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 (20 mg/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.