Collect. Czech. Chem. Commun. 1995, 60, 2112-2118

Polysaccharides from the Flowers of Malva Mauritiana L.: Structure of an Arabinogalactan

Peter Capek and Alžbeta Kardašová

Institute of Chemistry, Slovak Academy of Sciences, 842 38 Bratislava, Slovak Republic


A water-soluble arabinogalactan composed of D-galactose and L-arabinose in the mole ratio 1 : 1.4 has been isolated from the flowers of Malva mauritiana L. Partial acid hydrolysis, methylation analysis, periodate oxidation, and 13C NMR spectroscopy were employed in structure elucidation. The arabinogalactan was shown to have a highly branched structure. The core consisted of 1,6-linked β-D-galactopyranose units, about 65% of which were substituted in position C-3 by side-chains of mainly 1,5-linked α-L-arabinofuranosyl residues.