Abstract:
:Biodegradation experiments with radioactively labeled trichloroethylene showed that 32% of the radioactive carbon was converted to glyoxylic acid, dichloroacetic acid and trichloroacetic acid and that the same percentage was converted to CO2 and CO after 140 h of incubation by a pure culture of a type II methane-utilizing bacterium, Methylocystis sp. strain M, isolated from a mixed culture, MU-81, in our laboratory. In contrast, these water-soluble (14C)trichloroethylene degradation products were completely or partially degraded further and converted to CO2 by the MU-81 mixed culture. This phenomenon was attributed to the presence of a heterotrophic bacterium (strain DA4), which was identified as Xanthobacter autotrophicus, in the MU-81 culture. The results indicate that the heterotrophic bacteria play an important role in complete trichloroethylene degradation by methanotrophs.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Uchiyama H,Nakajima T,Yagi O,Nakahara Tdoi
10.1128/AEM.58.9.3067-3071.1992keywords:
subject
Has Abstractpub_date
1992-09-01 00:00:00pages
3067-71issue
9eissn
0099-2240issn
1098-5336journal_volume
58pub_type
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