Among four yeast strains with the capability of decoloring indigo carmine isolated from sludge samples taken from the textile wastewater treatment facility by enrichment cultivate,a strain Y-1 was selected on the basis of excellent dye decolorization.The strain exhibited 95.85% decolorization ability within 14h at a dye concentration of 60 mg·L-1.The absorption peak in 602nm was almost completely disappeared while the absorption in UV district was decreased.With the further analysis the decolorization mecha...