Bioconversion of black soldier fly larvae on agricultural by-products: Study on growth, nutrition, physicochemical properties, metabolic profiling, and larvae-substrate component correlations
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引用次数: 0
Abstract
The efficient utilization of global agricultural by-products represents a critical challenge for sustainable development. Conventional methods face efficiency and environmental limitations, whereas black soldier fly larvae (BSFL) bioconversion technology offers superior conversion with lower emissions. However, current research emphasizes waste reduction but lacks evaluation of critical industrial parameters like larval physicochemical properties, bioactive compounds, and substrate-larvae compositional relationships, impeding precision nutrition. This research systematically evaluates the effects of various agricultural by-products on BSFL growth, nutrition, physicochemical properties, and metabolic profiles. For the first time, integrating metabolites to establish larvae-substrate correlations. Key findings demonstrate substrate-specific outcomes: Soybean meal maximized growth and bioconversion efficiency; cottonseed meal enhanced crude protein; distillers’ grains increased lipid accumulation; rapeseed and peanut meal improved antioxidant capacity. The fatty acid composition and physicochemical properties of BSFL oil were markedly substrate-dependent, with C12:0 exhibiting retention value exceeding 1,500, highlighting the efficient synthesis capacity of BSFL. Metabolic profiling revealed significant pathway alterations in BSFL, particularly in unsaturated fatty acid biosynthesis and ABC transporter enrichment. Correlation analysis identified nutritional indicators (including crude protein, crude fat), key fatty acids (including C18:1n9, C20:5n3, C22:6n3), and 1,137 metabolites that were strongly associated with substrate composition. Preliminary identification of substrate components potentially affecting these BSFL constituents has been achieved. This study provides a comprehensive evaluation framework for BSFL-based bioconversion, providing scientific evidence for precisely tailoring larval composition through substrate optimization, contributing to resource recovery from agricultural by-products and the development of a circular economy.
期刊介绍:
The Journal of Cleaner Production is an international, transdisciplinary journal that addresses and discusses theoretical and practical Cleaner Production, Environmental, and Sustainability issues. It aims to help societies become more sustainable by focusing on the concept of 'Cleaner Production', which aims at preventing waste production and increasing efficiencies in energy, water, resources, and human capital use. The journal serves as a platform for corporations, governments, education institutions, regions, and societies to engage in discussions and research related to Cleaner Production, environmental, and sustainability practices.