Bioconversion of Lignocellulosic Biomass, Sorghum Bicolor L. into Bioethanol
Lignocellulosic biomass is one of the most abundant renewable resources for biofuel productions and value-added
chemicals. The production of bioethanol from lignocellulosic biomass has attracted worldwide interest. The present work
apportionments with production of ethanol from sorghum stalk powderbySaccharomyces cerevisiaeTISTR 5020. The
powder was treated with sodium hydroxide, water, silage andTrichoderma spp. to enzymatic hydrolysis by
acellulaseenzyme. All of pretreatments were performed at room temperature for 3 days. The pretreatments resulted in
ameliorati0ng the following enzymatic hydrolysis to 2% of the theoretical yield overnight. The best hydrolysis performance
was obtained after pretreatment by 2% NaOH. The yeast showed promising results in fermentation for 3 days from 5 days.
In the best case, the hydrolysate of 2% NaOH pretreated. Furthermore, the highest volumetric ethanol productivity was
observed in the hydrolysatesof 2%NaOH pretreated powder.
Keywords: Bioethanol, Pretreatment, Hydrolysis, Sorghum stalks