Xanthan gum (CAS 11138-66-2)

Xanthan gum, a high molecular weight polysaccharide derived from the fermentation of carbohydrates by Xanthomonas campestris bacterium, possesses exceptional properties that make it valuable in various industrial and scientific fields. One of its notable characteristics is its ability to create stable gels, emulsions, and suspensions. Xanthan gum finds utility as an anionic polysaccharide in chemical delivery systems, effectively forming stable chemical suspensions. It has also been employed as a lipid texture mimic, serving as a control in experiments related to signaling pathways. The composition of xanthan gum consists of a β-(14)-D-glucopyranose glucan backbone, accompanied by side chains composed of (13)-α-D-mannopyranose-(21)-β-D-glucuronic acid-(41)-β-D-mannopyranose on alternating residues. This polysaccharide finds extensive application in scientific research. It acts as a thickening agent in food and cosmetic products, a stabilizer in pharmaceuticals, and a viscosifier in oil drilling fluids. Moreover, xanthan gum has played a role in the development of biodegradable plastics and innovative drug delivery systems. The mechanism of action of xanthan gum involves the formation of an interwoven network of long chains, effectively entrapping water and other molecules to create a thick and viscous solution. This network also imparts stability to emulsions and suspensions, preventing the separation of different components.