Xanthan Gum is a kind of hydrophilic biological polysaccharide which is mainly made from starch, is a high molecular weight polysaccharide produced by fermentation with Xanthomonas Campestris under the conditions of special nutrient medium, PH, O2-supply and temperature, the purified, dried and milled into white-like or light-yellow free-flowing powder. Xanthan Gum can be widely used in more than twenty industrial fields, such as food pharmaceutical, fine