Fig. 4b. The pH values increased from 5.5 to 7.9 and 6.2 after 24 h of incubation and reached final values of 9.05 and 8.7 for stirred and static cultures, respectively.
(Fig. 4c and d). As observed by Dirk et al. (2003), the fungus produces organic compounds during the starting of growth period, which will be decomposed later by enzymes.