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ISSN: 2155-6199

Journal of Bioremediation & Biodegradation
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Research Article

Biological Degradation of Naphthalene: A New Era

Pawar AN, Ugale SS, More MG, Kokani NF, Khandelwal SR*
Department of Microbiology, Institute of Life Science, H.P.T Arts and R.Y.K Science College, Nashik 422005MS, India
Corresponding Author : Khandelwal SR
Department of Microbiology
Institute of Life Science
H.P.T Arts and R.Y.K Science College
Nashik 422005MS, India
Tel: 919881121023
E-mail: [email protected]
Received July 20, 2013; Accepted September 03, 2013; Published September 09, 2013
Citation: Pawar AN, Ugale SS, More MG, Kokani NF, Khandelwal SR (2013) Biological Degradation of Naphthalene: A New Era. J Bioremed Biodeg 4:203. doi: 0.4172/2155-6199.1000203
Copyright: © 2013 Pawar AN, 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

Naphthalene is a simplest Polycyclic Aromatic Hydrocarbon (PAH). PAHs are major contaminants of environment, associated with common anthropogenic activities such as oil refineries and incomplete combustion of fossil fuels. PAHs are toxic, mutagenic and carcinogenic. Isolation of naphthalene degrading bacteria is recommended using a complex ONR 7a medium. Present work includes a modified medium with Naphthalene as a sole source of carbon. Four isolates were screened from marine sample collected from Mumbai as well as petroleum soil sample from Trimbak road Satpur, Nashik. Further characterization using morphological and biochemical tests showed resemblance with Gram positive bacteria as well as Gram negative bacteria, belonging to genus such as Micrococcus spp, Bacillus spp, Staphylococcus spp, Pseudomonas spp. These strains were further grown in modified broth for 45 days as well as on ONR 7a agar medium. In turbidometric assay Bacillus spp showed significant growth at 1 mg/ ml of naphthalene concentration. Catechol which is a intermediate product which generated through biodegradation of naphthalene was detected by Winkelmann modified Arnow’s method. All four isolates efficiently degraded naphthalene which was confirmed by Arnow’s test. These naphthalene degraders could be further checked and explored for their efficiency in bioremediation of polluted marine environment and in oil contaminated fields.

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