微生物降解聚己二酸丁二烯对苯二甲酸酯塑料的研究进展

Advances inmicrobial degradation of poly(butylene adipate terephthalate)plastic

随着全球塑料污染问题加剧,聚己二酸丁二烯对苯二甲酸酯(PBAT)作为可生物降解塑料的代表,其被微生物降解的速率与机制受到越来越多的关注.本文对比了PBAT在水体、土壤和堆肥环境中的降解规律,解析了不同因素对微生物降解PBAT的影响,总结了目前已筛选到的PBAT降解菌并对比其降解速度,阐述了微生物在胞外和胞内两个层面的PBAT降解机制和降解产物.最后从影响因子研究、PBAT降解指标统一、微生物群落构建和PBAT降解机制探究技术等方面提出未来研究方向.

With the intensification of the global plastic pollution,the rate and mechanism of microbial degradation of Poly(butylene adipate terephthalate)(PBAT),a representative of biodegradable plastics,have received increasing attention.Here we compare the degradation patterns of PBAT in water,soil,and compost environments,analyze the effects of different factors on the microbial degradation PBAT,summarizes the PBAT-degrading bacteria that have been screened so far and compares their degradation speeds,and elucidate the PBAT modification mechanism and modification products at both extracellular and intracellular levels.Finally,we proposed future research directions from the aspects of research on influencing factors,unification of PBAT degradation indicators,construction of microbial community,and exploration technology of PBAT degradation mechanism.