Effect of different processing parameters on bioethanol production from corn (zea mays) cob by enzymatic hydrolysis

Corn (Zea mays) Cob is rich source of cellulose, so this cellulosic material was utilized for ethanol production. The cellulosic material was pretreated with 1% H2SO4 at 1080 C Temp. by taking 1:5 proportion (solid : liquid). The pretreated cellulosic material was hydrolyzed with cellulase enzyme (conc. in FPU) at 600 C Temp., fermented by sacchromyces serevisiae 3090 at 300 C Temp. for 72 hrs. It was found that the hydrolysis time was increased at the interval of 12 hrs., the yield of reducing sugar and ethanol yield was increased i.e. 50.30% & 28.67 % resp. The particle size was inversely proportional to ethanol yield. Also substrate concentration should be minimize as such as possible for hydrolysis because the reducing sugar & ethanol yield (24.79% & 23.99%) had a similar variation trend with cellulase dosages varying from 10 to 30 FPU/ gm. substrate.