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Hindi Research Article
Catabolic Versatility of Sphingobium sp. Strain PNB Capable of Degrading Structurally Diverse Aromatic Compounds
| Madhumita Roy, Pratick Khara, Soumik Basu and Tapan K Dutta* | |
| Department of Microbiology, Bose Institute, Kolkata, India | |
| Corresponding Author : | Tapan K Dutta Department of Microbiology Bose Institute P-1/12 C.I.T. Scheme VII M Kolkata, India Tel: +913325693241 Fax: +913323553886 E-mail: tapan@bic.boseinst.ernet.in |
| Received: October 15, 2012; Accepted: November 22, 2012; Published: November 24, 2012 | |
| Citation: Roy M, Khara P, Basu S, Dutta TK (2013) Catabolic Versatility of Sphingobium sp. Strain PNB Capable of Degrading Structurally Diverse Aromatic Compounds. J Bioremed Biodeg 4:173. doi:10.4172/2155-6199.1000173 | |
| Copyright: © 2013 Roy M, et al. This is an open-a ccess article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |
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Abstract
Sphingobium sp. strain PNB isolated from municipal waste-contaminated soil had already been described to
possess catabolic potential of assimilating phenanthrene. Apart from phenanthrene, strain PNB was found to be capable of utilizing naphthalene and biphenyl singly, as sole carbon and energy sources. Based on chromatographic and spectrophotometric analyses, pathways for the degradation of naphthalene and biphenyl were revealed in strain PNB. Anthracene, on the other hand, was found to be partially metabolized, furnishing 9,10-anthraquinone and 3-hydroxy-2-naphthoic acid, which appeared as the dead-end products. In addition, strain PNB was observed to co-metabolize fluoranthene, acenaphthene, benz[a]anthracene, pyrene and benzo[a]pyrene, in presence of phenanthrene indicating metabolic robustness of the strain, which may serve as a candidate organism in the bioremediation of Polycyclic Aromatic Hydrocarbons (PAHs)-contaminated environment.
