文献类型：期刊文献

英文题名：Reframing biorefinery processing chain of corn fiber for cellulosic ethanol production

作者：Zhang, Bin[1];Zhan, Baorui[1];Bao, Jie[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：170

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20212710596988);WOS:【SCI-EXPANDED(收录号:WOS:000689548600010)】；

基金：This research was supported by the National Natural Science Foundation of China (21978083, 31961133006).

语种：英文

外文关键词：Corn fiber; Cellulosic ethanol; Acetic acid; Biorefinery chain; Pretreatment; Biodetoxification

摘要：Corn fiber is a byproduct of wet milling of corn grains with high hemicellulose content. Hemicellulose is only partially hydrolyzed in acid pretreatment and the complete hydrolysis occurs in the subsequent enzymatic hydrolysis. In the regular biorefinery chain of lignocellulose, the detoxification of toxic inhibitors is conducted immediately after pretreatment. When this process arrangement applies to corn fiber, acetic acid is accumulated to high level because of acetyl group release from residual hemicellulose. This study re-framed the biorefinery chain by conducting enzymatic hydrolysis before biodetoxification to completely release acetic acid from hemicellulose in corn fiber. Then the biodetoxification was followed immediately to degrade acetic acid, furfural and 5-hydroxymethylfurfural with the minimum loss of glucose and xylose. The improved ethanol production (70.2 g/L, or 8.9 % by v/v) was obtained by the re-framed chain of corn fiber biorefining. This study provided a practical approach for utilization of corn fiber for biofuel production.