Fermentation method for producing nitrite reductase

A technology of nitrite and reductase, which is applied in the direction of microorganism-based methods, methods using microorganisms, oxidoreductase, etc., can solve problems such as excessive nitrite, and achieve the effect of increasing production, broad prospects and safety advantages
CN109679930AInactive Publication Date: 2019-04-26DALIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV
Publication Date
2019-04-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of microbiology, enzyme engineering, fermentation engineering and biochemistry, in particular to a bacterial strain for producing nitrite reductase and a fermentation method thereof. After the bacterial strain of lactobacillus plantarum (the preservation number is CGMCC NO.1.12935) is domesticated and purified; the nitrite reductase is produced throughfermentation. After the bacterial strain is domesticated and purified, the yield of the nitrite reductase produced by bacteria through stable fermentation is improved; nitrite in food and feed can beeliminated. From the food safety angle, the lactobacillus nitrite reductase is developed for reducing and eliminating the residue of nitrite in food; wide prospects and safety advantages are realized.
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Description

technical field

[0001] The invention relates to the technical fields of microbiology, enzyme engineering, fermentation engineering and biochemistry, and relates to a bacterial strain for producing nitrite reductase and a fermentation method thereof. The nitrite reductase produced by the invention is mainly used in food industry, brewing, Fermentation, pharmaceutical and other industries. Background technique

[0002] Nitrite is one of the main chemical pathogenic factors of food poisoning in my country in recent years. After nitrite is absorbed into the blood, it can make Fe in normal hemoglobin 2+ Oxidized to Fe 3+ , causing hemoglobin to lose its oxygen-carrying function, causing tissue hypoxia, and even hypoxia asphyxia. Nitrite is also a precursor of strong carcinogen nitrosamines, which is a potential carcinogenic hazard. It is closely related to the occurrence of gastric cancer, liver cancer and esophageal cancer. According to the epidemiological survey, the nitri...

Claims

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