了解不同环境中的微塑料污染:评估归宿、影响和补救方法

IF 4.1 2区 环境科学与生态学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Priyanka Yadav , Vishal Mishra
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引用次数: 0

摘要

微塑料(MPs)对环境构成了普遍威胁,有可能损害生态系统和公众健康。迄今为止,大多数研究主要集中在淡水和海洋生态系统。本综述试图提供有关微塑料污染、其来源及其在土壤、水和大气等所有环境区划中的归宿的最新知识。此外,还简要概述了不同微塑料的接触途径及其对公众健康的负面影响。人们使用了各种传统方法来清除 MPs,但这些方法由于存在一些缺点而效率低下。微生物方法因其独特的新陈代谢机制而被认为是去除 MPs 的更安全选择。目前已发现 400 多种能够降解 MPs 的微生物。真菌是微生物中最擅长降解塑料的,因为它们能释放独特的酶,并能以较少的资源在有害成分上生长。最近的研究发现了许多能分解各种塑料的真菌种类;然而,关于生物降解的基本机制仍有许多未解之谜。通过各种酶降解 MP 的分子机制很少受到关注。此外,尽管白腐真菌具有独特的胞外酶系统,但在所研究的生物降解真菌中,白腐真菌受到的关注最少。因此,本研究总结了真菌降解各种聚合物的能力以及多种酶在降解 MPs 过程中的作用。此外,还讨论了不同的细胞外酶和细胞内酶在生物降解 MPs 中的作用。未来展望包括跟踪微塑料污染的长期趋势、评估清理技术的有效性,以及将开发的技术与社会经济因素纳入政策框架。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comprehending microplastic pollution in diverse environment: Assessing fate, impacts, and remediation approaches
Microplastics (MPs) pose pervasive environmental threats that potentially harm ecosystems and public health. Till date, most of the researches have predominantly concentrated on freshwater and marine ecosystems. This review attempts to provide current knowledge of microplastic pollution, its source, and its fate in all environmental compartments for instance soil, water, and atmosphere. Also briefly summarizes different MP's exposure routes and their negative consequences on public health. Various conventional methods have been used to remove MPs but these are inefficient owing to several demerits. Microbial approach is regarded as a safer option for removing MPs due to its unique metabolic mechanism. More than 400 microorganisms have been discovered as capable of MPs degradation. Fungi have appeared as the most proficient degraders of plastics among the microbes because they release unique enzymes and can thrive on hazardous components with low resources. Numerous fungal species that can break down various plastic kinds have been found in recent studies; nevertheless, there are still many unanswered questions regarding the mechanisms underlying biodegradation. The molecular mechanisms behind MP degradation via various enzymes have received little attention. Also, white-rot fungi have received the least attention among the fungi examined for biodegradation despite having a unique extracellular enzymatic system. Thus, the current study summarizes the ability of fungi that degrade various polymers and the function of multiple enzymes in the degradation of MPs. Also, the role of different extracellular and intracellular enzymes in biological degradation of MPs is discussed. Prospects for the future include tracking long-term trends in microplastic contamination, evaluating the effectiveness of clean-up techniques, and integrating the developed technologies with socioeconomic factors into policy frameworks.
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来源期刊
CiteScore
9.60
自引率
10.40%
发文量
107
审稿时长
21 days
期刊介绍: International Biodeterioration and Biodegradation publishes original research papers and reviews on the biological causes of deterioration or degradation.
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