High titer gluconic acid fermentation by Aspergillus niger from dry dilute acid pretreated corn stover without detoxification

被引：54
|
作者：
Zhang, Hongsen [1 ]
Zhang, Jian [1 ]
Bao, Jie [1 ]
机构：
[1] E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2016年 / 203卷
关键词：
Gluconic acid; Lignocellulose; Aspergillus niger; Inhibitor tolerance; Cement additive; BIOCONVERSION; INHIBITION; OXIDASE; CEMENT; GRAPE;
D O I：
10.1016/j.biortech.2015.12.042
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This study reported a high titer gluconic acid fermentation using dry dilute acid pretreated corn stover (DDAP) hydrolysate without detoxification. The selected fermenting strain Aspergillus niger SIIM M276 was capable of inhibitor degradation thus no detoxification on pretreated corn stover was required. Parameters of gluconic acid fermentation in corn stover hydrolysate were optimized in flasks and in fermentors to achieve 76.67 g/L gluconic acid with overall yield of 94.91%. The sodium gluconate obtained from corn stover was used as additive for extending setting time of cement mortar and similar function was obtained with starch based sodium gluconate. This study provided the first high titer gluconic acid production from lignocellulosic feedstock with potential of industrial applications. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：211 / 219
页数：9
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