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Title of Journal: Ecotoxicology

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Abbravation: Ecotoxicology

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Springer US

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1573-3017

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Degradation of dimethyl carboxylic phthalate ester

Authors: Yali Wang Bo Yin Yiguo Hong Yan Yan JiDong Gu
Publish Date: 2008/07/24
Volume: 17, Issue: 8, Pages: 845-
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Abstract

Burkholderia cepacia DA2 isolated from marine sediment of the South China Sea is capable of utilizing dimethyl phthalate DMP as the sole source of carbon and energy During the transformation of DMP in batch culture its corresponding degradation intermediates were identified as monomethyl phthalate MMP and phthalate acid PA sequentially over the time of incubation The biodegradation biochemical pathway of DMP was DMP to MMP and then to PA before mineralization Degradation of DMP by B cepacia DA2 was also dependent upon DMPinduction and the initial concentrations of DMP affected the degradation rate Degradation kinetics fit well with the modified Gompertz model The optimum pH and salinity was 60 and 5‰ respectively for DMP degradation by B cepacia DA2 This study showed that the indigenous microorganisms of the deepocean sediments are capable of DMP degradation completely

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