Structural characterization of a pectic polysaccharide from Nerium indicum flowers

A pectic polysaccharide, J6, isolated from the hot-water extract of the flowers of Nerium indicum Mill., contains a rhamnogalacturonan I backbone, with various branches attached to O-4 of rhamnose. J6 stimulates production of nitric oxide in RAW264.7 macrophage cells.