Structure characterization of a novel neutral polysaccharide isolated from Ganoderma lucidum fruiting bodies

► A novel polysaccharide was extracted from Ganoderma lucidum. ► The polysaccharide was composed of Gal, Rha and Glc. ► The molecular weight of the polysaccharide was 78 kDa. ► The structure contained 1,2-β-l-Rhap, 1,3,6-α-d-Galp, 1,2,6-α-d-Glcp and 1-α-d-Glcp.