title: Biodegradation of benzidine based dye Direct Blue-6 by Pseudomonas desmolyticum NCIM 2112.
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.
authors.affiliation: Department of Biochemistry, Shivaji University, Kolhapur 416 004, India.
authors.forename: S D
authors.initials: SD
authors.lastname: Kalme
authors.forename: G K
authors.initials: GK
authors.lastname: Parshetti
authors.forename: S U
authors.initials: SU
authors.lastname: Jadhav
authors.forename: S P
authors.initials: SP
authors.lastname: Govindwar
mesh_terms: D000704:Analysis of Variance; D001391:Azo Compounds / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002851:Chromatography, High Pressure Liquid; D042845:Laccase / Q000378:metabolism; D014442:Monophenol Monooxygenase / Q000378:metabolism; D010544:Peroxidases / Q000378:metabolism; D011549:Pseudomonas / Q000378:metabolism*; D013057:Spectrum Analysis; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D001391:Azo Compounds; D014874:Water Pollutants, Chemical; C017261:direct blue 6; D042845:Laccase; D010544:Peroxidases; C042858:lignin peroxidase; D014442:Monophenol Monooxygenase