Comparative study of various pretreatment techniques for rice straw saccharification for the production of alcoholic biofuels

► Utilization of rice straw as feedstock for the production of alcoholic biofuels. ► Comparative evaluation of the effect of various pretreatment processes on rice straw. ► Anaerobic fermentation of rice straw hydrolyzate with C. acetobutylicum MTCC 481. ► Best ABE yield for hydrolyzate with enzyme assisted acid hydrolysis. ► Best yield: acetone: 0.11, butanol: 0.861, ethanol: 0.05.