Growth of Pseudomonas sp TX1 on a wide range of octylphenol polyethoxylate concentrations and the formation of dicarboxylated metabolites

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Title:	Growth of Pseudomonas sp TX1 on a wide range of octylphenol polyethoxylate concentrations and the formation of dicarboxylated metabolites
Authors:	Lin,YW;Guo,GL;Hsieh,HC;Huang,SL
Contributors:	生命科學系
Keywords:	ENDOCRINE-DISRUPTING COMPOUNDS;ALKYLPHENOL ETHOXYLATES;MASS-SPECTROMETRY;DEGRADATION-PRODUCTS;NONIONIC SURFACTANTS;NONYLPHENOL POLYETHOXYLATES;BACTERIAL BIODEGRADATION;ETHER CARBOXYLATES;ENVIRONMENTAL FATE;SPHINGOMONAS SP
Date:	2010
Issue Date:	2012-03-27 18:09:16 (UTC+8)
Publisher:	國立中央大學
Abstract:	Pseudomonas sp. TX1, is able to use octylphenol polyethoxylates (OPEO(n), or Triton (R) X-100; average n = 9.5) as a sole carbon source. It can grow on 0.05-20% of OPEO(n) with a specific growth rate of 0.34-0.44 h(-1). High-performance liquid chromatography-mass spectrometer analysis of OPEO(n) degraded metabolites revealed that strain TX1 was able to shorten the ethoxylate chain and produce octylphenol (OP). Furthermore, formation of the short carboxylate metabolites. such as carboxyoctylphenol polyethoxylates (COPED(n), n = 2, 3) and carboxyoctylphenol polyethoxycarboxylates (COPEC(n), n = 2, 3) began at the log stage, while octylphenol polyethoxycarboxylates (OPEC(n), n = 1-3) was formed at the stationary phase. All the short-ethoxylated metabolites, OPEO(n), OPEC(n). COPED(n), and COPEC(n), accumulated when the cells were in the stationary phase. This study is the first to demonstrate the formation of COPED(n) and COPEC(n) from OPEO(n) by an aerobic bacterium. (C) 2009 Elsevier Ltd. All rights reserved.
Relation:	BIORESOURCE TECHNOLOGY
Appears in Collections:	[Department of Life Science] journal & Dissertation

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