期刊论文

Li, Y

英文

Journal of Hazardous Materials

0304-3894

2024

465

133173

10.1016/j.jhazmat.2023.133173

National Natural Science Foundation of China [U21A20187, 21825403, 21976194]; Science and Technology Innovation Program of Hunan Province [2022RC1118]; Forestry Science and Technology Innovation Outstanding Youth Research Project of Hunan Province [XLKJ202303]; Hunan Provincial Natural Science Foundation of China [2023JJ30986, 2023JJ41043]; Training Program for Excellent Young Innovators of Changsha [kq1905065]; Youth Scientific Research Foundation of Central South University of Forestry and Technology; Hunan Graduate Research Innovation Project [QJ2017001 A]; [CX20220714]

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Enzymatic degradation of plastic is an effective means of plastic recycling and pollution control. However, the strong chemical inertness of polypropylene plastic (PP) severely impedes its oxidative cleavage, making it resistant to degradation. In this study, based on sequence screening of Hidden Markov Model (HMM), a dioxygenase (HIS1) was identified and characterized to be effective in PP oxidation. Various kinds of PP products, including plastic films, microplastics, and disposable water cups or bags, were HIS1-degraded with cracks and holes on the surface. The hydrophobic binding was the p...