title: Decolorisation, biodegradation and detoxification of benzidine based azo dye.
abstract: The present study deals with the decolorisation, biodegradation and detoxification of Direct Black-38, a benzidine based azo dye, by a mixed microbial culture isolated from an aerobic bioreactor treating textile wastewater. The studies revealed a biotransformation of Direct Black-38 into benzidine and 4-aminobiphenyl followed by complete decolorisation and biodegradation of these toxic intermediates. From cytotoxicity studies, it was concluded that detoxification of the dye took place after degradation of the toxic intermediates by the culture.
authors.affiliation: Environmental Biotechnology Division, National Environmental Engineering Research Institute (NEERI), Nagpur-440 020, India.
authors.forename: Koel
authors.initials: K
authors.lastname: Kumar
authors.forename: S
authors.initials: S
authors.lastname: Saravana Devi
authors.forename: K
authors.initials: K
authors.lastname: Krishnamurthi
authors.forename: S
authors.initials: S
authors.lastname: Gampawar
authors.forename: Nilesh
authors.initials: N
authors.lastname: Mishra
authors.forename: G H
authors.initials: GH
authors.lastname: Pandya
authors.forename: T
authors.initials: T
authors.lastname: Chakrabarti
mesh_terms: D000327:Adsorption; D000641:Ammonia / Q000378:metabolism; D001391:Azo Compounds / Q000737:chemistry* / Q000378:metabolism* / Q000494:pharmacology; D001560:Benzidines / Q000737:chemistry* / Q000378:metabolism* / Q000494:pharmacology; D001673:Biodegradation, Environmental; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D002851:Chromatography, High Pressure Liquid; D004396:Coloring Agents / Q000378:metabolism* / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000378:metabolism; D015394:Molecular Structure; D013056:Spectrophotometry, Ultraviolet
chemical_list: D001391:Azo Compounds; D001560:Benzidines; D004396:Coloring Agents; C029876:benzidine; D000641:Ammonia