48 h is 3.0*10<-2>-4.0*10<-2> g/100 mL.h, and the nitride degradation rate is 88.0-98.0%.The lactic acid bacteria strain obtained through screening is strong in acid production capacity and capable of efficiently degrading nitride, is prepared into a live bacteria agent through spray drying and added into salt to be prepared into pickling salt used for pickled vegetable pickling, has the advantages that lactic acid fermentation is rapid and nitrite degradation ability is high, and the pickled vegetable eating safety can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of bioengineering, in particular to a lactic acid bacterium for efficiently degrading nitrite and its application in pickle salt. Background technique [0002] The history of my country's folk pickled pickles is very long, and many places have the traditional consumption habit of producing and eating by themselves. Domestic pickled kimchi adopts natural fermentation, that is, after the vegetables are washed and dried, they are fermented and pickled with edible salt water with a NaCl concentration of about 8% (w / v). During this period, the lactic acid bacteria attached to the vegetable ferment to produce lactic acid, and a large number of other microorganisms including some harmful bacteria participate in it. However, as the acid production of lactic acid bacteria increases, the pH value of the kimchi brine decreases, and the growth of miscellaneous bacteria will be inhibited. However, if only the lactic aci...

AI Technical Summary

Problems solved by technology

However, lactic acid bacteria with strong acid-producing ability and high-efficiency degradation of nitrite are prepared by spray-drying into a viable bacterial agent, and added to edible salt to prepare pickle salt. This technology and product have not been reported yet.

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