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图图库迪海岸的塑料倾倒土壤中的土著LDPE降解细菌:隔离,表征和降解效率

Rajendran Jagatheeswari Abisha¹, Velu Rani², Durairaj Manimekalai¹

¹Department of Aquatic Environment Management , Fisheries College and Research Institute Tamil Nadu Dr.J.Jayalalithaa Fisheries University , Thoothukudi, 628 008, India.

Archives of microbiology

|January 12, 2026

概括

研究人员分离了两种土壤细菌,Paenibacillus timonensis和Cupriavidus nantongensis,它们能够生物降解低密度聚乙烯 (LDPE). 这些细菌表现出显著的LDPE重量减轻和生物膜形成,为塑料废物管理提供了潜力.

科学领域:

环境微生物学环境微生物学
生物技术是生物技术.
聚合物科学聚合物科学

背景情况:

塑料污染,特别是低密度聚乙烯 (LDPE) 造成的塑料污染,对环境构成了重大挑战.
微生物生物降解为塑料废物管理提供了一个有希望的可持续解决方案.
识别具有LDPE降解能力的新型微生物对于开发有效的生物修复策略至关重要.

研究的目的:

隔离和识别能够生物降解未经处理的LDPE的土壤细菌.
为了描述选定的细菌分离物的生物降解潜力.
用微生物溶液提供塑料垃圾管理的基线数据.

主要方法:

从市政倾倒站收集了土壤样本,用于细菌隔离.
进行了缩培养在三维大豆 (TSA) 上,并对清除区域进行查.
16S rRNA测序确定了细菌分离物;生物降解通过体重减轻,pH值变化,细胞计数,FTIR和FE-SEM分析来评估.

主要成果:

隔离了29种不同的细菌;两个显示最大清除区域和生物膜形成.
确定了Paenibacillus timonensis和Cupriavidus nantongensis是主要的降解物.
分离物分别减少了3.15%和1.83%的LDPE重量,通过FTIR和FE-SEM证实了表面降解.

结论:

帕尼巴西勒斯蒂蒙尼斯和库普里亚维杜斯南通尼斯对LDPE生物降解具有显著的潜力.
细菌的附着和生物膜的形成是降解过程中的关键因素.
这些发现为开发塑料废物管理中的微生物战略提供了有价值的数据.

关键词:

生物降解生物降解在LDPE中使用LDPE.塑料垃圾填埋站塑料垃圾填埋站土壤细菌是土壤中的细菌.印度的东南海岸.

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