The polysaccharide of the mucin secreted by the leaves of Drosera capensis is composed of L-arabinose, D-xylose, D-galactose, D-mannose, and D-glucuronic acid in the molar ratio of 3.6 : 1 .O : 4.9 : 8.4 : 8.2. For structural elucidation, methylation analysis using g.1.c. and g.l.c.-m.s. was perform
Studies of an acidic polysaccharide from Encephalartos friderici guilielmi
โ Scribed by Matteo Adinolfi; Maria Michela Corsaro; Lorenzo Mangoni; Michelangelo Parrilli; Elia Poerio
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 454 KB
- Volume
- 222
- Category
- Article
- ISSN
- 0008-6215
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โฆ Synopsis
An acidic polysaccharide from Encephalartosfriakriciguilielmi has been shown by chemical degradative methods and '"C-n.m.r. spectroscopy to comprise a (1 +3)-p-o-galactan main chain with cc-L-Rhap-(1 +4)-/?-D-GlcpA-, a-L-Ara$( 1 -&)+o-Galp, and a-L-Araf( 1 + 6)-p-D-Gab-( 1+3)-p-o-Galp branches at positions 6.
๐ SIMILAR VOLUMES
Pineapple-fibre holocellulose was extracted with alkaline solutions of increasing concentration to give hemicellulose fractions I-III. Purified fraction I (major component) contained D-xylose, L-arabinose, and 4-0-methyl-D-glucuronic acid in the molar proportions 10:0.6: 1, and an average of -116 su