Biodegradation of dimethyl terephthalate by Pasteurella multocida Sa follows an alternative biochemical pathway
Li, JX; Gu, JD; jdgu@hkucc.hku.hk
2006
发表期刊ECOTOXICOLOGY
ISSN0963-9292
卷号15期号:4页码:391-397
摘要Pasteurella multocida Sa, a bacterial strain isolated from mangrove sediment by enrichment technique, was capable of transforming dimethyl terephthalate (DMT). Biodegradation of DMT was shown to take place as a series of sequential steps involving the hydrolysis of two ester linkages between the carboxyl groups of the terephthalate and the methyl side-chain initially to produce mono-methyl terephthalate (MMT) and then terephthalic acid (TA), respectively. However, with ethanol as the carrying solvent, there was a formation of one metabolite previously not observed. The two metabolites were characterized by high performance-liquid chromatography-electron ionization mass spectrometry as MMT and mono-ethyl terephthalate (MET), suggesting the existence of an alternative biochemical pathway in the degradation of DMT by P. multocida Sa. Since the presence of MMT and ethanol in culture inoculated with P. multocida Sa was prerequisites for the formation of MET, biologically mediated trans-esterification was proposed as a mechanism for the novel biochemical process observed.
部门归属Univ Hong Kong, Dept Ecol & Biodivers, Hong Kong, Hong Kong, Peoples R China; Chinese Acad Sci, S China Sea Inst Oceanog, Key Lab Trop Marine Environm Dynam, Guangzhou 510301, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; Univ Hong Kong, Dept Ecol & Biodivers, Lab Environm Toxicol, Hong Kong, Hong Kong, Peoples R China; Univ Hong Kong, Swire Inst Marine Sci, Hong Kong, Hong Kong, Peoples R China
关键词Dimethyl Terephthalate Biodegradation Esterase Plasticiser Trans-esterification
学科领域Ecology ; Environmental Sciences ; Toxicology
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收录类别sci
资助项目LED
WOS记录号WOS:000238518000012
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被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/5791
专题热带海洋环境国家重点实验室(LTO)
通讯作者jdgu@hkucc.hku.hk
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Li, JX,Gu, JD,jdgu@hkucc.hku.hk. Biodegradation of dimethyl terephthalate by Pasteurella multocida Sa follows an alternative biochemical pathway[J]. ECOTOXICOLOGY,2006,15(4):391-397.
APA Li, JX,Gu, JD,&jdgu@hkucc.hku.hk.(2006).Biodegradation of dimethyl terephthalate by Pasteurella multocida Sa follows an alternative biochemical pathway.ECOTOXICOLOGY,15(4),391-397.
MLA Li, JX,et al."Biodegradation of dimethyl terephthalate by Pasteurella multocida Sa follows an alternative biochemical pathway".ECOTOXICOLOGY 15.4(2006):391-397.
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