pretreatment on SSF, the of enzyme as used for enzymatic hydrolysis and 7% (v/v) yeast (Saccharomyces cerevisiae CHY 1011) were added to each sample with a working volume
of 100 mL. The operating conditions for SSF were at 32 ◦C and pH 4.8 on a shaking
incubator at 150 rpm for 72 h