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Degradation of high molecular weight polycyclic aromatic hydrocarbons by Pseudomonas cepacia

Three strains of Pseudomonas cepacia degraded the PAHs benzo[a]pyrene, dibenz[a,h]anthracene, and coronene as sole carbon and energy sources. The inocula contained high cell densities. After 63 days of incubation, benzo[a]pyrene and dibenz[a,h]anthracene concentrations decreased by 30% and coronene...

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Bibliographic Details
Published in:Biotechnology letters 1996-05, Vol.18 (5), p.577-582
Main Authors: JUHASZ, A. L, BRITZ, M. L, STANLEY, G. A
Format: Article
Language:English
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Summary:Three strains of Pseudomonas cepacia degraded the PAHs benzo[a]pyrene, dibenz[a,h]anthracene, and coronene as sole carbon and energy sources. The inocula contained high cell densities. After 63 days of incubation, benzo[a]pyrene and dibenz[a,h]anthracene concentrations decreased by 30% and coronene concentration decreased by 65-70%. The three strains also were able to degrade all the PAHs at once in a PAH substrate mixture containing three-, four-, five-, and seven-benzene ring compounds. In addition, the five- and seven-benzene ring compounds showed improved degradation in the presence of low-molecular-weight PAHs.
ISSN:0141-5492
1573-6776
DOI:10.1007/bf00140206