جداسازي و شناسايي قارچهاي تجزيه كننده باگاس

Isolation and identification of the bagasse degrading microorganisms

In the present study, 15 fungal samples were isolated from sugarcane bagasse which were able to grow on bagasse as the main carbon source. Morphological and microbiological studies showed that these three isolates were related to Aspergillus genus. Our experiments showed that the ability of As. niger, As terreus and, As. fumigatus for bagasse degradation were 12.54, 9.85, 3.48 percent (in ratio to bagasse dry wight) and their lignin peroxidase activities were 10.02, 9.89 and 5.56 U/L in the presence of veratryl alcohol as an lignin peroxidase inducer after 21 days incubation, respectively. Cellulase activities of 47, 58 and 39 U/L were obtained by mentioned fungi, respectively. In this study the maximum lignin degradation activity was obtained for As. niger (12.54 percent) and maximum cellulase activity was measured for As. terreus (58 U/L). It seems that these isolates are efficiently able to use bagasse as the main carbon source for production of lignolytic enzymes.