Xanthan Gum Food Grade

xanthan gum food grade
is a polysaccharide secreted by the bacterium xanthomonas campestris , used as a food additive and rheology modifier, commonly used as a food thickening agent (in salad dressings, for example) and a stabilizer (in cosmetic products, for example, to prevent ingredients from separating). it is composed of pentasaccharide repeat units, comprising glucose, mannose, and glucuronic acid in the molar ratio 2.0:2.0:1.0. it is produced by the fermentation of glucose , sucrose , or lactose . after a fermentation period, the polysaccharide is precipitated from a growth medium with isopropyl alcohol , dried, and ground into a fine powder. later, it is added to a liquid medium to form the gum.