Influence of Polymer Size on Polystyrene Biodegradation in Mealworms(Tenebrio molitor):Responses of Depolymerization Pattern,Gut Microbiome,and Metabolome to Polymers with Low to Ultrahigh Molecular Weight

Bo-Yu Peng; Ying Sun; Shaoze Xiao

首页> 外文期刊>Environmental Science & Technology: ES&T >Influence of Polymer Size on Polystyrene Biodegradation in Mealworms(Tenebrio molitor):Responses of Depolymerization Pattern,Gut Microbiome,and Metabolome to Polymers with Low to Ultrahigh Molecular Weight

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Influence of Polymer Size on Polystyrene Biodegradation in Mealworms(Tenebrio molitor):Responses of Depolymerization Pattern,Gut Microbiome,and Metabolome to Polymers with Low to Ultrahigh Molecular Weight

机译：Influence of Polymer Size on Polystyrene Biodegradation in Mealworms(Tenebrio molitor):Responses of Depolymerization Pattern,Gut Microbiome,and Metabolome to Polymers with Low to Ultrahigh Molecular Weight

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Biodegradation of polystyrene(PS)in mealworms(Tenebrio molitor lavae)has been identified with commercial PS foams.However,there is currently limited understanding of the influence of molecular weight(MW)on insect-mediated plastic biodegradation and the corresponding responses of mealworms.In this study,we provided the results of PS biodegradation,gut microbiome,and metabolome by feeding mealworms with high-purity PS microplastics with a wide variety of MW.Over 24 days,mealworms(50 individuals)fed with 0.20 g of PS showed decreasing removal of 74.1 ± 1.7,64.1 ± 1.6,64.4 ± 4.0,73.5 ± 0.9,60.6 ± 2.6,and 39.7 ± 4.3% for PS polymers with respective weight-average molecular weig hts(Mj of 6.70,29.17,88.63,192.9,612.2,and 1346 kDa.The mealworms degraded most PS polymers via broad depolymerization but ultrahigh-MW PS via limited-extent depolymerization.The gut microbiome was strongly associated with biodegradation,but that with low-and medium-MW PS was significandy distinct from that with ultrahigh-MW PS.Metabolomic analysis indicated that PS biodegradation reprogrammed the metabolome and caused intestinal dysbiosis depending on MW.Our findings demonstrate that mealworms alter their gut microbiome and intestinal metabolic pathways in response to in vivo biodegradation of PS polymers of various MWs.

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《Environmental Science & Technology: ES&T》 |2022年第23期|17310-17320|共11页
作者
Bo-Yu Peng; Ying Sun; Shaoze Xiao;
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作者单位

State Key Laboratory of Pollution Control and Resource Reuse,College of Environmental Science and Engineering Tongji University,Shanghai 200092,China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
polystyrene; molecular weight; biodegradation; mealworms; gut microbiome; metabolome;

Influence of Polymer Size on Polystyrene Biodegradation in Mealworms(Tenebrio molitor):Responses of Depolymerization Pattern,Gut Microbiome,and Metabolome to Polymers with Low to Ultrahigh Molecular Weight

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