title: Effects of ionic conduction on hydrothermal hydrolysis of corn starch and crystalline cellulose induced by microwave irradiation.
abstract: This study investigated the effects of ionic conduction of electrolytes under microwave field to facilitate hydrothermal hydrolysis of corn starch and crystalline cellulose (Avicel), typical model biomass substrates. Addition of 0.1M NaCl was effective to improve reducing sugar yield by 1.61-fold at unit energy (kJ) level. Although Avicel cellulose was highly recalcitrant to hydrothermal hydrolysis, addition of 0.1M MgCl2 improved reducing sugar yield by 6.94-fold at unit energy (kJ). Dielectric measurement of the mixture of corn starch/water/electrolyte revealed that ionic conduction of electrolytes were strongly involved in facilitating hydrothermal hydrolysis of polysaccharides.
authors.affiliation: Oceanography Section, Science Research Center, Kochi University, Akebono-cho 2-5-1, Kochi City, Kochi 780-8520, Japan. Electronic address: shuntaro.tsubaki@gmail.com.
authors.forename: Shuntaro
authors.initials: S
authors.lastname: Tsubaki
authors.affiliation: Oceanography Section, Science Research Center, Kochi University, Akebono-cho 2-5-1, Kochi City, Kochi 780-8520, Japan.
authors.forename: Kiriyo
authors.initials: K
authors.lastname: Oono
authors.affiliation: Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi, University, Akebono-cho 2-5-1, Kochi City, Kochi 780-8520, Japan.
authors.forename: Ayumu
authors.initials: A
authors.lastname: Onda
authors.affiliation: Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi, University, Akebono-cho 2-5-1, Kochi City, Kochi 780-8520, Japan.
authors.forename: Kazumichi
authors.initials: K
authors.lastname: Yanagisawa
authors.affiliation: Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, 611-0011, Japan.
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Mitani
authors.affiliation: The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
authors.forename: Jun-Ichi
authors.initials: JI
authors.lastname: Azuma
mesh_terms: D002482:Cellulose / Q000737:chemistry*; D003460:Crystallization; D004553:Electric Conductivity; D006358:Hot Temperature; D006868:Hydrolysis; D007477:Ions; D008872:Microwaves; D012965:Sodium Chloride / Q000737:chemistry; D013213:Starch / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D007477:Ions; D014867:Water; D012965:Sodium Chloride; D002482:Cellulose; D013213:Starch
keywords: Corn starch; Crystalline cellulose; Hydrothermal hydrolysis; Ionic conduction; Microwave heating