Biodegradation of anthracene by a novel actinomycete, Microbacterium sp. isolated from tropical hydrocarbon-contaminated soil |
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Authors: | Lateef B. Salam Oluwafemi S. Obayori Nojeem O. Olatoye |
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Affiliation: | 1. Department of Microbiology, Faculty of Science, Lagos State University, Ojo, Lagos, Nigeria
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Abstract: | A novel anthracene-degrading Gram-positive actinomycete, Microbacterium sp. strain SL10 was isolated from a hydrocarbon-contaminated soil at a mechanical engineering workshop in Lagos, Nigeria. The polluted soil had an unusually high total hydrocarbon content of 157 g/kg and presence of various heavy metals. The isolate tolerated salt concentration of more than 4 %. It resisted cefotaxime, streptomycin and ciprofloxacin, but susceptible to meropenem, linezolid and vancomycin. The isolate exhibited growth rate and doubling time of 0.82 days-1 and 0.84 days, respectively on anthracene. It degraded 57.5 and 90.12 % of anthracene within 12 and 21 days, respectively while the rate of anthracene utilization by the isolate was 4.79 mg l-1 d-1. To the best of our knowledge, this is the first report of isolation and characterization of anthracene-degrading Microbacterium sp. |
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