Aflatoxin B 1 (AFB 1 ) contamination is an important issue for the safety of edible oils. Enzymatic degradation is a promising approach for removing mycotoxins in a specific, efficient, and green manner. However, enzymatic degradation of mycotoxins in edible oil is challenging as a result of the low activity and stability of the enzyme. Herein, a novel strategy was proposed to degrade AFB 1 in peanut oil using an amphipathic laccase−inorganic hybrid nanoflower (Lac NF−P) as a biocatalyst. Owing to the improved microenvironment of the enzymatic reaction and the enhanced stability of the enzyme structure, the proposed amphipathic Lac NF−P showed 134-and 3.2-fold increases in the degradation efficiency of AFB 1 in comparison to laccase and Lac NF, respectively. AFB 1 was removed to less than 0.96 μg/kg within 3 h when using Lac NF−P as a catalyst in the peanut oil, with the AFB 1 concentration ranging from 50 to 150 μg/kg. Moreover, the quality of the peanut oil had no obvious change, and no leakage of catalyst was observed after the treatment of Lac NF−P. In other words, our study may open an avenue for the development of a novel biocatalyst for the detoxification of mycotoxins in edible oils.
This publication is part of a Special Collection on "Heterogeneous Chemo-Enzymatic Catalysis". Please check the ChemCatChem homepage for more articles in the collection.
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