Production of Trichloroacetic Acid, Trichloroethanol and Dichloroacetic Acid from Trichloroethylene Degradation byMethylocystissp. Strain M

Autor:	Kazuhiro Iwasaki, Satoshi Saeki, Osami Yagi, Satoshi Mukai
Rok vydání:	1999
Předmět:	food.ingredient Chromatography biology Trichloroethylene Chemistry Chloral Dichloroacetic acid Biodegradation biology.organism_classification Biochemistry Catalysis chemistry.chemical_compound food Biotransformation Methylocystis Organic chemistry Trichloroacetic acid Bacteria Biotechnology
Zdroj:	Biocatalysis and Biotransformation. 17:347-357
ISSN:	1029-2446 1024-2422
DOI:	10.3109/10242429909015235
Popis:	The chlorinated organic compounds, trichloroacetic acid (TCAA), 2, 2, 2-trichloroethanol (TCAol), dichloroacetic acid (DCAA) and chloral were produced from the biotransformation of trichloroethylene (TCE) by a methane utilizing bacterium Methylocystis sp. strain M. The degradation of TCE by strain M was influenced by pH, with an optimum between 6 and 7. The conversions to TCAA, TCAol and DCAA derived from added TCE were 7.8%, 0.04% and 1.8%, respectively, at pH 7, and varied with pH. The reactions that convert chloral to these metabolites were also influenced by pH. The conversions to TCAA, TCAol and DCAA from added chloral were 77%, 0.6% and 6.0%, respectively, at pH 7. Strain M did not degrade TCAA, TCAol and DCAA, which were shown to be end products of TCE degradation by strain M. The production of DCAA from chloral suggested a new pathway for producing DCAA via chloral, in addition to that via TCEoxide. Thrity-four percent and 66% of DCAA produced from TCE were derived via chloral and TCEoxide, respec...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8200fbaf75e954b2b5277efb45cae5bf https://doi.org/10.3109/10242429909015235 Zobrazit plný text záznamu