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Int. J. Environ. Res. Public Health 2015, 12(9), 11829-11847; doi:10.3390/ijerph120911829

Biodegradation of Decabromodiphenyl Ether (BDE-209) by Crude Enzyme Extract from Pseudomonas aeruginosa

1
School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2
Dapartment of Biotechnology, Daqing Branch of Heilongjiang Academy of Science, Daqing 163319, China
*
Author to whom correspondence should be addressed.
Academic Editor: Oladele A. Ogunseitan
Received: 23 July 2015 / Revised: 7 September 2015 / Accepted: 9 September 2015 / Published: 18 September 2015
(This article belongs to the Special Issue Hazardous Waste and Human Health)
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Abstract

The biodegradation effect and mechanism of decabromodiphenyl ether (BDE-209) by crude enzyme extract from Pseudomonas aeruginosa were investigated. The results demonstrated that crude enzyme extract exhibited obviously higher degradation efficiency and shorter biodegradation time than Pseudomonas aeruginosa itself. Under the optimum conditions of pH 9.0, 35 °C and protein content of 2000 mg/L, 92.77% of the initial BDE-209 (20 mg/L) was degraded after 5 h. A BDE-209 biodegradation pathway was proposed on the basis of the biodegradation products identified by GC-MS analysis. The biodegradation mechanism showed that crude enzyme extract degraded BDE-209 into lower brominated PBDEs and OH-PBDEs through debromination and hydroxylation of the aromatic rings. View Full-Text
Keywords: BDE-209; biodegradation; Pseudomonas aeruginosa; crude enzyme extract; biodegradation mechanism BDE-209; biodegradation; Pseudomonas aeruginosa; crude enzyme extract; biodegradation mechanism
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Liu, Y.; Gong, A.-J.; Qiu, L.-N.; Li, J.-R.; Li, F.-K. Biodegradation of Decabromodiphenyl Ether (BDE-209) by Crude Enzyme Extract from Pseudomonas aeruginosa. Int. J. Environ. Res. Public Health 2015, 12, 11829-11847.

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