数字农科院2.0

Bridging the knowledge gap: From poly(butylene adipate-co-terephthalatebutylene) degradation to CO2-generating mineralization under the synergistic effect of bacteria and fungi

文献类型： 外文期刊

作者： Yue Wang;Qi Liu;Chang Hong Xie;Ruo Tong Zhao;Qiu Xiang Tang;Dong Fei Han;Yi Ning Xia;Ji Xiao Cui;Chang Rong Yan;Wen Qing He

作者机构：

关键词： Degradation intermediates;Microbial synergistic degradation;Poly (butylene adipate-co-terephthalate);Soil bacteria;Soil fungi

期刊名称： Journal of Hazardous Materials

ISSN： 0304-3894

年卷期： 2025 年 494 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Poly(butylene adipate-co-terephthalate) (PBAT) is a promising polymer with excellent mechanical properties and biodegradability. However, knowledge gaps between its degradation and mineralization processes in soil hampers its environmental impact and application potential. In this study, we elucidated the degradation process of PBAT, starting with the degradation of high-molecular-weight polymers into 30 intermediates, before ultimately mineralized into CO2. Bacteria and fungi drove the degradation and mineralization of these intermediates. We discovered that PBAT was synergistically degraded by combinations of 27 bacterial and fungal biomarkers rather than by single biomarkers dominated by Bacteroidota, Acidobacteriota, and Ascomycota. These combinations of related functional genes perform various functions at every stage of PBAT degradation, including breaking down molecular structures, degrading intermediates, and mineralization. Bacterial biomarkers showed greater diversity than fungal biomarkers in degrading PBAT. Our findings provide useful insights into the degradation of PBAT in soil and a foundation for systematically evaluating and controlling the environmental behavior and safety of PBAT in soil.

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