A POLYPROPYLENE-DEGRADING PSYCHROBACILLUS STRAIN ISOLATED FROM A LANDFILL

文献类型： 外文期刊

第一作者： Li, Yunhan

作者： Li, Yunhan;Zhao, Jindi;Zhang, Zhidong;Zhang, Lihui;Wang, Panlin;Zhang, Zhidong;Zhang, Zhidong

作者机构：

关键词： polypropylene; Psychrobacillus sp.; biodegradation; genomic analysis

期刊名称：JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT （ 影响因子：1.3； 五年影响因子：2.2 ）

ISSN： 1648-6897

年卷期： 2024 年 32 卷 2 期

页码：

收录情况： SCI

摘要： Polypropylene (PP) is one of the most widely used plastics around the world. However, PP is recalcitrant to degradation under natural conditions, and its accumulation is increasingly threatening the environment. The stain LICME-ZWZR-10 was isolated from a landfill using PP as its sole carbon source. It was found to share 99.50% genetic similarity with Psychrobacillus sp. AK 1817. Upon incubation with Psychrobacillus sp. LICME-ZWZR-10, PP particles developed a rough surface with depressions and cracks, which were discerned through scanning electron microscopy (SEM). At a moderate temperature of 20 degrees C, this strain successfully degraded PP particles with an average diameter of 850 mu m, leading to a 9 +/- 0.40% reduction in particle weight over a span of 30 days. Fourier transform infrared spectroscopy (FTIR) released the emergence of carbonyl and ether-based functional groups on PP. Furthermore, genomic analysis unveiled the presence of a laccaseencoding gene in Psychrobacillus sp. LICME-ZWZR-10, suggesting its potential involvement in the biodegradation of PP.

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