title: Short-time alkaline peroxide pretreatment for rapid pulping and efficient enzymatic hydrolysis of rice straw.
abstract: To improve utilization of agricultural residues in biorefineries, the effects of alkaline peroxide (AP) pretreatment on thermal degradation and enzymatic digestibility of rice straw were investigated. A high-cellulose (>70%) pulp with a width of a few micrometers was obtained by rapid (10min) treatment with AP, without prior heating or other treatment. Moreover, enzymatic hydrolysis of the pulp produced a high glucose yield (approximately 80%). Microfibril networks were exposed, and many nano-scale pores that are easily penetrated by cellulases were observed on the surface of the AP-treated sample. For enzymatic hydrolysis of the pulp, increasing the dosage of cellulases was more effective for improving the glucose yield than addition of a grinding treatment. This AP treatment has the potential for on-site application because it is simple, highly efficient, and can be performed in a short time.
authors.affiliation: Paper Industry Innovation Center, Ehime University, 127 Mendori-cho, Shikokuchuo, Ehime 799-0113, Japan. Electronic address: a-hideno@agr.ehime-u.ac.jp.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Hideno
mesh_terms: D044602:Cellulases / Q000378:metabolism*; D002482:Cellulose / Q000737:chemistry*; D006868:Hydrolysis; D012275:Oryza / Q000737:chemistry*; D010545:Peroxides / Q000494:pharmacology*; D014866:Waste Products
chemical_list: D010545:Peroxides; D014866:Waste Products; D002482:Cellulose; D044602:Cellulases
keywords: Enzymatic hydrolysis; Microfibrils; Rapid pulping; Rice straw; Short-time alkaline peroxide treatment