Enzymatic production of xylooligosaccharides from alkali solubilized xylan of natural grass (Sehima nervosum)

被引：95
作者：
Samanta, A. K. [1 ]
Jayapal, Natasha [1 ]
Kolte, A. P. [1 ]
Senani, S. [1 ]
Sridhar, Manpal [1 ]
Suresh, K. P. [1 ]
Sampath, K. T. [1 ]
机构：
[1] Natl Inst Anim Nutr & Physiol, Bangalore 560030, Karnataka, India
来源：
BIORESOURCE TECHNOLOGY | 2012年 / 112卷
关键词：
Sehima nervosum grass; Xylan; Xylooligosaccharide; Lignocellulosic biomass; RSM; GRADED ETHANOL PRECIPITATION; STRUCTURAL-CHARACTERIZATION; POLYSACCHARIDES; HEMICELLULOSE; PEROXIDE; FIBER;
D O I：
10.1016/j.biortech.2012.02.036
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, a process for producing XOS from Sehima nervosum grass was developed. The grass contains 28.1% hemicellulose. NaOH and steam application yielded 98% of original xylan in contrast to 85% by KOH application. Hydrolysis of xylan with commercial xylanase caused breakdown into XOS comprising of xylobiose, xylotriose along with xylose. Response surface model (RSM) revealed highest xylobiose yield (11 g/100 g xylan) at pH 5.03, temperature 45.19 degrees C, reaction time 10.11 h with enzyme dose 17.41 U. Similarly for maximizing xylotriose yield, ideal hydrolysis conditions were pH 5.11, temperature 40.33 degrees C, reaction time 16.55 h with enzyme dose 13.20 U. A two step process encompassing xylan fractionation and enzymatic hydrolysis enabled XOS production from the S. nervosum grass. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：199 / 205
页数：7
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