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A hemicellulose B fraction from grape skin (Vitis vinifera, Palomino variety).
- Source :
-
Journal of natural products [J Nat Prod] 2001 Sep; Vol. 64 (9), pp. 1174-8. - Publication Year :
- 2001
-
Abstract
- The structure of a hemicellulose B fraction (B-1) isolated from grape skins (Vitis vinifera) of the Palomino variety has been studied by methylation analysis, (1)H NMR and (13)C NMR spectroscopy, and partial acid hydrolysis. Hemicellulose B-1 appeared to be homogeneous by gel filtration with a weight-average molecular weight of 22 600. This polysaccharide is a linear xyloglucan chain composed of xylopyranosyl and glucopyranosyl residues linked by beta-(1-->4) glycosidic bonds. Attached to this backbone, 4-O-methyl-D-glucuronopyranosyl acid, D-glucopyranosyl, and L-fucopyranosyl residues occur at position 2 in a ratio of one residue for every five units of xylose in the main chain, with D-xylopyranosyl residues attached at position 6 of glucose units in a ratio of one residue for every two glucose-derived moieties in the main chain.
- Subjects :
- Carbohydrate Sequence
Cellulose chemistry
Chromatography, Gas
Chromatography, High Pressure Liquid
Chromatography, Paper
Gas Chromatography-Mass Spectrometry
Hydrolysis
Magnetic Resonance Spectroscopy
Mass Spectrometry
Methylation
Molecular Sequence Data
Molecular Structure
Polysaccharides isolation & purification
Seeds chemistry
Spain
Spectrophotometry, Infrared
Cellulose isolation & purification
Dietary Fiber analysis
Polysaccharides chemistry
Vitis chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 0163-3864
- Volume :
- 64
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Journal of natural products
- Publication Type :
- Academic Journal
- Accession number :
- 11575951
- Full Text :
- https://doi.org/10.1021/np000363c