In this study, the effect of physicochemical parameters on the pectinase produced by Bacillus licheniformis isolated from agriculture waste dump site was evaluated using submerged fermentation. Glucose as sole carbon source did not result in the production of pectinase is an indication that the production of pectinase in Bacillus licheniformis is inducible and not constitutive. Dosanjh and Hoondal (1996) reported that production of pectinase using 1% glucose as a sole carbon source is an indication of constitutive nature of pectinase production, pectinases are produced by inductive effects of pectin containing substances as seen in this study; some organism produce this enzyme
both constitutively and inductively. Glucose is known to repress the transcription of genes encoding enzymes required for the utilization of alternative carbon sources; some of these genes are also repressed by other sugars such as galactose, sucrose, arabinose and the process is known as catabolite repression (Chellegatti et al., 2000; Beg et al., 2001).Orange bagasse gave the optimum yield which is in agreement