Biodegradation of Poly(.EPSILON.-Caprolactone) Film in the Presence of Lysinibacillus sp. 70038 and Characterization of the Degraded Film
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概要
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Poly (ε-caprolactone) (PCL) is one of the commercial biodegradable plastics and biocompatible polyesters that can be assimilated by microorganisms. <I>Lysinlbacillus</I> sp.70038 which degrades PCL film was screened from stock cultures by cultivation using an enrichment culture medium containing PCL film with the weight-averaged molecular weight (Mw) of 160, 000 as a sole carbon source. <I>Lysinibacillus</I> sp.70038 degraded 9.0% of PCL at 30°C, 100 rpm, after 30 d. Scanning electron microphotograph (SEM) analysis of the degraded PCL film showed nearly 4μm of surface erosion, and the molecular weight distribution of the surface area of PCL film became broad and a low molecular weight polymer (Mn=6, 900) was confirmed by gel permeation chromatography (GPC) after cultivation.
著者
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YAMAGUCHI Takeshi
Department Biochemistry, National Institute of Agrobiological Science
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Suye Shin-ichiro
Department Of Applied Chemistry And Biotechnology Graduate School Of Engineering University Of Fukui
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Xu Shichao
Department Of Applied Chemistry And Biotechnology Graduate School Of Engineering University Of Fukui
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OSAWA SATOSHI
Department of Bioengineering and Chemistry, Kanazawa Institute of Technology
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XU SHICHAO
Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, University of Fukui
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