title: Aerobic decolorization and degradation of azo dyes by suspended growing cells and immobilized cells of a newly isolated yeast Magnusiomyces ingens LH-F1.
abstract: Aerobic decolorization and degradation of azo dyes by both of suspended growing cells and immobilized cells of a newly isolated yeast strain LH-F1 were investigated in this study. A yeast strain LH-F1 capable of aerobically decolorizing various azo dyes (20mg/L) was identified as Magnusiomyces ingens basing on 26S rDNA analysis. Meanwhile, effects of different parameters on decolorization of Acid Red B by both of suspended growing cells and immobilized cells of strain LH-F1 were investigated. Furthermore, possible degradation pathway of the dye was proposed through analyzing metabolic intermediates using UV-Vis and HPLC-MS methods. As far as it is known, it is the first systematic research on a M. ingens strain which is capable of efficiently decolorizing azo dyes under aerobic condition. Additionally, this work would also provide a potentially useful microbial strain LH-F1 for treatment of industrial wastewaters containing azo dyes.
authors.affiliation: School of Life Science, Liaoning Normal University, Dalian 116081, China. Electronic address: tanliang19811210@163.com.
authors.forename: Liang
authors.initials: L
authors.lastname: Tan
authors.affiliation: School of Life Science, Liaoning Normal University, Dalian 116081, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Li
authors.affiliation: School of Life Science, Liaoning Normal University, Dalian 116081, China.
authors.forename: Shuxiang
authors.initials: S
authors.lastname: Ning
authors.affiliation: Laboratory of Aquatic Products Quality and Safety Inspection, Dalian City Fisherles Technical Extension Station, Dalian 116024, China.
authors.forename: Bingwen
authors.initials: B
authors.lastname: Xu
mesh_terms: D000332:Aerobiosis; D001391:Azo Compounds / Q000378:metabolism*; D003116:Color; D009282:Naphthalenesulfonates / Q000378:metabolism*; D004718:Saccharomycetales / Q000254:growth & development / Q000378:metabolism*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D001391:Azo Compounds; D009282:Naphthalenesulfonates; C521611:acid red B
keywords: Aerobic decolorization and degradation; Azo dyes; Decolorization pathways; Immobilization; Magnusiomyces ingens