SO2-catalysed steam pretreatment of quinoa stalks

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• 作者：Cristhian Carrasco ; Diego Cuno ; Karin Carlqvist ; Mats Galbe and Gunnar Lid&#233 ; n
• 关键词：xylose ; quinoa stalks ; steam pretreatment ; SO2
• 刊名：Journal of Chemical Technology & Biotechnology
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：90
• 期：1
• 页码：64-71
• 全文大小：737K
• ISSN：1097-4660

文摘

Quinoa is a pseudo-cereal grown predominantly in South America. The quinoa stalks are lignocellulosic residues, which have a limited use today. The objective of the current study was to assess the potential of this material as a source of monosaccharides for fermentation purposes by means of steam pretreatment giving sugars from the hemicellulose part, and enzymatic hydrolysis of the solid fraction obtained. SO<sub>2sub> catalysed steam pretreatment was carried out with a holding time of 5&thinsp;min at temperatures between 180 and 220°C. The pretreatment was carried out at two different scales, a small reactor of size 0.5&thinsp;L and a somewhat larger reactor of size 10&thinsp;L, to allow comparison of scale effects in the pretreatment.