@article{kishimoto_kadla_chang_jameel_2003, title={The reactions of lignin model compounds with hydrogen peroxide at low pH}, volume={57}, ISSN={["1437-434X"]}, DOI={10.1515/HF.2003.008}, abstractNote={Summary}, number={1}, journal={HOLZFORSCHUNG}, author={Kishimoto, T and Kadla, JF and Chang, HM and Jameel, H}, year={2003}, pages={52–58} }
 @article{kishimoto_nakatsubo_1998, title={Non-chlorine bleaching of kraft pulp - IV. Oxidation of methyl 4-O-ethyl-beta-D-glucopyranoside with Fenton's reagent: Effects of pH and oxygen}, volume={52}, ISSN={["0018-3830"]}, DOI={10.1515/hfsg.1998.52.2.180}, abstractNote={Methyl 4-O-ethyl-β-D-glucopyranoside was used as a model for cellulose, and treated with hydrogen peroxide in the presence of Fe 2+ ions (Fenton's reagent) at room temperature for 2h, to investigate the free-radical reactions of polysaccharides during non-chlorine bleaching. Reaction products were analyzed by gas chromatography. The following products were determined: methyl β-D-glucoside, 4-O-ethyl-D-gluconic acid, gluconic acid. methyl 4-O-ethyl-glucuronoside, methyl glucuronoside, methyl 4-O-ethyl-2-keto-glucoside, methyl 4-O-ethyl-3-keto-glucoside, methyl 4-O-ethyl-6-aldehyde-glucoside. methyl 6-aldehyde-glucoside. 4-O-ethyl-glucose and glucose. The degradation of the model compound and the relative reactivities of the carbon atoms at Cl-C6 positions in the model compound were affected very much by the initial pH and oxygen content. Higher initial pH inhibited the degradation of the model compound. The reactivity at Cl, that is, glycosidic bond cleavage decreased with an increase of initial pH. Oxygen also inhibited drastically the degradation of model compound compared with that under nitrogen. The glycosidic bond cleavage was also inhibited by oxygen. The model compound was recovered unchanged in the presence of Mn 2+ or Cu 2+ instead of Fe 2+ .}, number={2}, journal={HOLZFORSCHUNG}, author={Kishimoto, T and Nakatsubo, F}, year={1998}, pages={180–184} }
 @article{kishimoto_nakatsubo_1998, title={Non-chlorine bleaching of kraft pulp - V. Participation of radical species in ozonation of methyl 4-O-ethyl-beta-D-glucopyranoside}, volume={52}, ISSN={["0018-3830"]}, DOI={10.1515/hfsg.1998.52.2.185}, abstractNote={Methyl 4-O-ethyl-β-D-glucopyranoside was treated with ozone both in anhydrous CH 2 Cl 2 and in aqueous solutions, to investigate the participation of radical species in the degradation of the polysaccharide during ozone bleaching. The reactivity of C in the model compound during ozonation was compared with that during oxidation with Fenton's reagent. It was found that ozone itself brings about glycosidic bond cleavage with a high degree of selectivity. The degradation of the model compound during ozonation in distilled water is due in part to radical species, and in part to ozone itself. The contribution of radical species to the degradation in distilled water is estimated to be about 40-70 %. Initial high pH and Fe 2+ ions enhanced the degradation of the model compound, and the contribution of radical species increased. However, the degradation of the model compound with radical species generated by Fe 2+ ions can be inhibited by adjusting to pH 2 without the removal of Fe 2+ ions. Vanillyl alcohol also enhanced the degradation of the model compound during ozonation. Radical reactions initiated by vanillyl alcohol participate in the degradation of the model compound even at pH 2. although the additional degradation of the model compound was inhibited by the low pH. Inhibition of the degradation of carbohydrates by radical species is one of the keys to prevent the viscosity drop in ozone bleaching of pulp.}, number={2}, journal={HOLZFORSCHUNG}, author={Kishimoto, T and Nakatsubo, F}, year={1998}, pages={185–190} }