title: Thermo-chemical pretreatment and enzymatic hydrolysis for enhancing saccharification of catalpa sawdust.
abstract: To improve the reducing sugar production from catalpa sawdust, thermo-chemical pretreatments were examined and the chemicals used including NaOH, Ca(OH)2, H2SO4, and HCl. The hemicellulose solubilization and cellulose crystallinity index (CrI) were significantly increased after thermo-alkaline pretreatments, and the thermo-Ca(OH)2 pretreatment showed the best improvement for reducing sugar production comparing to other three pretreatments. The conditions of thermo-Ca(OH)2 pretreatment and enzymatic hydrolysis were systematically optimized. Under the optimal conditions, the reducing sugar yield increased by 1185.7% comparing to the control. This study indicates that the thermo-Ca(OH)2 pretreatment is ideal for the saccharification of catalpa sawdust and that catalpa sawdust is a promising raw material for biofuel.
authors.affiliation: Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China.
authors.forename: Shuguang
authors.initials: S
authors.lastname: Jin
authors.affiliation: School of Environment and Resource, Renmin University of China, Beijing 100872, China.
authors.forename: Guangming
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China. Electronic address: panyue_zhang@bjfu.edu.cn.
authors.forename: Panyue
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Li
authors.affiliation: Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China.
authors.forename: Shiyang
authors.initials: S
authors.lastname: Fan
authors.affiliation: Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Li
mesh_terms: D029402:Bignoniaceae; D056804:Biofuels; D002126:Calcium Hydroxide; D002241:Carbohydrates / Q000032:analysis*; D002482:Cellulose; D004950:Esterases; D006851:Hydrochloric Acid; D006868:Hydrolysis; D011134:Polysaccharides; D012972:Sodium Hydroxide; D013464:Sulfuric Acids; D014934:Wood / Q000737:chemistry*
chemical_list: D056804:Biofuels; D002241:Carbohydrates; D011134:Polysaccharides; D013464:Sulfuric Acids; D012972:Sodium Hydroxide; C007916:hemicellulose; D002482:Cellulose; D004950:Esterases; C033158:sulfuric acid; D002126:Calcium Hydroxide; D006851:Hydrochloric Acid
keywords: Ca(OH)(2); Catalpa sawdust; Enzymatic hydrolysis; Lignocellulosic biomass; Thermo-chemical pretreatment