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Radical innovation breakthroughs of biodegradation of plastics by insects:history,present and future perspectives

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摘要 Insects damaging and penetrating plastic packaged materials has been reported since the 1950s.Radical innovation breakthroughs of plastic biodegradation have been initiated since the discovery of biodegradation of plastics by Tenebrio molitor larvae in 2015 followed by Galleria mellonella in 2017.Here we review updated studies on the insect-mediated biodegradation of plastics.Plastic biodegradation by insect larvae,mainly by some species of darkling beetles(Tenebrionidae)and pyralid moths(Pyralidae)is currently a highly active and potentially transformative area of research.Over the past eight years,publications have increased explosively,including discoveries of the ability of different insect species to biodegrade plastics,biodegradation performance,and the contribution of host and microbiomes,impacts of polymer types and their physic-chemical properties,and responsible enzymes secreted by the host and gut microbes.To date,almost all major plastics including polyethylene(PE),polypropylene(PP),polyvinyl chloride(PVC),polyethylene terephthalate(PET),polyurethane(PUR),and polystyrene(PS)can be biodegraded by T.molitor and ten other insect species representing the Tenebrionidae and Pyralidae families.The biodegradation processes are symbiotic reactions or performed by synergistic efforts of both host and gut-microbes to rapidly depolymerize and biodegrade plastics with hourly half-lives.The digestive ezymens and bioreagents screted by the insects play an essential role in plasatic biodegradation in certain species of Tenebrionidae and Pyralidae families.New research on the insect itself,gut microbiomes,transcriptomes,proteomes and metabolomes has evaluated the mechanisms of plastic biodegradation in insects.We conclude this review by discussing future research perspectives on insect-mediated biodegradation of plastics.
出处 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2024年第6期127-165,共39页 环境科学与工程前沿(英文)
基金 the National Natural Science Foundation of China(Grant No.52170131) the Woods Institute for Environment at Stanford University(USA)(Award 1197667-10-WTAZB)for supports.
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