Gum polysaccharide structure from Moringa oleifera Lam. plant gum by methylation technique

Gum polysaccharide has been extracted from Moringa oleifera Lam. plant gum (Moringaceae) with water as Larabinose and D-galactose in 1:4 molar ratio with traces of L-fructose. The purified gum polysaccharide was completely methylated by Hakomari and Purdie’s method which afforded methyl sugars as : 2,3,4,6-tetra-O-methyl- D-galactose; 2,3,4-tri-O-methyl-D-galactose; 2,4-di-O-methyl-D-galactose and 2,2-di-O-methyl-L-arabinose were found in the molar ratio of 1:1:2:1 and also present uronic acid as : 2,3,4-tri-O-methyl-D-glucuronic acid (1 mole).