Deep-sea Bacillus aryabhattai capable of inhibiting aflatoxin

Abstract

The invention provides a deep-sea bacterium capable of inhibiting synthesis of aflatoxin, in particular to Bacillus aryabhattai ZL4, isolated from light yellow calcareous ooze sediment 2796 meters deep in South Atlantic and preserved in China General Microbiological Culture Collection Center under CGMCC No. 10661. The Bacillus aryabhattai ZL4 is fermented in a screened culture medium, acquired fermented supernate is fully capable of inhibiting synthesis of aflatoxin, no toxic intermediates are generated, and the Bacillus aryabhattai ZL4 is able to inhibit the aflatoxin from the toxin synthetic means but has no inhibitory action on intestinal flora and unicellular eumycetes, saccharomyces cerevisiae. The Bacillus aryabhattai ZL4 and its fermentation products are applicable to effective control of aflatoxin contamination of fodders, grains, field crops and the like.

Description

technical field [0001] The invention relates to the technical field of deep-sea microbial technology and mycotoxin biological control, in particular to a strain of deep-sea Bacillus arborii that inhibits aflatoxin. Background technique [0002] In recent years, microbial resources in extreme environments such as oceans and deep seas and their development and utilization have become the focus of world attention and competition. Due to the extreme diversity of living environments, deep-sea microorganisms have strong self-defense capabilities and environmental adaptability, and have extremely important theoretical and It has wide application prospects in agriculture, medicine, food, industry, environmental protection, national defense and other fields. [0003] There have been a small number of units at home and abroad that have carried out research on deep-sea microorganisms in the field of biological control, but they mainly focus on the biological control of non-toxigenic fu...

AI Technical Summary

Problems solved by technology

[0003] There have been a small number of units at home and abroad that have carried out research on deep-sea microorganisms in the field of biological control, but they mainly focus on the biological control of non-toxigenic fungi, and very little research has been carried out on biological control of toxin-producing fungi, except for this patent application Except for the unit and the applicant, there is no research report on the prevention and control of toxin-producing fungi by deep-sea microorganisms from other units and authors at home and abroad. The harm of toxin-producing fungi is more serious than that of non-toxin-producing fungi, which not only affects the growth of crops, but also reduces the yield. , more importantly, produce mycotoxins that can seriously endanger human and animal health, such as aflatoxins, which are highly toxic, carcinogenic, teratogenic, and immunosuppressive. Therefore, the prevention and control of toxin-producing fungi is an urgent task. Major Issues to be Solved

[0004] The preferred method to effectively prevent and control the contamination of feed and grain by aflatoxin and other toxin-producing fungi is toxin suppression, that is, to inhibit the growth of aflatoxin and other toxin-producing fungi in feed and grain and toxin production, rather than detoxification, that is, to remove the already The aflatoxins produced are difficult to eradicate because of the high cost and unsatisfactory effect of detoxification, and some physical and chemical conditions for removing toxins will lead to the loss of feed and grain nutrition