Profiles of enzyme activities produced by A. niger grown on banana peel as the carbon source (SMBP medium). A Amylase activity, B β-glucanase activity, C CMCase activity, D invertase activity, E pectinase activity, and F xylanase activity. The enzyme activities were determined in 50 mM sodium acetate buffer, pH 5.5 at 50 °C. The measurements were done in triplicate