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Elucidation of the structures of residual and dissolved pine kraft lignins using an HMQC NMR technique.
Comparative studies on the structures of residual and dissolved lignins isolated from pine kraft pulp and pulping liquor have been undertaken using the (1)H-(13)C HMQC NMR technique, GPC, and sugarExpand
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Characterization of lignin by 1H and 13C NMR spectroscopy
Publisher Summary This chapter discusses the characterization of lignin by 1 H and 13 C nuclear magnetic resonance (NMR) spectroscopy. The latter includes techniques for obtaining routine,Expand
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Structural Analysis of Residual and Technical Lignins by 1H-13C Correlation 2D NMR-Spectroscopy
Summary Structural analysis was conducted on residual lignin from pine Kraft AQ pulp, Eucalyptus Kraft lignin from Eucalyptus globulus and Repap Organosolv lignin by 2D 13C-1H correlation NMRExpand
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Kinetic Studies on Oxidation of Veratryl Alcohol by Laccase-Mediator System. Part 1. Effects of Mediator Concentration
Summary Kinetics of the laccase-catalyzed oxidation of veratryl alcohol with dioxygen in the presence of 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diamonium salt (ABTS), the mediator,Expand
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Aromatic Acids Produced during Degradation of Lignin in Spruce Wood by Phanerochaete Chrysosporium
Spruce wood was pre-extracted, decayed with the white-rot fungus Phanerochaete chrysosporium to a 20% loss in lignin content, and then extracted successively with solvents of increasing polarity pet.Expand
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13C NMR Spectroscopic Study of Spruce Lignin Degraded Phanerochaete Chrysosporium
Pre-extracted spruce wood chips were degraded by Phanerochaete chrysosporium to a 20% loss in lignin (8% total weight loss) and extracted successively with petroIeum ether, Chloroform, acetone,Expand
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Carboxylic Acids Produced Through Oxidative Cleavage of Aromatic Rings During Degradation of Lignin in Spruce Wood by Phanerochaete Chrysosporium
Abstract Pre-extracted spruce wood chips were decayed by Phanerochaete chrysoaporium to a 20% loss in lignin (8% loss in total weight), and extracted successively with petroleum ether, chloroform,Expand
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Biobleaching of pulp with dioxygen in the laccase-mediator system — reaction mechanisms for degradation of residual lignin
Abstract Pine Kraft-AQ pulp was biobleached with pressurized dioxygen at 40°C in laccase-mediator system (LMS), i.e. in acetate buffer (pH 4.5) containing Coriolus-laccase and 1-hydroxy-benzotriazoleExpand
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Model compound studies on the cleavage of glycosidic bonds by ozone in aqueous solution
Kinetic expressions have been developed for the initial phase of the reactions between ozone and methyl-β-D-glucopyranoside, a model compound for cellulose, in aqueous solutions at moderately low pHExpand
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Characterization of lignin by oxidative degradation: Use of gas chromatography-mass spectrometry technique
Publisher Summary This chapter discusses (1) determination of extract, moisture and lignin contents in plant tissues, (2) preparation of milled wood lignin (MWL) from woody plant tissues, (3)Expand
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