Arthrobacter citreus, aflatoxin b1-degrading preparation and method for degrading aflatoxin b1

The degradation of AFB1 by Bacillus limonensis soilh02 and its fermentation broth was optimized, which overcame the limitations of the existing aflatoxin B1 adsorption method and achieved efficient and safe AFB1 degradation with a degradation rate of up to 93.96%.

CN120966692BActive Publication Date: 2026-06-19QINGDAO UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO UNIV
Filing Date
2025-08-21
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing adsorption methods for aflatoxin B1 have problems such as the risk of toxin re-release, loss of nutrients, limited adsorption capacity, and the adsorbent becoming toxic waste. There is an urgent need to develop efficient, specific, low-cost, and environmentally friendly degradation methods.

Method used

The efficient degradation of AFB1 was achieved by using the Arthrobacter citreus soilh02 strain and its fermentation broth or fermentation supernatant, through optimization of fermentation conditions and addition of Cu2+.

Benefits of technology

The fermentation broth of Arthrobacter citrinum exhibits excellent degradation effect on AFB1, with a degradation rate of up to 93.96%. The method is mild, green, safe, pollution-free, and low-cost, making it suitable for the degradation of AFB1.

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Abstract

This invention discloses a strain of *Arthrobacter citreus*, an agent for degrading AFB1, and a method for degrading AFB1, belonging to the field of microbial technology. The *Arthrobacter citreus* strain of this invention is *Arthrobacter citreus* soilh02, which was deposited on June 6, 2025, at the China General Microbiological Culture Collection Center (CGMCC) with accession number CGMCC No. 34782. The *Arthrobacter citreus* strain of this invention exhibits good degradation effects on AFB1, with the active component for AFB1 degradation located in the fermentation supernatant of strain soilh02. Moreover, the degradation effect of the fermentation broth of strain soilh02 on AFB1 can be further improved under the condition of adding metal ions. Therefore, strain soilh02 has important application prospects in the degradation of AFB1.
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