Starch saccharification and fermentation of uncooked sweet potato roots for fuel ethanol production

被引：30

作者：

Zhang, Peng ^{[1
,2
]}

Chen, Caifa ^{[1
]}

Shen, Yanhu ^{[1
]}

Ding, Tielin ^{[1
]}

Ma, Daifu ^{[3
]}

Hua, Zichun ^{[2
]}

Sun, Dongxu ^{[1
]}

机构：

[1] Jiangsu Normal Univ, Sch Life Sci, Xuzhou 221116, Jiangsu, Peoples R China

[2] Macau Univ Sci & Technol, State Key Lab Qual Res Chinese Med, Macao, Peoples R China

[3] CAAS, Xuzhou Acad Agr Sci, Sweet Potato Res Inst, Xuzhou 221121, Jiangsu, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 128卷

关键词：

Aspergillus niger; Zymomonas mobilis; Fuel ethanol fermentation; Sweet potato; Raw starch; SACCHAROMYCES-CEREVISIAE; GLUCOAMYLASE; IMPROVEMENT;

D O I：

10.1016/j.biortech.2012.10.166

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An energy-saving ethanol fermentation technology was developed using uncooked fresh sweet potato as raw material. A mutant strain of Aspergillus niger isolated from mildewed sweet potato was used to produce abundant raw starch saccharification enzymes for treating uncooked sweet potato storage roots. The viscosity of the fermentation paste of uncooked sweet potato roots was lower than that of the cooked roots. The ethanol fermentation was carried out by Zymomonas mobilis, and 14.4 g of ethanol (87.2% of the theoretical yield) was produced from 100 g of fresh sweet potato storage roots. Based on this method, an energy-saving, high efficient and environment-friendly technology can be developed for large-scale production of fuel ethanol from sweet potato roots. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：835 / 838

页数：4

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