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Closed Access item Origin of the acetylated structures present in white birch (Betula pendula Roth) milled wood lignin

Authors:Rencoret, Jorge
Río Andrade, José Carlos del
Gutiérrez Suárez, Ana
Martínez Ferrer, Ángel Tomás
Parkås, Jim
Li, Shiming
Lundquist, Knut
Issue Date:Jan-2012
Citation:Wood Science and Technolog 46(1-3): 459–471 (2012)
Abstract:The occurrence and nature of acetate groups in the milled wood lignin (MWL) isolated from birch (Betula pendula Roth) has been addressed by spectroscopic (2D-NMR) and chemical degradative (derivatization followed by reductive cleavage, DFRC) methods. Considerable amounts of acetate groups were present in the MWL preparation. However, 2D-NMR analysis indicated that the lignin polymer is not extensively acetylated and that the major part of the acetate groups is attached to the xylan moieties present in the MWL preparation. Nevertheless, evidence of the presence of minor acetylation of the γ-carbon of the lignin side chain (<3% of both syringyl and guaiacyl lignin units) was provided by DFRC analysis
Description:13 páginas, 4 figuras, 2 tablas -- PAGS nros. 459-471
Publisher version (URL):http://dx.doi.org/10.1007/s00226-011-0417-z
E-ISSNmetadata.dc.identifier.doi = DOI:1432-5225
Appears in Collections:(IRNAS) Artículos
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