title: Acid-catalyzed hydrothermal severity on the fractionation of agricultural residues for xylose-rich hydrolyzates.
abstract: The objective of this work was to investigate the feasibility of acid-catalyzed hydrothermal fractionation for maximum solubilization of the hemicellulosic portion of three agricultural residues. The fractionation conditions converted into combined severity factor (CS) in the range of 1.2-2.9. The highest hemicellulose yield of 87.88% was achieved when barley straw was fractionated at a CS of 2.19. However, the maximum glucose release of 15.29% was achieved for the case of rice straw. The maximum productions of various by-products were observed with the fractionation of rape straw: 0.88 g/L of 5-hydroxymethylfurfural (5-HMF), 2.16 g/L of furfural, 0.44 g/L of levulinic acid, 1.59 g/L of formic acid, and 3.06 g/L of acetic acid. The highest selectivities, a criterion for evaluating the fractionation of 21.55 for fractionated solid and 7.48 for liquid hydrolyzate were obtained from barley straw.
authors: Department of Applied Chemical Engineering, Dankook University, Cheonan, Chungnam 330-714, Republic of Korea.
authors: Ji Ye
authors: JY
authors: Lee
authors: Hyun Jin
authors: HJ
authors: Ryu
authors: Kyeong Keun
authors: KK
authors: Oh
mesh_terms: D019342:Acetic Acid / Q000032:analysis; D000383:Agriculture; D029741:Brassica rapa / Q000737:chemistry*; D005591:Chemical Fractionation / Q000379:methods*; D005561:Formates / Q000032:analysis; D005662:Furaldehyde / Q000031:analogs & derivatives / Q000032:analysis; D005947:Glucose / Q000032:analysis / Q000302:isolation & purification*; D001467:Hordeum / Q000737:chemistry*; D006868:Hydrolysis; D007982:Levulinic Acids / Q000032:analysis; D012275:Oryza / Q000737:chemistry*; D011134:Polysaccharides / Q000032:analysis / Q000302:isolation & purification*; D013045:Species Specificity; D014866:Waste Products / Q000032:analysis*
chemical_list: D005561:Formates; D007982:Levulinic Acids; D011134:Polysaccharides; D014866:Waste Products; C030544:formic acid; C008046:5-hydroxymethylfurfural; C007916:hemicellulose; D005662:Furaldehyde; D005947:Glucose; D019342:Acetic Acid; C032246:levulinic acid