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Isolation, characteristics, and poly(butylene adipate-co-terephthalate) (PBAT) degradation mechanism of a marine bacteria Roseibium aggregatum ZY-1

Marine Pollution Bulletin 2024 21 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Jiajia Shan Jiajia Shan Xianliang Yi, Xianliang Yi, Jiajia Shan Jiajia Shan Xianliang Yi, Jiajia Shan Jiajia Shan Zheng Yuan, Xianliang Yi, Jiajia Shan Haixia Pan, Hao Zhou, Xianliang Yi, Xianliang Yi, Tianyi Yu, Xianliang Yi, Jiajia Shan Xianliang Yi, Hao Zhou, Hao Zhou, Hao Zhou, Xianliang Yi, Hao Zhou, Jingjing Zhan, Jiajia Shan Hao Zhou, Jiajia Shan Zheng Yuan, Tianyi Yu, Zheng Yuan, Huiqing Ma, Jingjing Zhan, Hao Zhou, Hao Zhou, Jingjing Zhan, Hao Zhou, Xianliang Yi, Huiqing Ma, Yang Liu, Yang Liu, Xianliang Yi, Jiajia Shan Jiajia Shan Jiajia Shan Xianliang Yi, Hao Zhou, Jiajia Shan Jingjing Zhan, Hao Zhou, Jingjing Zhan, Xianliang Yi, Xianliang Yi, Jiajia Shan Hao Zhou, Jiajia Shan Hao Zhou, Jingjing Zhan, Tianyi Yu, Xianliang Yi, Xianliang Yi, Xianliang Yi, Jingjing Zhan, Jingjing Zhan, Xianliang Yi, Jingjing Zhan, Xianliang Yi, Xianliang Yi, Tianyi Yu, Xianliang Yi, Yang Liu, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Xianliang Yi, Hao Zhou, Jiajia Shan Jingjing Zhan, Xianliang Yi, Haixia Pan, Jiajia Shan Xianliang Yi, Xianliang Yi, Jiajia Shan Xianliang Yi, Wenyuan Wang, Hao Zhou, Jiajia Shan

Summary

Scientists isolated a marine bacterium called Roseibium aggregatum ZY-1 that can break down PBAT, a type of biodegradable plastic. The research revealed the specific enzymes and metabolic pathways the bacterium uses to degrade PBAT into its basic building blocks, suggesting it could be a promising candidate for tackling plastic pollution in ocean environments.

Polymers

PLA

Study Type Environmental

Marine microorganisms have been reported to degrade microplastics. However, the degradation mechanisms are still poorly understood. In this study, a bacterium Roseibium aggregatum ZY-1 was isolated from seawater, which can degrade poly(butylene adipate-co-terephthalate) (PBAT). The PBAT-PLA(polylactic acid, PLA) films, before and after degradation, were characterized by scanning electron microscope (SEM) and Fourier transform infrared spectrometer (FTIR), the weight loss rate and water contact angle were measured. The results indicate that ZY-1 colonized on PBAT-PLA film, changed the functional groups and decreased water contact angle of PBAT-PLA film. Moreover, liquid chromatography mass spectrometry (LC-MS) analysis reveales that PBAT was degraded into its oligomers (TB, BTB) and monomers (T, A) during 10 days, and adipic acid (A) could be used as a sole carbon source. The whole genome sequencing analyses illustrate the mechanisms and enzymes such as PETase, carboxylesterases, arylesterase (PpEst) and genes like pobA, pcaBCDFGHIJKT, dcaAEIJK, paaGHJ involved in PBAT degradation. Therefore, the R. aggregatum ZY-1 will be a promising candidate of PBAT degradation.

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