Manufacture of xylose-based fermentation media from corncobs by posthydrolysis of autohydrolysis liquors

被引：41

作者：

Garrote, G ^{[1
]}

Domínguez, H ^{[1
]}

Parajó, JC ^{[1
]}

机构：

[1] Univ Vigo, Dept Chem Engn, Orense 32004, Spain

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 2001年 / 95卷 / 03期

关键词：

autohydrolysis; corncob; fermentation media; furfural; oligosaccharides; posthydrolysis; xylose;

D O I：

10.1385/ABAB:95:3:195

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Milled corncob samples were mixed with water and heated to obtain a liquid phase containing oligosaccharides, sugars, and acetic acid as main reaction products (autohydrolysis reaction). To hydrolyze the sugar oligomers to the correspondent monomers, sulfuric acid was added to the autohydrolysis. liquors to reach 0.5-2 wt% of solution, and the reaction media were heated at 101.5-135 degreesC. With this operational procedure, sugar solutions suitable as fermentation media (containing xylose as the major component) were obtained. The kinetics of the posthydrolysis step was characterized on the basis of experimental data concerning the time courses of the concentrations of xylooligosaccharides, xylose, furfural, and acetic acid. The concentrations of other reaction byproducts (glucose or arabinose) were also measured.

引用

页码：195 / 207

页数：13

共 31 条

[1] Fractionation of sugar cane with hot, compressed, liquid water [J].