Microbial Degradation and Valorization of Plastic Wastes

被引:313
作者
Ru, Jiakang [1 ]
Huo, Yixin [1 ,2 ]
Yang, Yu [1 ]
机构
[1] Beijing Inst Technol, Sch Life Sci, Dept Biol, Beijing, Peoples R China
[2] Beijing Inst Technol, Key Lab Mol Med & Biotherapy, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
plastic wastes; biodegradation; valorization; depolymerase; protein engineering; synthetic biology; POLYURETHANE-DEGRADING ENZYME; HIGH-DENSITY POLYETHYLENE; POLYESTER-POLYURETHANE; POLYVINYL-CHLORIDE; TEREPHTHALATE DEGRADATION; PSEUDOMONAS-CHLORORAPHIS; BACILLUS-SUBTILIS; MOLECULAR CHARACTERIZATION; PRETREATED POLYPROPYLENE; MEDIATED BIODEGRADATION;
D O I
10.3389/fmicb.2020.00442
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
A growing accumulation of plastic wastes has become a severe environmental and social issue. It is urgent to develop innovative approaches for the disposal of plastic wastes. In recent years, reports on biodegradation of synthetic plastics by microorganisms or enzymes have sprung up, and these offer a possibility to develop biological treatment technology for plastic wastes. In this review, we have comprehensively summarized the microorganisms and enzymes that are able to degrade a variety of generally used synthetic plastics, such as polyethylene (PE), polystyrene (PS), polypropylene (PP), polyvinyl chloride (PVC), polyurethane (PUR), and polyethylene terephthalate (PET). In addition, we have highlighted the microbial metabolic pathways for plastic depolymerization products and the current attempts toward utilization of such products as feedstocks for microbial production of chemicals with high value. Taken together, these findings will contribute to building a conception of bio-upcycling plastic wastes by connecting the biodegradation of plastic wastes to the biosynthesis of valuable chemicals in microorganisms. Last, but not least, we have discussed the challenges toward microbial degradation and valorization of plastic wastes.
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页数:20
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