ArticleFrontiers in microbiology2026
Impact of agro-industrial by-products on nutritional value and microbiota composition of black soldier fly larvae.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
In this study, interrelations between agro-industrial by-products, black soldier fly larvae (BSFL) rearing, and associated microbiota were investigated. Carrot pomace, brewer's yeast, spent grains, and rape press cake were used as feed substrates, varying in their chemical composition, nutritional value, and microbial load and diversity. Overall, the data did not reveal a consistent or direct relationship between substrate chemical composition and nutrient profile of the BSFL, suggesting that larval development may be influenced more by complex substrate-microbe-larva interactions than by substrate chemistry alone. Using brewer's yeast, the highest average larval biomass (184.3 mg/larva) and crude protein content (61.1%), as well as high crude fat content (24.3%), were obtained. Fatty acid analyses of BSFL revealed diverse patterns with high saturated (stearic acid, palmitic acid, myristic acid, lauric acid) or unsaturated (oleic acid, linoleic acid) fatty acid contents in BSFL reared on carrot pomace and brewer's yeast, or on rape press cake, respectively. The composition of the substrate, either nutrient (dietary fibre) or microbiota-wise, markedly influenced the BSFL microbiota. Several species of lactic acid bacteria and
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