alexa Biodegradation of benzidine based dye Direct Blue-6 by Pseudomonas desmolyticum NCIM 2112.


Industrial Engineering & Management

Author(s): Kalme SD, Parshetti GK, Jadhav SU, Govindwar SP

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Abstract Pseudomonas desmolyticum NCIM 2112 was able to degrade a diazo dye Direct Blue-6 (100 mg l(-1)) completely within 72 h of incubation with 88.95\% reduction in COD in static anoxic condition. Induction in the activity of oxidative enzymes (LiP, laccase) and tyrosinase while decolorization in the batch culture represents their role in degradation. Dye also induced the activity of aminopyrine N-demethylase, one of the enzyme of mixed function oxidase system. The biodegradation was monitored by UV-Vis, IR spectroscopy and HPLC. The final products, 4-amino naphthalene and amino naphthalene sulfonic acid were characterized by GC-mass spectroscopy. This article was published in Bioresour Technol and referenced in Industrial Engineering & Management

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