Chemical and spectroscopic studies of Cercidium praecox gum exudate

Carbohydr Res. 1994 Jul 4;260(1):17-25. doi: 10.1016/0008-6215(94)80018-9.

Abstract

The structure of the polysaccharide from Cercidium praecox (R&P) Harms gum exudate has been studied by Smith degradation, by sugar and methylation analyses, and by 13C NMR spectroscopy. The results showed a (1-->4)-xylan core. Some xylose residues are substituted at O-2 by alpha-D-glucuronic acid and 4-O-methyl-alpha-D-glucuronic acid residues. beta-D-Glucuronic acid is present, probably as terminal residues. The arabinose is present as alpha-L-furanose and beta-L-pyranose.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Arabinose / analysis
  • Carbohydrate Sequence
  • Chromatography, Paper
  • Fabaceae / chemistry*
  • Glucuronates / analysis
  • Glucuronic Acid
  • Hydrolysis
  • Magnetic Resonance Spectroscopy
  • Molecular Sequence Data
  • Plant Extracts / chemistry*
  • Plants, Medicinal*
  • Polysaccharides / chemistry*
  • Xylans / chemistry
  • Xylose / analysis

Substances

  • Glucuronates
  • Plant Extracts
  • Polysaccharides
  • Xylans
  • Glucuronic Acid
  • Xylose
  • Arabinose