The potential of tailoring the conditions of steam explosion to produce xylo-oligosaccharides from sugarcane bagasse

• Autor(a) principal: Carvalho, Ana Flavia Azevedo [UNESP]
• Data de Publicação: 2018
• Outros Autores: Marcondes, Wilian Fioreli, de Oliva Neto, Pedro [UNESP], Pastore, Glaucia Maria, Saddler, Jack N., Arantes, Valdeir
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.biortech.2017.11.041; http://hdl.handle.net/11449/170428
• topic: Steam explosion; Sugarcane bagasse; Xylan; Xylo-oligosaccharides

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 °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.