- Isolation and characterization of aerobic bacterial strains capable of decolorizing synthetic textile dyes.
Abstract: A total of 20 bacterial strains were isolated from dyeing industry environmental treatment plant sample. Among those two bacterial strains (A1 and CF) were found to decolorize textile anthraquinone dye Reactive blue 19. Both of the strains were found to have similarities with members of genus Pseudomonas. Among them strain A1 decolorize RB19 under both static and shaking condition, but strain CF decolorize only under static condition. CF was chosen for further study due to its faster growth rate. Decolorization activity was found to be associated with bacterial growth. Optimum temperature and pH for Decolorization were observed around 30oC and 8 respectively. CF can tolerate and decolorize as much as 5000µg/ml dye. Decolorization was achieved repeatedly under batch condition at least for three times. CF does not utilized RB19 as sole carbon source. Decolorization occurs into simple defined medium devoid of any growth factor, but at a slower rate.
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