title: Aerobic decolorization and degradation of azo dyes by growing cells of a newly isolated yeast Candida tropicalis TL-F1.
abstract: The aim of this work was to investigate the decolorization and degradation of azo dyes by growing cells of a new yeast strain TL-F1 which was isolated from the sea mud. Strain TL-F1 was identified as Candida tropicalis on the basis of 28S rDNA analysis. Various azo dyes (20mg/L) were efficiently decolorized through aerobic degradation. Meantime, the effects of different parameters on both decolorization of Acid Brilliant Scarlet GR and growth of strain TL-F1 were investigated. Furthermore, possible degradation pathway of the dye GR was proposed through analysis of metabolic products using UV-Vis spectroscopy and HPLC-MS methods. As far as it is known, it is the first systematic research on a C. tropicalis strain which is capable of efficiently decolorizing various azo dyes under aerobic condition. This work provides a potentially useful microbial strain TL-F1 for treatment of azo dye contaminated wastewater.
authors.affiliation: School of Life Science, Liaoning Normal University, Dalian 116081, China. tanliang19811210@yahoo.cn
authors.forename: Liang
authors.initials: L
authors.lastname: Tan
authors.forename: Shuxiang
authors.initials: S
authors.lastname: Ning
authors.forename: Xuwang
authors.initials: X
authors.lastname: Zhang
authors.forename: Shengnan
authors.initials: S
authors.lastname: Shi
mesh_terms: D000332:Aerobiosis / Q000187:drug effects; D001391:Azo Compounds / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D041022:Candida tropicalis / Q000166:cytology / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism*; D003116:Color; D004396:Coloring Agents; D006863:Hydrogen-Ion Concentration / Q000187:drug effects; D010802:Phylogeny; D013395:Sucrose / Q000494:pharmacology; D013696:Temperature; D014508:Urea / Q000494:pharmacology
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D013395:Sucrose; D014508:Urea