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A comprehensive approach for quantitative lignin characterization by NMR spectroscopy.
A detailed approach for the quantification of different lignin structures in milled wood lignin (MWL) has been suggested using a combination of NMR techniques. 1H-13C heteronuclear multiple quantumExpand
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Quantification of lignin–carbohydrate linkages with high-resolution NMR spectroscopy
A quantitative approach to characterize lignin–carbohydrate complex (LCC) linkages using a combination of quantitative 13C NMR and HSQC 2D NMR techniques has been developed. Crude milled wood ligninExpand
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Quantitative characterization of a hardwood milled wood lignin by nuclear magnetic resonance spectroscopy.
The structure of Eucalyptus grandis milled wood lignin (MWL) was investigated by 2D 1H-13C HSQC, HMQC, and 1H-1H TOCSY correlation NMR techniques and by quantitative 13C NMR as well as by theExpand
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MWL fraction with a high concentration of lignin-carbohydrate linkages: Isolation and 2D NMR spectroscopic analysis
Abstract A preparation enriched in lignin-carbohydrate fragments (LCC-AcOH) was isolated in the course of purification of loblolly pine crude milled wood lignin (MWL). The preparation containedExpand
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On the Quantification of Lignin Hydroxyl Groups With 31P and 13C NMR Spectroscopy
Factors affecting the accuracy of the analysis of lignin hydroxyl and carboxyl groups with 31P NMR have been further elucidated. Two modifications of 31P NMR analysis of lignin, namely the protocolsExpand
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EFFECT OF HARDWOODS CHARACTERISTICS ON KRAFT PULPING PROCESS: EMPHASIS ON LIGNIN STRUCTURE
In an attempt to explain variations in delignification behaviors among different hardwood species, the kraft pulping delignification rates of Eucalyptus urograndis, E. nitens, E. globulus, sweet gum,Expand
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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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Label-free in situ imaging of lignification in the cell wall of low lignin transgenic Populus trichocarpa
Chemical imaging by confocal Raman microscopy has been used for the visualization of the cellulose and lignin distribution in wood cell walls. Lignin reduction in wood can be achieved by, forExpand
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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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Comprehensive structural analysis of biorefinery lignins with a quantitative 13C NMR approach
The advance in analytical methodology is critical for the progress in the biorefinery and lignin commercialization. This paper reports a comprehensive approach (more than 30 common structuralExpand
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