Abstract
Sugar is very important raw material of many industries such as food, beverage and renewable energy. In this research, pretreatment and hydrolysis of agricultural wastes to produce reducing sugars for an ethanol production were investigated. The rice stalk and corn stover from agricultural wastes were firstly pretreated with sodium hydroxide at 121 °C in different time as 20 30 and 40 minutes for removal of lignin. After that, the condition of hydrolysis using sulfuric acid of the pretreated rice stalk and corn stover was optimized. The optimum condition that obtained the highest reducing sugar content from rice stalk and corn stover of 76.12 and 136.25 mg/ml were using 1.0 % v/v sulfuric acid at temperature of 121 °C for a hydrolysis time of 40 minutes. This research made value adding in the industrial processing, decrease environmental problem and reduce global warming crisis by optimized utilization of agricultural waste.
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