文献类型：期刊文献

英文题名：Fermentative production of high titer gluconic and xylonic acids from corn stover feedstock by Gluconobacter oxydans and techno-economic analysis

作者：Zhang, Hongsen[1];Liu, Gang[1];Zhang, Jian[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：2016

卷号：219

起止页码：123

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20163102673444);WOS:【SCI-EXPANDED(收录号:WOS:000384711900016)】；

基金：This research was supported by the National High-Tech Program of China (2014AA021901), the Natural Science Foundation of China (21306048), and the Fundamental Research Funds for the Central Universities of China (WF1514325).

语种：英文

外文关键词：Lignocellulose; Gluconate; Xylonate; Gluconobacter oxydans DSM 2003; Aspen Plus modeling

摘要：High titer gluconic acid and xylonic acid were simultaneously fermented by Gluconobacter oxydans DSM 2003 using corn stover feedstock after dry dilute sulfuric acid pretreatment, biodetoxification and high solids content hydrolysis. Maximum sodium gluconate and xylonate were produced at the titer of 132.46 g/L and 38.86 g/L with the overall yield of 97.12% from glucose and 90.02% from xylose, respectively. The drawbacks of filamentous fungus Aspergillus niger including weak inhibitor tolerance, large pellet formation and no xylose utilization were solved by using the bacterium strain G. oxydans. The obtained sodium gluconate/xylonate product was highly competitive as cement retarder additive to the commercial product from corn feedstock. The techno-economic analysis (TEA) based on the Aspen Plus modeling was performed and the minimum sodium gluconate/xylonate product selling price (MGSP) was calculated as $0.404/kg. This study provided a practical and economic competitive process of lignocellulose utilization for production of value-added biobased chemicals. (C) 2016 Elsevier Ltd. All rights reserved.