title: Optimization of fermentable sugar production from rape straw through hydrothermal acid pretreatment.
abstract: Operational conditions for the hydrolysis of rape straw were optimized using the combined severity index (CS), which combines the effects of time, temperature, and acid concentration into a single parameter. The sugar recovery yield was 77.8% of the theoretical yield at a value of CS=1.3. A maximum concentration of xylose of 7.22 g/L was obtained when the straw was treated for 10 min at a low reaction temperature (150 °C) and high acid concentration (pH 1.17). The pentose-rich hydrolyzate exhibited a low concentration of fermentation-inhibiting compounds. The concept of CS can be conveniently and effectively applied for optimization of pretreatments.
authors.affiliation: Department of Applied Chemical Engineering, Dankook University, Cheonan, Chungnam 330-714, Republic of Korea.
authors.forename: Tae Su
authors.initials: TS
authors.lastname: Jeong
authors.forename: Kyeong Keun
authors.initials: KK
authors.lastname: Oh
mesh_terms: D000143:Acids; D029741:Brassica rapa / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D010429:Pentoses / Q000032:analysis / Q000302:isolation & purification*; D018547:Plant Stems / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors
chemical_list: D000143:Acids; D010429:Pentoses