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Targeted Detoxification of Aflatoxin B 1 in Edible Oil by an Enzyme-Metal Nanoreactor.
Journal of Agricultural and Food Chemistry 2024 March 7
Mycotoxin contamination is an important issue for food safety and the environment. Removing mycotoxins from food without losing nutrients and flavor components remains a challenge. In this study, a novel strategy was proposed for the targeted removal of aflatoxin B1 (AFB1 ) from peanut oil using an amphipathic enzyme-metal hybrid nanoreactor (PL-GOx-Fe3 O4 @COF) constructed with covalent organic frameworks (COFs) which can selectively adsorb AFB1 . Due to the confined space provided by COFs and the proximity effect between GOx and Fe3 O4 , the detoxification of AFB1 is limited in the nanoreactor without affecting the composition and properties of the oil. The detoxification efficiency of AFB1 in the chemoenzymatic cascade reaction catalyzed by PL-GOx-Fe3 O4 @COF is six times higher than that of the combination of free GOx and Fe3 O4 . The AFB1 transformation product has nontoxicity to kidney and liver cells. This study provides a powerful tool for the targeted removal of mycotoxins from edible oils.
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