巯基乙酸
玉米秸秆
半纤维素
水解
化学
木质素
纤维素
干草
木聚糖
酶水解
食品科学
核化学
有机化学
农学
生物
作物
作者
Zhimin Wang,Hang Yuan,Fengjiao Zhang,Haiyang Xie,Guangce Jiang,Dongcan Lv,Hongsen Zhang,Su Shiung Lam,Andong Song
标识
DOI:10.1016/j.jclepro.2022.132804
摘要
Fenton pretreatment is known as a green and mild approach, but it is usually time-consuming and inefficient in promoting lignocellulose enzymatic hydrolysis. Here we demonstrate that thioglycolic acid (TA) significantly accelerates Fenton pretreatment (FP) of corn stover (CS) and improves enzymatic hydrolysis of cellulose and xylan. The results showed that the reducing sugar yield of CS reached 77.0% with TA-assisted FP in only 16 h, while it was only 34.1% and 38.0% with FP alone in 16 h and 72 h, respectively. Via examination of the changes of composition, physical and chemical characteristics of CS before and after pretreatment, it was found that TA-assisted FP greatly improved the removal of hemicellulose and lignin, resulting in increment of the pore volume, pore size and cellulose exposure of CS substrate, which together promoted the enzymatic saccharification of CS.
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