Degradation of poly(butylene adipate-co-terephthalate) films by Thermobifida fusca FXJ-1 isolated from compost
文献类型: 外文期刊
第一作者: Jia, Xianbo
作者: Jia, Xianbo;Lin, Chenqiang;Zhang, Hui;Chen, Longjun;Chen, Jichen;Fang, Yu;Zhao, Ke;Zhao, Jie
作者机构:
关键词: Thermobifida fusca; PBAT; Degradation
期刊名称:JOURNAL OF HAZARDOUS MATERIALS ( 影响因子:14.224; 五年影响因子:12.984 )
ISSN: 0304-3894
年卷期: 2023 年 441 卷
页码:
收录情况: SCI
摘要: In recent years, Poly(butylene adipate-co-terephthalate) (PBAT) films were wildly used due to its biodegradable properties. However, there are few reports of strains that can high efficiently degrade PBAT. Thermobifida fusca FXJ-1, a thermophilic actinomycete, was screened and identified from compost. FXJ-1 can efficiently degrade PBAT at 55 ?C in MSM medium. The degradation rates of the pure PBAT film (PF), PBAT film used for mulching on agricultural fields (PAF), and PBAT-PLA-ST film (PPSF) were 82.87 +/- 1.01%, 87.83 +/- 2.00% and 52.53 +/- 0.54%, respectively, after nine days of incubation in MSM medium. Cracking areas were monitored uniformly distributed on the surfaces of three kinds of PBAT-based films after treatment with FXJ-1 using scanning electron microscopy. The LC-MS results showed that PBAT might be degraded into adipic acid, terephthalic acid, butylene adipate, butylene terephthalate and butylene adipate-co-terephthalate, and these products are involved in the cleavage of ester bonds. We also found that amylase produced by FXJ-1 played an important role in the degradation of PPSF. FXJ-1 also showed an efficient PBAT-based films degradation ability in simulating compost environment, which implied its potential application in PBAT and starch-based film degradation by industrial composting.
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