In this study, the effect of different inoculum sizes Rhizopus oligosporus on solid-state fermented (SSF) cocoyam (Colocasia esculenta) was evaluated. The results study show that samples with R. at (5-30%) had statistically higher activity α-amylase, as well levels proteins and glucose, but significantly reduced pH reducing sugar contents (p<0.05) compared to control (0%) after 72 h fermenta...