AI Article Synopsis
- Vermicomposting using black soldier fly larvae is an effective biotechnological method for managing food waste, though the understanding of the larvae's gut microbiome is limited.
- The study found significant changes in the microbial community following larvae inoculation, with 66.0% of gut bacteria contributing to the biodegradation process and 11 out of 21 metabolic functions in vermicompost showing higher activity than in natural composting.
- Certain bacteria from the larvae's gut, such as Corynebacterium, exhibited strong metabolic capabilities, facilitating the transformation of food waste and highlighting the potential of the BSF gut microbiome in optimizing waste conversion into bioproducts.
Article Abstract
Vermicomposting using black soldier fly (BSF) larvae (Hermetia illucens) has gradually become a promising biotechnology for waste management, but knowledge about the larvae gut microbiome is sparse. In this study, 16S rRNA sequencing, SourceTracker, and network analysis were leveraged to decipher the influence of larvae gut microbiome on food waste (FW) biodegradation. The microbial community structure of BSF vermicompost (BC) changed greatly after larvae inoculation, with a peak colonization traceable to gut bacteria of 66.0%. The relative abundance of 11 out of 21 metabolic function groups in BC were significantly higher than that in natural composting (NC), such as carbohydrate-active enzymes. In addition, 36.5% of the functional genes in BC were significantly higher than those in NC. The changes of metabolic functions and functional genes were significantly correlated with the microbial succession. Moreover, the bacteria that proliferated in vermicompost, including Corynebacterium, Vagococcus, and Providencia, had strong metabolic abilities. Systematic and complex interactions between the BSF gut and BC bacteria occurred over time through invasion, altered the microbial community structure, and thus evolved into a new intermediate niche favourable for FW biodegradation. The study highlights BSF gut microbiome as an engine for FW bioconversion, which is conducive to bioproducts regeneration from wastes.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6465238 | PMC |
| http://dx.doi.org/10.1111/1751-7915.13393 | DOI Listing |
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