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 Detection of muconic acid type structures in oxidised lignins using 2D NMR spectroscopy: 10(th) EWLP, Stockholm, Sweden, August 25-28, 2008
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/6750

title: Detection of muconic acid type structures in oxidised lignins using 2D NMR spectroscopy: 10(th) EWLP, Stockholm, Sweden, August 25-28, 2008
authors: Evtuguin, DV
Rocha, G
Goodfellow, BJ
keywords: Lignin
muconic acid structures
NMR spectroscopy
oxidation
structural analysis
issue date: 2009
publisher: Walter de Gruyter
abstract: The identification of muconic acid type structures (MATS) in oxidised lignins employing 2D NMR spectroscopy was carried out. The primary database for MATS detection by single bond (1)H-(13)C (HSQC) and long-range (1)H-(1)H and (1)H-(13)C correlation (COSY and HMBC) NMR experiments was obtained with a series of model compounds: cis, cisand trans, trans-muconic acids and their methylated analogues and MATS derived from monomeric lignin model compounds oxidised by ClO(2). Additional information was obtained from the study of oxygen-organosolv lignin obtained from spent liquor after the spruce wood delignification with oxygen in an acetone-water solution. This work allowed the reliable assignment of MATS signals in the HSQC spectra of oxidised lignin and provides a methodology for detection and distinguishing of MATS from structurally similar moieties.
URI: http://hdl.handle.net/10773/6750
ISSN: 0018-3830
publisher version/DOI: http://dx.doi.org/10.1515/HF.2009.083
source: Holzforschung
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