title: Xylose production from corn stover biomass by steam explosion combined with enzymatic digestibility.
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.
authors.affiliation: State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Zhi-Hua
authors.initials: ZH
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. Electronic address: hzchen@ipe.ac.cn.
authors.forename: Hong-Zhang
authors.initials: HZ
authors.lastname: Chen
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002480:Cellulase / Q000378:metabolism*; D005662:Furaldehyde / Q000031:analogs & derivatives / Q000032:analysis; D005936:Glucans / Q000302:isolation & purification; D005947:Glucose / Q000096:biosynthesis; D007700:Kinetics; D008031:Lignin / Q000032:analysis / Q000302:isolation & purification; D011312:Pressure; D013227:Steam; D013696:Temperature; D014866:Waste Products / Q000032:analysis*; D014867:Water / Q000737:chemistry; D014990:Xylans / Q000302:isolation & purification; D014994:Xylose / Q000096:biosynthesis*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D005936:Glucans; D013227:Steam; D014866:Waste Products; D014990:Xylans; D014867:Water; C008046:5-hydroxymethylfurfural; D008031:Lignin; D014994:Xylose; D005662:Furaldehyde; D002480:Cellulase; D005947:Glucose
keywords: Degradation products; Enzymatic digestibility; Steam explosion; Water holding capacity; Xylose yield