Oligosaccharides generated by partial hydrolysis of the borate-rhamnogalacturonan II complex from sugar beet

Phytochemistry. 1998 Nov;49(5):1195-202. doi: 10.1016/s0031-9422(98)00119-8.


The borate-rhamnogalacturonan II complex (B-RG-II), isolated from sugar beet (Beta vulgaris), was partially acid-hydrolyzed. The oligosaccharides generated were characterized by glycosyl-composition and glycosyl-linkage analyses, ES-mass, and NMR spectroscopy. Two disaccharides, alpha-L-Rhap-(1-->5)-D-Kdo and alpha-L-Araf-(1-->5)-Dha, an aceric acid-containing oligosaccharide, and a 2-O-Me-Xyl-containing oligosaccharide, in addition to partially methyl-esterified alpha-(1-->4)-oligogalacturonides were characterized. The data provide additional evidence that B-RG-II isolated from different plant species have identical structures.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Borates / chemistry*
  • Borates / isolation & purification
  • Carbohydrate Sequence
  • Chenopodiaceae / chemistry*
  • Chromatography, High Pressure Liquid
  • Gas Chromatography-Mass Spectrometry
  • Hydrolysis
  • Molecular Sequence Data
  • Nuclear Magnetic Resonance, Biomolecular
  • Oligosaccharides / chemistry*
  • Pectins / chemistry*
  • Pectins / isolation & purification


  • Borates
  • Oligosaccharides
  • rhamnogalacturonan II
  • Pectins