title: Evaluation of correlation between glucan conversion and degree of delignification depending on pretreatment strategies using Jabon Merah.
abstract: The main purpose of this study was to investigate the glucan conversion rate after enzymatic hydrolysis depending on the treatment methods and conditions with changes in the chemical composition of treated solid fraction of Jabon Merah. The glucan conversion rate (17.4%) was not significantly improved after liquid hot water treatment (1st step) even though most of the hemicellulose was dissolved into liquid hydrolysate. Subsequently, dilute acid, organosolv, and peracetic acid treatment (2nd step) was conducted under various conditions to enhance glucan conversion. Among the 2nd step treatment, the glucan conversion rate of organosolv (max. 46.0%) and peracetic acid treatment (max. 65.9%) was increased remarkably through decomposition of acid-insoluble lignin (AIL). Finally, the glucan conversion rate and AIL content were highly correlated, which was revealed by the R-squared value (0.84), but inhibitory factors including cellulose crystallinity must be considered for advanced glucan conversion from highly recalcitrant biomasses, such as Jabon Merah.
authors.affiliation: Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Soo-Kyeong
authors.initials: SK
authors.lastname: Jang
authors.affiliation: Division of Wood Chemistry & Microbiology, Department of Forest Products, National Institute of Forest Science, Seoul 02455, Republic of Korea.
authors.forename: Hanseob
authors.initials: H
authors.lastname: Jeong
authors.affiliation: Center for Bio-based Chemistry, Convergent Chemistry Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.
authors.forename: Ho-Yong
authors.initials: HY
authors.lastname: Kim
authors.affiliation: Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: June-Ho
authors.initials: JH
authors.lastname: Choi
authors.affiliation: Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Jong-Hwa
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Intelligent & Sustainable Materials R&D Group, Research Institute of Sustainable Manufacturing System, Korea Institute of Industrial Technology, Cheonan 31056, Republic of Korea.
authors.forename: Bon-Wook
authors.initials: BW
authors.lastname: Koo
authors.affiliation: Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea; Institute of Green-Bio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea; Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea. Electronic address: cingyu@snu.ac.kr.
authors.forename: In-Gyu
authors.initials: IG
authors.lastname: Choi
mesh_terms: D018533:Biomass; D002482:Cellulose / Q000737:chemistry; D005936:Glucans / Q000737:chemistry*; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*
chemical_list: D005936:Glucans; D002482:Cellulose; D008031:Lignin
keywords: Biomass recalcitrance; Delignification; Glucan conversion; Jabon Merah; Pretreatment