Structural studies of an arabinoxylan isolated from Litsea glutinosa (Lauraceae).
A water-soluble arabinoxylan (D-xylose and L-arabinose in the molar ratio 1.0:3.4) was isolated from the mucilaginous bark of Litsea glutinosa (Lauraceae). The results of methylation analysis, partial hydrolysis, and 1H- and 13C-n.m.r. spectroscopy indicated a backbone of (1----4)-linked beta-D-xylopranosyl residues substituted at both positions 2 and 3 with side chains composed of either single or (1----3)-linked arabinofuranosyl residues. Both alpha-L- and beta-L-arabinofuranosyl residues were present. It is possible that side chains composed of two beta-L-arabinofuranosyl residues are attached mainly at O-2 of some xylosyl residues.
Herath
H M
HM
Department of Chemistry, University of Peradeniya, Sri Lanka.
Kumar
N S
NS
Wimalasiri
K M
KM
D001089:Arabinose / Q000032:analysis; D002240:Carbohydrate Sequence; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D011134:Polysaccharides; D012995:Solubility; D014197:Trees; D014990:Xylans; D014994:Xylose / Q000032:analysis
D011134:Polysaccharides; D014990:Xylans; D014994:Xylose; D001089:Arabinose