title: Co-extraction of soluble and insoluble sugars from energy sorghum based on a hydrothermal hydrolysis process.
abstract: A process for co-extraction of soluble and insoluble sugars from energy sorghum (ES) was developed based on hydrothermal hydrolysis (HH). Two series of ES were investigated: one (N) with a high biomass yield displayed a higher recalcitrance to sugar release, whereas the second (T) series was characterized by high sugar extraction. The highest total xylose recoveries of 87.2% and 98.7% were obtained for N-11 and T-106 under hydrolysis conditions of 180°C for 50min and 180°C for 30min, respectively. Moreover, the T series displayed higher enzymatic digestibility (ED) than the N series. The high degree of branching (arabinose/xylose ratio) and acetyl groups in the hemicellulose chains of T-106 would be expected to accelerate sugar release during the HH process. In addition, negative correlations between ED and the lignin content, crystallinity index (CrI) and syringyl/guaiacyl (S/G) lignin ratio were observed. Furthermore, finding ways to overcome the thickness of the cell wall and heterogeneity of its chemical composition distribution would make cellulose more accessible to the enzyme.
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Yu
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Xuesong
authors.initials: X
authors.lastname: Tan
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Xinshu
authors.initials: X
authors.lastname: Zhuang
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academic of Sciences, Beijing 100039, China.
authors.forename: Qiong
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Wang
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: qiwei@ms.giec.ac.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Qi
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Guixiong
authors.initials: G
authors.lastname: Zhou
authors.affiliation: Bureau of Environmental Protection of Shuangtaizi District, Panjin 124000, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Luo
authors.affiliation: Guangdong Key Laboratory of New and Renewable Energy Research and Development, Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Collaborative Innovation Centre of Biomass Energy, Henan Province, Zhengzhou 450002, China.
authors.forename: Zhenhong
authors.initials: Z
authors.lastname: Yuan
mesh_terms: D018533:Biomass; D002241:Carbohydrates / Q000737:chemistry* / Q000302:isolation & purification*; D006868:Hydrolysis; D045868:Sorghum / Q000737:chemistry*
chemical_list: D002241:Carbohydrates
keywords: Cellulose; Energy sorghum; Hemicellulose; Hydrolysis; Lignin