title: Evaluating the effect of wood ultrastructural changes from mechanical treatment on kinetics of monomeric sugars and chemicals production in acid bisulfite treatment.
abstract: Currently, various chemical-mechanical treatments were widely used in biofuel production to achieve high total sugar yields. However, the interaction between two treatments was scarcely investigated. In this study, we employed a ball milling process to create ultrastructural changes for Douglas-fir (Pseudotsuga menziesii) micronized wood powders. The 0, 30, and 60min ball milled wood powders resulted in a crystallinity index of 0.41, 0.21, and 0.10 respectively. It was found that the ultrastructural changes accelerate monomeric sugars production without influencing the yield of sugar degradation products. The optimal acid bisulfite treatment time was substantially decreased from 120min to 40min as the cellulose crystallinity decreased. Meanwhile, total sugar yield increased from 65% to 92% and had a linear relation with a decrease of the cellulose crystallinity.
authors.affiliation: Composite Materials & Engineering Center, Washington State University, Pullman, WA 99164-1806, United States. Electronic address: yalan.liu@wsu.edu.
authors.forename: Yalan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: United States Department of Agriculture, Forest Service, Forest Products Laboratory, 35 Flagstaff Road, Orono, ME 04469-5793, United States. Electronic address: jinwuwang@fs.fed.us.
authors.forename: Jinwu
authors.initials: J
authors.lastname: Wang
authors.affiliation: Composite Materials & Engineering Center, Washington State University, Pullman, WA 99164-1806, United States. Electronic address: wolcott@wsu.edu.
authors.forename: Michael P
authors.initials: MP
authors.lastname: Wolcott
mesh_terms: D056804:Biofuels; D050260:Carbohydrate Metabolism; D002482:Cellulose / Q000737:chemistry; D003460:Crystallization; D005662:Furaldehyde / Q000737:chemistry / Q000302:isolation & purification; D007700:Kinetics; D009005:Monosaccharides / Q000737:chemistry* / Q000378:metabolism; D010316:Particle Size; D028224:Pseudotsuga / Q000737:chemistry* / Q000648:ultrastructure; D017550:Spectroscopy, Fourier Transform Infrared; D013447:Sulfites / Q000737:chemistry*; D014934:Wood / Q000737:chemistry* / Q000648:ultrastructure*; D014961:X-Ray Diffraction
chemical_list: D056804:Biofuels; D009005:Monosaccharides; D013447:Sulfites; D002482:Cellulose; D005662:Furaldehyde; C042345:hydrogen sulfite
keywords: Crystallinity; Enzymatic hydrolysis; Kinetics; Lignosulfonates; Monomeric sugar; Sugar degradation