Fed-batch decolorization of Poly R-478 by Trametes versicolor

physiological aspects were evaluated to determine optimal conditions for the decolorization of a synthetic dye, poly r-478, by white-rot fungus trametesversicolor # 52j. the decolorization experiments were carried out in semicontinuous operation during three cycles to improve the process efficiency. the best decolorization efficiencies (65% to 80%) were obtained in fungal cultures performed in nitrogen limited conditions under aerobic conditions.