... widely used in more than twenty industrial fields,such as food, pharmaceutical,fine chemical,agriculture,oil drilling and exploitation,and so ... ,xanthan gum keep its viscosity. It can be used as freeze/thaw stabilizer.4,Satisfying compatibility with acid,alkaline,brine,enzyme ... and environment. 1983, FAO/WHO approved xanthan gum as safe food additive and didn't limit its additional ratio. As a ...