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Degradation of aromatic compounds and degradative pathway of 4-nitrocatechol by Ochrobactrum sp. B2.
- Source :
-
Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering . Dec2007, Vol. 42 Issue 14, p2111-2116. 6p. 1 Diagram, 3 Charts, 4 Graphs. - Publication Year :
- 2007
-
Abstract
- The potential capacity of a soil methyl parathion-degrading bacterium strain, Ochrobactrum sp. B2, for degrading various aromatic compounds were investigated. The results showed B2 was capable of degrading diverse aromatic compounds, but amino-substituted benzene compounds, at a concentration up to 100 mg L-1 in 4 days. B2 could use 4-nitrocatechol (4-NC) as a sole carbon and energy source with release of nitrite ion. The pathway for 4-NC degradation via 1,2,4-benzenetriol (BT) and hydroquinone (HQ) formation in B2 was proposed based on the identification and quantification of intermediates by gas chromatography-mass spectrometry (GC-MS), and high performance liquid chromatography (HPLC). Degradation studies carried out on a plasmid-cured derivative showed that the genes for 4-NC degradative pathway was plasmid-borne in B2, suggesting that B2 degrades both p-nitrophenol and 4-NC by enzymes encoded by genes on the same plasmid. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10934529
- Volume :
- 42
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 27795062
- Full Text :
- https://doi.org/10.1080/10934520701627108