Chemical and spectroscopic studies of Cercidium praecox gum exudate

✍ Scribed by Gladys León de Pinto; Maritza Martínez; Carlos Rivas

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 680 KB
• Volume: 260
• Category: Article
• ISSN: 0008-6215
• DOI: 10.1016/0008-6215(94)80018-9

✦ Synopsis

The structure of the polysaccharide from Cetckkm pruecox (R&P) Harms gum exudate has been studied by Smith degradation, by sugar and methylatjon analyses, and by 13C NMR spectroscopy. The results showed a (1 + 4~xylan core. Some xylose residues are substituted at O-2 by cr-r)-glucuronic acid and 4-o-rn~~hyl~-n-g~ucuronic acid residues. ~-D-GlUCUrOniC acid is present, probably as terminal residues. The arabinose is present as cu-L-furanose and /3-L-pyranose.