Water soluble gum polysaccharide was extracted from Moringa oleifera Lam. plant as L-arabinose and D-galactose in 1:4 molar ratio with traces of L-fucose. Methylation of aldobiouronic acid was obtained from graded hydrolysis of degraded gum polysaccharide gave mixture of methyl sugars as: 2,3,4-tri-O-methyl-D-galactose and 2,3,4-tri-O-methyl-D-glucuronic acid.