Xanthan gum, also known as xanthan gum, is a microbial extralar substance with a wide range of functions produced by Xanthomnas campestris through fermentation engineering using carbohydrates as the main raw material (such as corn starch). polysaccharide. It has unique rheology, good water solubility, stability to heat and acid and alkali, and good compatibility with a variety of salts. It can be widely used as a thickener, suspending agent, emulsifier, and stabilizer. Used in more than 20 industries such as food, petroleum, and medicine, it is currently the largest production scale and extremely versatile microbial polysaccharide in the world.