Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 5, Pages 4111-4116Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.12.064
Keywords
Petroleum; Pseudomonas aeruginosa; Biodegradation; Polycyclic aromatic hydrocarbons; n-Alkane
Funding
- Daqing Oilfield Co., Ltd., China National Petroleum Corporation [DQYT-1201002-2007-JS-9128]
- Chinese National Program for High Technology Research and Development [2007AA061101, 2007AA10Z401]
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A bacterial isolate, designated as DQ8, was found capable of degrading diesel, crude oil, n-alkanes and polycyclic aromatic hydrocarbons (PAHs) in petroleum. Strain DQ8 was assigned to the genus Pseudomonas aeruginosa based on biochemical and genetic data. The metabolites identified from n-docosane as substrate suggested that P. aeruginosa DQ8 could oxidize n-alkanes via a terminal oxidation pathway. P. aeruginosa DQ8 could also degrade PAHs of three or four aromatic rings. The metabolites identified from fluorene as substrate suggested that P. aeruginosa DQ8 may degrade fluorene via two pathways. One is monooxygenation at C-9 of fluorene, and the other is initiated by dioxygenation at C-3 and C-4 of fluorene. P. aeruginosa DQ8 should be of great practical significance both in bioremediation of oil-contaminated soils and biotreatment of oil wastewater. (C) 2010 Elsevier Ltd. All rights reserved.
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