Microbial diversity of oil spills and tar resistant bacteria isolated from beaches of Goa (India)
Keywords:Goan beaches, Halophiles, Oil resistance, Oil spills, Salt tolerant bacteria, Tar pollution
Oil contaminated samples collected from seven beaches of Goa (India) were analyzed for their microbial components. The alkaline pH, the presence of oil spill and tarball residue and high salt concentration were features common of oil contaminated Goan beaches. The optimum temperature for isolating oil resistant bacteria was 23 oC. Laboratory investigation revealed the presence of diverse microbial population. Oil contaminated soil samples were found to be dominated by motile, spore-forming halophilic bacteria. Total 158 bacteria were isolated in the presence and absence of 1% phenanthrene. Of 158 isolates, 18 bacteria showing diverse characteristics were selected for further investigation. Out of 18 isolates, 16 were gram positive rods. All isolated species revealed oil resistance and salt tolerance properties.
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