alexa Decolorization of Azo Dye (Orange MR) by an Autochthonous Bacterium, Micrococcus sp. DBS 2.
Environmental Sciences

Environmental Sciences

Journal of Petroleum & Environmental Biotechnology

Author(s): Rajee O, Patterson J

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Abstract Soil and sediment samples obtained from Orange MR dye contaminated habitat were screened for heterotrophic bacterial population. The heterotrophic bacterial density of dye-contaminated soil was 2.14 × 10(6) CFU/g. The generic composition of heterotrophic bacterial population was primarily composed of 10\% of Proteus sp., 15\% Aeromonas sp., 20\% Bacillus sp., 25\% Pseudomonas sp. and 30\% Micrococcus sp. The bacterial strain that decolorized the azo dye Orange MR up to 900 ppm was identified as Micrococcus sp. The optimum inoculum load, pH and temperature were found to be 5\%, 6 and 35°C, respectively. The rate of decolorization was assessed using spectrophotometer at 530 nm and the percentage of decolorization was ascertained. The autochthonous bacterial isolate was able to utilize the dye as both nitrogen and carbon source.
This article was published in Indian J Microbiol and referenced in Journal of Petroleum & Environmental Biotechnology

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