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A Comparative Study of Effects of Biodegradable and Non-biodegradable Microplastics on the Growth and Development of Black Soldier Fly Larvae (Hermetia illucens)

Waste and Biomass Valorization 2023 23 citations

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This comparative study examined the effects of biodegradable polyamide (PA) and polylactic acid (PLA) microplastics versus conventional microplastics on the growth and development of black soldier fly larvae, assessing whether biodegradable plastics pose lower risks to insect decomposers.

Polymers

Experimental design outlining the workflow for the analyses used to investigate the effect of two types of microplastics, polyamide (PA), and polylactic acid (PLA), on growth and development of black soldier fly larvae.

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A comparative study of effects of biodegradable and non-biodegradable microplastics on the growth and development of black soldier fly larvae (Hermetia illucens).

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Researchers investigated the digestion, accumulation, and excretion of biodegradable and non-biodegradable microplastics in black soldier fly larvae, finding that both types accumulated only in the larval gut and had no adverse effects on larval growth or development. Larvae efficiently excreted microplastics before pupation, suggesting BSFL could process plastic-contaminated organic waste without significant bioaccumulation.

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Experiments using Black Soldier Fly larvae to process food waste mixed with starch-based biodegradable plastic films showed that the larvae generate and accumulate small biodegradable microplastic particles (under 50 µm) during digestion. As biodegradable plastics become more common in food packaging, this finding highlights a gap in understanding their fate in biological waste treatment systems and whether "biodegradable" microplastics pose their own environmental risks.

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Toxicity and bioconversion: Meta-analytical insights into microplastic effects on black soldier fly rearing

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This meta-analysis found that microplastics in organic waste can reduce black soldier fly larval growth and survival, though larvae demonstrated some capacity to biodegrade certain plastic polymers. The findings are important because black soldier fly larvae are increasingly used for sustainable waste processing, and microplastic contamination in waste streams could compromise this approach.

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Degradation of bioplastics by black soldier fly (Hermetia illucens)

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Researchers investigated the ability of black soldier fly larvae (Hermetia illucens) to degrade bioplastics, exploring this insect species as a potential biological tool for accelerating the breakdown of biodegradable plastic materials in waste management systems.

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Microplastics affected black soldier fly (Hermetiaillucens) pupation and short chain fatty acids

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Researchers exposed black soldier fly (Hermetia illucens) larvae to polypropylene microplastics and found that MP exposure delayed pupation, altered larval development, and shifted gut short-chain fatty acid profiles, suggesting that microplastics disrupt both development and gut microbiome function in this widely used bioconversion insect.

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