Isolation and characterization of poly(butylene succinate)-degrading fungi

被引:56
作者
Ishii, Nariaki [2 ]
Inoue, Yoshio [2 ]
Tagaya, Tomoko [1 ]
Mitomo, Hiroshi [1 ]
Nagai, Daisuke [1 ]
Kasuya, Ken-ichi [1 ]
机构
[1] Gunma Univ, Grad Sch Engn, Dept Chem & Chem Biol, Gunma 3768515, Japan
[2] Tokyo Inst Technol, Grad Sch Biosci & Biotechnol, Kanagawa 2268501, Japan
基金
日本科学技术振兴机构;
关键词
poly(butylenes succinate); fungi; biodegradation; Aspergillus fumigatus; strain NKCM 1706;
D O I
10.1016/j.polymdegradstab.2008.02.005
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
We isolated 12 poly(butylene succinate) (PBSu)-degrading fungi from various soil environments. Among the isolates, the NKCM1706 strain exhibited the fastest degradation rate for the PBSu film (10.5 mu g cm(-2) h(-1)). Phylogenetic analysis revealed that this strain is closely related to Aspergillus fumigatus (internal transcribed spacer (ITS) identity, 100%). Further, this strain exhibited PBSu-hydrolytic activity in the presence of poly(epsilon-caprolactone) (PCL), PBSu, and poly(butylene succinate-co-adipate) (PBSA). On adding this strain into the soil sample, the PBSu degradation rate accelerated approximately sixfold, suggesting that this strain plays a crucial role in PBSu degradation in actual soil environments. In addition to PBSu, the NKCM1706 strain could degrade PBSA, poly(ethylene succinate) (PESu), poly(3-hydroxybutyrate) (P(3HB)), and PCL. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:883 / 888
页数:6
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