期刊
BIOFUELS-UK
卷 6, 期 3-4, 页码 147-155出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17597269.2015.1065589
关键词
xylooligosaccharides; acidic hydrolysis; alkaline hydrolysis; enzyme saccharification; xylan extraction
资金
- European Commission FP 6 [TREN/ 06/FP6EN/S07.64183/019884]
- Biotechnology and Biological Sciences Research Council (BBSRC), UK
- WEFO
Efficient utilization of lignocellulosic biomass requires pretreatment in order to liberate cellulose from lignin and disrupt its recalcitrant crystalline structure before effective enzymatic hydrolysis can take place. Three different pretreatment methods (pressure cooking with dilute alkali and dilute acid as well as alkaline extraction) to recover the xylooligosaccharides fraction from five different grass silage samples, whole crop rye silage and maize silage were compared. The predominant end products released were xylobiose, xylotetraose, xylopentaose and xylohexaose whereas the xylooligosaccharides release pattern differed with the substrate. Maximum values of xylooligosaccharides was found for grass silage 17.26 g/L, whole crop rye silage 3.06 g/L and for maize silage 5.77 g/L. Results reveal the production of high value by-products from agricultural biomass. Advantages of the green-biorefinery concept include a resulting liquid fraction after pretreatment with very low contents of inhibitors such as furfural, hydroxymethylfurfural (HMF) and phenolic compounds.
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