Journal
POLYMER DEGRADATION AND STABILITY
Volume 93, Issue 5, Pages 883-888Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2008.02.005
Keywords
poly(butylenes succinate); fungi; biodegradation; Aspergillus fumigatus; strain NKCM 1706
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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.
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