Dye degradation potential and its degradative enzymes synthesis of Bacillus cereus SKB12 isolated from a textile industrial effluent

ABSTRACT

The degradation of textile dyes using microbes has been recently identified as most promising, cost effective,and eco-friendly technique than any physiochemical techniques. On this backdrop, a potential Reactive Black5 dye degrading bacterium was isolated from effluent sediment samples of a textile industry, Salem district,Tamil Nadu, India which was identified as a Bacillus cereus SKB12 based on morphological and biochemicalmethods. This bacterium exhibited promising dye degradation of Reactive Black 5 which was initiatedfrom first hours of lag phase and showed its maximum dye degradation of 88.7% at the end decline growthphase (144 hours). Furthermore, this strain revealed the synthesis of laccase, veratryl alcohol oxidase, ligninperoxidase, polyphenol oxidase, and azoreductase enzymes with the presence of Reactive Black 5 dye. Theseoverall observations proved that this strain, B. cereus SKB12 has the possibility to use as a potential textile dyeeffluent bioremediation agent