<Original>Microwave Irradiation of Lignocellulosic Materials : VIII. Microwave Irradiation of the Neutral Fraction (C-I-M) of Pine Bjorkman LCC
スポンサーリンク
概要
- 論文の詳細を見る
この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。Effect of microwave irradiation on the partially acetylated galactoglucomannan bearing a small amount of lignin (C-I-M) isolated from pine Bjorkman LCC was investigated. When the native C-I-M was heated above 180℃ by microwave irradiation in the presence of water, its carbohydrate portion was hydrolyzed into oligosaccharides having d.p. of 2-5 and monosaccharides. The degree of depolymerization of carbohydrates strongly depended upon the heating temperature and did not reach a maximum below 237℃, at which the reducing sugar content attained to 45.7%. The lignin molecules precipitated during microwave irradiation and a substancial amount of their, β-0-4 linkages were splitted. The lignin-carbohydrate bondings were also splitted at the heating temperature above 230℃. The hydrolysis of the carbohydrate portion of C-I-M was found to be remarkably enhanced by addition of 0.5% acetic acid during microwave irradiation. In this case, the reducing sugar production showed a maximum (74.2%) at about 210℃. Acetic acid was an excellent reagent for enhancement of the extent of depolymerization of galactoglucomannan in C-I-M.
- 京都大学の論文
- 1986-02-28
著者
-
KOSHIJIMA Tetsuo
Research Section of Wood Chemistry, WOOD RESEARCH INSTITUTE, KYOTO UNIVERSITY
-
Azuma Jun-ichi
Research Section Of Wood Chemistry Wood Research Institute Kyoto University
-
Koshijima Tetsuo
Research Section Of Wood Chemistry Wood Research Institute Kyoto University
-
KATAYAMA Toshikazu
Research Section of Wood Chemistry, WOOD RESEARCH INSTITUTE, KYOTO UNIVERSITY
-
Katayama T
Electrotechnical Laboratory
-
Azuma Junichi
Research Section of Wood Chemistry, Wood Research Institute, Kyoto University
-
Koshijima Toshikazu
Research Section of Wood Chemistry, WOOD RESEARCH INSTITUTE, KYOTO UNIVERSITY
-
Katayama Tetsuo
Research Section of Wood Chemistry, WOOD RESEARCH INSTITUTE, KYOTO UNIVERSITY
関連論文
- Microwave-Irradiation of Lignocellulosic Materials X : Conversion of Microwave-Irradiated Agricultural Wastes into Ethanol
- Studies on Hemicelluloses in Tension Wood : I. Chemical Composition of Tension, Opposite and Side Woods of Japanese Beech (Fagus crenata Blume)
- Effect of Reduction on Superconductivity and Electronic State of Nd-Ce-Cu-O System
- Mossbauer and Magnetization Study of YBa_2(Cu_Fe_x)_3O_
- Enhancement of Enzymatic Susceptibility of Lignocellulosic Wastes by Microwave Irradiation
- Enzymatic Saccharification of Woody Plants : I. Effects of Expanded Softening and Ball-milling on Enzymatic Saccharification
- Studies on Digestive System of Termites : I. Digestion of Carbohydrates by Termite Coptotermes formosanus SHIRAKI
- Effects of Microwave Irradiation on Enzymatic Susceptibility of Crystalline Cellulose : Microwave Irradiation of Lignocellulosic Materials (V).
- Microwave Irradiation of Lignocellulosic Materials : IV. Enhancement of Enzymatic Susceptibility of Microwave-irradiated Softwoods
- Magnetic and Structural Properties of FePt Thin Film Prepared by Rapid Thermal Annealing
- Enzymatic Saccharification of Woody Plants : II. Synergistic Effects on Enzymatic Saccharification
- Studies on Digestive System of Termites : II. Properties of Carbohydrolases of Termite Coptotermes formosanus SHIRAKI
- Microwave Irradiation of Lignocellulosic Materials : VIII. Microwave Irradiation of the Neutral Fraction (C-I-M) of Pine Bjorkman LCC
- Studies on Hemicelluloses in Tension Wood : II. Structural Studies on Xylans from Tension, Opposite and Side Woods of Japanese Beech (Fagus crenata Blume)
- Studies on the Autecology of Lyctus brunneus (STEPHENS) (Coleoptera, Lyctidae) : VII. Chemical Investigations of the Nutrient Composition of Foods
- Collective Spin Waves in an Ultrathin Fe Wedge : A Brillouin Scattering Study
- Brillouin Scattering from Spin Waves in an Ultrathin Fe Wedge
- Application of APT Pulse Sequence to Facilitate ^C-NMR Analysis of Lignin
- Periodate Oxidation of Mercerized Cellulose and Regenerated Cellulose
- Binding-site Analysis of the Ether Linkages between Lignin and Hemicelluloses in Lignin-Carbohydrate Complexes by DDQ-Oxidation(Analytical Chemistry)
- Properties of Enzyme-Unhydrolyzable Residue of Lignin-Carbohydrate Complexes Isolated from Beech Wood