STRUCTURAL STUDY OF EXTRACTABLE LIGNINS F ROM OAK HEARTWOOD

Authors
VIVAS N DEGAULEJAC NSC BOURGEOIS G VITRY C PIANET I BARBE B GLORIES Y
Citation
N. Vivas et al., STRUCTURAL STUDY OF EXTRACTABLE LIGNINS F ROM OAK HEARTWOOD, Journal de chimie physique et de physico-chimie biologique, 95(2), 1998, pp. 430-436
Citations number
7
Categorie Soggetti
Biology,"Chemistry Physical
Journal title
Journal de chimie physique et de physico-chimie biologique → ACNP
Volume
95
Issue
2
Year of publication
1998
Pages
430 - 436
Database
ISI
SICI code
Abstract
In this work, authors present a structural investigation of two extrac tible heartwood lignins from Q. robur: LE, extractable by acidic hydro alcoholic medium (MW 23 kDa) and LD, extractable by acidified dioxan ( MW 45 kDa), NMR spectrum analysis with 2D TOCSY and HMQC experiments p erformed the structural characteristics of this two lignins fractions. LD and LE contain principaly monomethoxyl (Gaiacyls) and dimethoxyl ( Syringyls) phenolic units with beta-O-4 ary-ether linkage. LD are rich er in G units than LE.