Preparation of levoglucosan by pyrolysis of cellulose and its citric acid fermentation

被引：103

作者：

Zhuang, XL ^{[1
]}

Zhang, HX ^{[1
]}

Yang, JZ ^{[1
]}

Qi, HY ^{[1
]}

机构：

[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2001年 / 79卷 / 01期

关键词：

levoglucosan; citric acid; response surface method; pyrolysis; Aspergillus niger;

D O I：

10.1016/S0960-8524(01)00023-2

中图分类号：

S2 [农业工程];

学科分类号：

0828 [农业工程];

摘要：

Levoglucosan (LG), 1,6-anhydro-beta -D-glucopyranose. was produced by pyrolysis of cellulose. A response surface method was used to optimize the reaction parameters: X-1, temperature; X-2, time required for heating cellulose from room temperature to the designed pyrolysis temperature; and X-3. vacuum, and a Box-Behnken design was employed for this purpose. The optimal temperature and time were found to be 388 degreesC and 26.2 min by fixing the vacuum at 1 mm HE. The levoglucosan prepared was fermented to citric acid by Aspergillus niger CBX-309, which was a mutant derived by gamma -ray mutagenesis of the parent strain CBX-2. The mutant could produce increasing citric acid with increasing LG purity and had a citric acid yield of 87.5% when using purified levoglucosan as the sole carbon source in a 5 day fermentation period. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：63 / 66

页数：4

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