Gellan gum is less dynamic sphingolipids single cell bacteria (Sphingomonaspaucimobilis) fermentation spores outside of an anionic polysaccharide , molecular weight of up to 5 * 10 6. US FDA license in 1992, used in food and feed. Native gellan gum containing 46% glucose , 30% rhamnose , glucuronic acid, 21% , 3% acetic acid and glycerides , acetyl and acyl glycerol typically connected at C2 and C6 position of the glucose residues . , soluble in water, ethanol and other solvents ; conduct various kinds of addition reactions , esterification and polymerization reaction is an important chemical production raw material.