Varying responses were obtained when different inoculum sizes were used for enzyme production with the four substrates. Highest activity was again obtained for potato peel as the value increased from zero for an inoculum level of 10% to reach 0.67 Units at 50% before decreasing again (Fig. 5). No activity could be measured for the banana peel. Inoculum level
did not affect enzyme production (P > 0.05) while the substrates had a significant impact on yield (P < 0.05).