Abstract

Mehmet A. Mazmanci, Ali

In this study, the decolourizations of 36 different textile dyestuffs were studied with 6 different white rot fungi by solid state fermentation. Extra cellular enzymes secreted by fungi and total protein analyses were carried out in culture extracts obtained, according to the enzyme analyses, the highest activity was found in Laetiporus sulphurous and Coriolus versicolor. In our experiments involving dyes, it was found that 2 different dyestuffs were removed with culture extracts of various fungi but the most rapid and efficient dye remove occurred with L. sulphurous and C. versicolor for Levafix blue CA and Procion dark blue H-EXL dyestuffs. The optimum conditions for the above mentioned process were pH 4.0 for all media and temperature was 65°C for both fungi culture extracts with Levafix blue CA and 55°C for Procion dark blue H-EXL. The optimum enzyme amount was found to be 35 and 25 l for L. sulphureus using Levafix blue CA and Procion dark blue H-EXL respectively. It was found as 45 and 60 l for C. versicolor. The results show that the enzyme catalyzing the reactions of dye remove of Levafix blue CA and Procion dark blue H-EXL was laccase, when comparing with the information in literature.