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划分由红树林衍生的微生物降解聚乙烯微塑料的降解:酶途径和中间识别

Muhammad Adnan Sabar¹, Chotikoon Bunditboondee¹, Yi-Pin Lin²

¹Department of Environmental and Sustainable Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand.

Ecotoxicology and environmental safety

|January 11, 2026

概括

两种红树林细菌,Lysobacter sp. 这种细菌. (MAS-1) 和酸降解剂kimnyeongensis (MAS-2),有效地降解聚乙烯微塑料 (PE-MPs). 这些微生物对海洋生态系统中塑料污染的生物修复有希望.

科学领域:

环境微生物学环境微生物学
生物修复是一种生物修复.
海洋生态海洋生态学

背景情况:

聚乙烯微塑料 (PE-MPs) 在海洋环境,特别是红树林中积累,造成生态损害.
生物修复为控制塑料污染提供了一个可持续的解决方案.
红树林生态系统拥有独特的微生物群落,具有潜在的塑料降解能力.

研究的目的:

研究PE-MP上从红树林生物膜中分离出来的细菌菌株的生物修复潜力.
描述PE-MP降解过程中微生物群落的变化.
阐明已识别的细菌菌株所采用的降解机制.

主要方法:

细菌菌株的分离和鉴定 (Lysobacter sp. 树PE薄膜中的MAS-1,Nitratireductor kimnyeongensisMAS-2) 是由树PE薄膜制成的.
使用SEM和FT-IR量化PE-MP减重和表面分析.
通过测序和代谢途径预测使用LC-MS/MS和BioTransformer 3.0.0进行微生物社区分析.

主要成果:

在30天内,MAS-1实现了35.4%,MAS-2实现了23.04%的PE-MP减肥.
SEM显示了表面的坑和裂,FT-IR显示了由于氧化而增加的水友性.
微生物群落转向蛋白质细菌和Actinomycetota;每个菌株都预测有不同的代谢途径.

结论:

红树林衍生的细菌,莱索巴克特 sp. MAS-1和Nitratireductor kimnyeongensis MAS-2,表明PE-MP具有重要的生物修复潜力.
这些菌株诱导PE-MPs的物理和化学变化,促进降解.
该研究强调了这些微生物在塑料分解中的独特代谢作用,为未来的生物修复策略提供了见解.

关键词:

生物降解生物降解在 silico 路径预测预测.红树林生态系统红树林生态系统微生物的殖民化聚乙烯微塑料 (PE-MP) 是一种微塑料.

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