Xylose production from corn stover biomass by steam explosion combined with enzymatic digestibility. (October 2015)

• Record Type: Journal Article
• Authors: Liu, Zhi-Hua; Chen, Hong-Zhang
• Is Part Of: Bioresource technology. Volume 193(2015)
• Page Start: 345
• Page End: 356
• Publication Date: 2015-10
• Subjects: Steam explosion -- Enzymatic digestibility -- Xylose yield -- Degradation products -- Water holding capacity; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.06.114
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: A novel conversion process of steam explosion and digestibility was exploited. Steam explosion increased the recovery of sugars and reduced the formation of DPs. Periodic peristalsis enhanced the digestibility of SECS at high solid loading. The highest yield of xylose and total sugar reached to 62.8% and 72.3%, respectively. Abstract: A novel conversion process using steam explosion combined with enzymatic digestibility was exploited to increase sugar yield. Results showed that glucan and xylan recovery decreased with the increase of holding temperature and residence time in SE, respectively, while glucan and xylan conversion exhibited an opposite trend. The optimal conditions of steam explosion were 160 °C and 48 min, under which glucan and xylan recovery was 93.4% and 71.6%, respectively. Glucan and xylan conversion at 18% solid loading by periodic peristalsis increased by 3.4–5.8% and 4.5–6.2%, respectively, compared with that by water baths shaker. In the whole process, glucose, xylose and total sugar yield reached to 77.3%, 62.8% and 72.3%, respectively. The yield of hydroxymethyl furfural, furfural and lignin-derived products was 6.3 × 10 −2, 7.5 × 10 −2 and less than 3.7 × 10 −2 g/100 g feedstock, respectively. This novel conversion process increased sugar recovery, reduced degradation products formation, improved digestibility efficiency, and hence increased sugar yield.