多种等级的聚乙烯微塑料由Tenebrio molitor和Tenebrio obscurus幼虫的生物降解:对它们的生理学的影响

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Meng-Qi Ding¹, Jie Ding¹, Zhi-Rong Zhang²

¹State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China.

Journal of environmental management

|April 10, 2024

概括

Tenebrio molitor和Tenebrio obscurus幼虫生物降解聚乙烯 (PE) 塑料,尽管有一些不良生理影响,但显示出适应性. 它们的肠道微生物组发生变化,降解产品显示低生态毒性,为昆虫介导的塑料生物降解提供了洞察力.

科学领域:

环境科学环境科学
微生物学微生物学
聚合物科学聚合物科学

背景情况:

聚乙烯 (PE) 是一种广泛生产的塑料,有HDPE,LLDPE和LDPE等变化.
塑料污染是一个重大的环境问题,需要有效的降解策略.

研究的目的:

研究Tenebrio molitor和Tenebrio obscurus幼虫在不同类型的聚乙烯 (PE) 上的生物降解能力.
为了分析生理反应,肠道微生物组的变化,以及在养PE时幼虫的降解产品.

主要方法:

在受控条件下,幼虫在21天内食高纯度HDPE,LLDPE和LDPE粉末.
评估了幼虫生理学,生存率,体重变化,脂肪含量,肠道微生物组和氧化应激指标.
分析了PE降解率和产品,以及使用T.E.S.T.的生态毒性模拟.

主要成果:

无论是T. molitor还是T. obscurus都消耗了大量的PE,消化了近40%的摄入塑料.
与对照人群相比,幼虫的脂肪含量降低,氧化应激增加和肠道损伤增加.
肠道微生物组的组成和多样性适应PE暴露,与生物降解和分子量变化相关.
在PE降解产品中,对大夫尼亚大和Rattus norvegicus的生态毒性较低.

结论:

虫幼虫可以生物降解各种PE类型,证明了肠道微生物群的适应性.
虽然这些昆虫的PE生物降解是可行的,但对幼虫的生理影响需要考虑.
昆虫介导的PE生物降解为塑料废物管理提供了一种潜在的环保方法.

关键词:

生态毒性生态毒性食虫是一种食虫.代谢过程中的代谢.微生物组是一个微生物组.生理学反应的反应.聚乙烯的物理化学性能聚乙烯的物理化学性能

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