Biotransformation of 2,7-dichloro- and 1,2,3,4-tetrachlorodibenzo-p-dioxin by Sphingomonas wittichii RW1
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- Title
- Biotransformation of 2,7-dichloro- and 1,2,3,4-tetrachlorodibenzo-p-dioxin by Sphingomonas wittichii RW1
- Authors
- Hong, HB; Chang, YS; Nam, IH; Fortnagel, P; Schmidt, S
- Date Issued
- 2002-05
- Publisher
- AMER SOC MICROBIOLOGY
- Abstract
- Aerobic biotransformation of the diaryl ethers 2,7-dichlorodibenzo-p-dioxin and 1,2,3,4-tetrachlorodibenzo-p-dioxin by the dibenzo-p-dioxin-utilizing strain Sphingomonas wittichii RW1, producing corresponding metabolites, was demonstrated for the first time. Our strain transformed 2,7-dichlorodibenzo-p-dioxin, yielding 4-chlorocatechol, and 1,2,3,4-tetrachlorodibenzo-p-dioxin, producing 3,4,5,6-tetrachlorocatechol and 2-methoxy-3,4,5,6-tetrachlorophenol; all of these compounds were unequivocally identified by mass spectrometry both before and after N,O-bis(trimethylsilyl)-trifluoroacetamide derivatization by comparison with authentic standards. Additional experiments showed that strain RW1 formed a second metabolite, 2-methoxy-3,4,5,6-tetrachlorophenol, from the original degradation product, 3,4,5,6-tetrachlorocatechol, by methylation of one of the two hydroxy substituents.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/9349
- DOI
- 10.1128/AEM.68.5.2584-2588.2002
- ISSN
- 0099-2240
- Article Type
- Article
- Citation
- APPLIED AND ENVIRONMENTAL MICROBIOLOGY, vol. 68, no. 5, page. 2584 - 2588, 2002-05
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