Isolation and characterization of a novel e-caprolactamdegrading microbe, Acinetobacter calcoaceticus, from industrial wastewater by chemostat-enrichment

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Title
Isolation and characterization of a novel e-caprolactamdegrading microbe, Acinetobacter calcoaceticus, from industrial wastewater by chemostat-enrichment
Author(s)
S Rajoo; Jungoh AhnHong-Weon Lee; Joon Ki Jung
Bibliographic Citation
Biotechnology Letters, vol. 35, no. 12, pp. 2069-2072
Publication Year
2013
Abstract
For the isolation of a ε-caprolactam-degrading microbe from wastewaters of a factory producing caprolactam, we applied a chemostat-enrichment technique with a selective medium containing caprolactam as sole source of carbon and nitrogen. This allowed for the isolation of a novel caprolactam-degrading microbe, identified as Acinetobacter calcoaceticus. The strain had a critical tolerance of 19 g caprolactam l-1 in minimal medium, which is higher than any previously reported caprolactam-degrading microbe. A. calcoaceticus also decreased the caprolactam content in medium by 65 % within 72 h despite the high caprolactam content (10 g l-1). This study highlights the potential use of A. calcoaceticus strain for the bioremediation of recalcitrant synthetic polymers, such as caprolactam.
Keyword
ε-CaprolactamAcinetobacter calcoaceticusBioremediationChemostat-enrichmentIndustrial wastewaterMicrobial degradation
ISSN
0141-5492
Publisher
Springer
DOI
http://dx.doi.org/10.1007/s10529-013-1307-2
Type
Article
Appears in Collections:
Division of Bio Technology Innovation > BioProcess Engineering Center > 1. Journal Articles
Division of Bio Technology Innovation > 1. Journal Articles
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