As an important agricultural waste,corn cob is one of the most abundant lignocellulosic biomass.In this work,dilute acid pretreatment using seven different organic acids were compared for compositional analysis of cor...As an important agricultural waste,corn cob is one of the most abundant lignocellulosic biomass.In this work,dilute acid pretreatment using seven different organic acids were compared for compositional analysis of corn cob.The first pKa of organic acids,influenced by the number and type of the side group and distance between two carboxylic groups,played a crucial role in the pretreatment effect.Citric acid was found to have better pretreatment performance than other tested dicarboxylic acids.Under the condition of 30 mM,160°C and 60 min,the level of xylose reached 22.64 g/L in pretreatment liquid,and the pretreated corn cob demonstrated the high enhancement of enzymatic hydrolysis up to 93.4%and the ethanol yield was 73.6%.展开更多
基金by the National Key Research and Development Program of China(2018YFA0902200)the National Natural Science Foundation of China(51561145015)the Major Program of the Natural Science Foundation of Jiangsu Higher Education of China(16KJA220004).
文摘As an important agricultural waste,corn cob is one of the most abundant lignocellulosic biomass.In this work,dilute acid pretreatment using seven different organic acids were compared for compositional analysis of corn cob.The first pKa of organic acids,influenced by the number and type of the side group and distance between two carboxylic groups,played a crucial role in the pretreatment effect.Citric acid was found to have better pretreatment performance than other tested dicarboxylic acids.Under the condition of 30 mM,160°C and 60 min,the level of xylose reached 22.64 g/L in pretreatment liquid,and the pretreated corn cob demonstrated the high enhancement of enzymatic hydrolysis up to 93.4%and the ethanol yield was 73.6%.
