earticle

영어

Lignocellulose is difficult to hydrolyze due to the presence of lignin and the technology developed for cellulose fermentation to ethanol is not yet economically viable. However, recent advances in biotechnology for the ethanol production are making it possible to use of agriculture residual biomass because of low lignin, high contents of carbohydrates. The pretreatment of
barley straw using RSM with various pretreatment solutions can significantly improve enzymatic saccharification of barley straw by extract more lignin and xylose and increasing its accessibility to hydrolytic enzymes. The result showed optimum alkali pretreatment condition was NaOH 8.36 % at 113.74 °C and 1.00 hr with optimum extracted yield of lignin and xylose was respectively
56.95 % and 47.21 %. Optimum acid pretreatment condition was Oxalic-acid 3.01 % at 126.49 °C and 1.00 hr with optimum extracted yield of lignin and xylose was respectively 5.41 % and 85.92 %. Shaccharification and fermentation of barley straw pretreatment by NaOH result in optimum
glucose and ethanol concentration 31.56 g/L and 15.54 g/L respectively and by Oxalic-Acid result in optimum glucose and ethanol concentration 26.71 g/L and 12.49 g/L respectively.