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Intestinal Microecological Mechanisms of Aflatoxin B1 Degradation by Black Soldier Fly Larvae (Hermetia illucens): A Review
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This review examines how the gut microbiome of black soldier fly larvae degrades aflatoxin B1, a potent carcinogen in agricultural products, by functioning as a microbial reactor that can decompose emerging pollutants including mycotoxins, microplastics, and antibiotics.
Aflatoxin B1 (AFB1) is a naturally occurring contaminant pervasively found in agricultural produce, exhibiting extremely high carcinogenicity, teratogenicity and immunotoxicity, thereby constituting a substantial menace to worldwide food security and public health. Consequently, developing green and efficient degradation strategies for AFB1 is highly important. The intestinal tract of black soldier fly (Hermetia illucens) larvae (BSFL) contains complex, functionally diverse microbial communities that function as microbial reactors to degrade emerging environmental pollutants such as pesticides, microplastics, mycotoxins, and antibiotics. This functional characteristic offers a novel approach for mitigating AFB1 contamination. In this review, we systematically summarize the currently reported AFB1 degradation methods, focusing on the biological mode of action of the intestinal microbiota of BSFL. We elaborate on the efficacy of BSFL in AFB1 detoxification in terms of the host-microorganism co-degradation mechanism and discuss the core intestinal microbiota of BSFL and the main microbial degradation pathways involved in AFB1 metabolism during degradation. Given the low cost, high efficiency, safety, and sustainability of using the BSFL as living microbial reactors in which the core gut microbiota and the larval host detoxifying enzyme system synergistically degrade AFB1, this study provides a scientific reference for managing AFB1 pollution to overcome food security issues.
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