Journal
BIORESOURCE TECHNOLOGY
Volume 250, Issue -, Pages 221-229Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.11.041
Keywords
Xylo-oligosaccharides; Steam explosion; Sugarcane bagasse; Xylan
Funding
- Brazilian National Council for Scientific and Technological Development (CNPq) (Brazil) [308715/2015-2, 429895/2016-0]
- CNPq
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
- University of British Columbia (Canada)
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In this study, the potential of the steam explosion (SE) method to produce high levels XOS from sugarcane bagasse, a xylan-rich hemicellulosic feedstock, was assessed. The effect of different operating conditions on XOS production yield and selectivity were investigated using a mini-pilot scale SE unit. The results show that even under a non-optimized condition (190 degrees C, 5 min and 0.5% H2SO4 as catalyst), SE led to about 40% xylan recovery as XOS, which was comparable to the well-known, multi-step, enzymatic production of XOS from alkaline-extracted xylan, and other commonly employed chemical methods. In addition, the XOS-rich hydrolysate from SE constituted of greater diversity in the degree of polymerization, which has been shown to be desirable for prebiotic application.
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