title: Fractionation of rapeseed straw by hydrothermal/dilute acid pretreatment combined with alkali post-treatment for improving its enzymatic hydrolysis.
abstract: The aim of the research was to evaluate the effect of combined treatments on fermentable sugar production from rapeseed straw. An optimum condition was found to be the combination of hydrothermal pretreatment at 180°C for 45min and post-treatment by 2% NaOH at 100°C for 2h, which was based on the quantity of monosaccharides released during enzymatic hydrolysis. As compared with the raw material without treatment, the combination of hydrothermal pretreatment and alkali post-treatment resulted in a significant increase of the saccharification rate by 5.9times. This process potentially turned rapeseed straw into value added products in accordance with the biorefinery concept.
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, China.
authors.forename: Bo-Yang
authors.initials: BY
authors.lastname: Chen
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, China.
authors.forename: Bao-Cheng
authors.initials: BC
authors.lastname: Zhao
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, China.
authors.forename: Ming-Fei
authors.initials: MF
authors.lastname: Li
authors.affiliation: The BioComposites Centre, Bangor University, Bangor, UK.
authors.forename: Qiu-Yun
authors.initials: QY
authors.lastname: Liu
authors.affiliation: Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, China. Electronic address: rcsun3@bjfu.edu.cn.
authors.forename: Run-Cang
authors.initials: RC
authors.lastname: Sun
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D029741:Brassica rapa / Q000737:chemistry*; D044602:Cellulases / Q000737:chemistry / Q000378:metabolism; D002482:Cellulose / Q000737:chemistry / Q000302:isolation & purification; D005591:Chemical Fractionation / Q000379:methods*; D005947:Glucose / Q000737:chemistry; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry / Q000302:isolation & purification; D018520:Plant Shoots / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry / Q000302:isolation & purification; D012972:Sodium Hydroxide / Q000737:chemistry; D013696:Temperature; D001617:beta-Glucosidase / Q000737:chemistry / Q000378:metabolism
chemical_list: D011134:Polysaccharides; D012972:Sodium Hydroxide; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin; D044602:Cellulases; D001617:beta-Glucosidase; D005947:Glucose
keywords: Alkali fractionation; Enzymatic hydrolysis; Pretreatment; Rapeseed straw