An alkali-soluble heteroxylan from seeds of Phoenix dactylifera L.
Alkali-soluble polysaccharides, isolated from the seeds of dates, have been investigated using methylation and partial hydrolysis studies. The polysaccharides are shown to contain D-xylose and 4-O-methyl-D-glucuronic acid in a molar ratio of 5:1. An aldobiouronic acid from hemicellulose was characterized, and investigation revealed that the hemicellulose consists of a polymer of (1-->4)-linked D-xylopranosyl residues having branches of D-xylopyranosyl and 4-O-methyl-alpha-D-glucopyranosyluronic acid.
Ishurd
Omar
O
Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
Ali
Yousef
Y
Wei
Wanxing
W
Bashir
Fatma
F
Ali
Amna
A
Ashour
Ahmed
A
Pan
Yuanjiang
Y
D000468:Alkalies / Q000737:chemistry; D028023:Arecaceae / Q000737:chemistry*; D002240:Carbohydrate Sequence; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008745:Methylation; D008969:Molecular Sequence Data; D010936:Plant Extracts / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry; D012639:Seeds / Q000737:chemistry*; D012995:Solubility; D014990:Xylans / Q000737:chemistry* / Q000302:isolation & purification*
D000468:Alkalies; D010936:Plant Extracts; D011134:Polysaccharides; D014990:Xylans; C007916:hemicellulose