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What is Xanthan Gum CAS 11138-66-2

Views: 86     Author: Site Editor     Publish Time: 31-08-2021      Origin: Site


Xanthan Gum Properties

Xanthan gum(CAS 11138-66-2) is a light yellow or white flowable powder with a slight odour. It is soluble in cold and hot water and the solution is neutral and resistant to freezing and thawing.While it is insoluble in ethanol. Dispersed in water, it will be emulsified into a stable hydrophilic viscous colloid.



Xanthan Gum Uses and Synthesis

Uses: thickener, suspending agent, emulsifier, stabilizer


Xanthan gum, also known as xanthan gum and Hansen gum, is an extracellular acidic heteropolysaccharide produced by the fermentation of Xanthomonas campestris. It is a polysaccharide polymer compound consisting of D-glucose, D-mannose and D-glucuronic acid in a 2:2:1 ratio, with a relative molecular mass of over 1 million.

Xanthan gum is currently the most superior biological gum in the world, combining thickening, suspension, emulsification and stabilisation. The number of pyruvate groups contained at the end of the side chains of xanthan gum has a great influence on its performance. Xanthan gum has the general properties of a long-chain polymer, but it contains more functional groups than the average polymer and displays unique properties under certain conditions. Its conformation in aqueous solution is diverse and it exhibits different properties under different conditions.


Xanthan gum has a wide range of applications in food, petroleum, pharmaceuticals, daily chemicals and more than a dozen other fields.

1.In food: Xanthan gum is added to many foods as a stabilizer, emulsifier, suspending agent, thickening agent and processing aid. Xanthan gum can control the rheology, structure, flavour and appearance of the product, and its pseudoplasticity can ensure the good taste of food, so it is widely used in salad dressings, bread, dairy products, frozen foods, beverages, condiments, brewing, confectionery, pastries, soups and canned foods.

2.In daily use chemicals: xanthan gum molecules, containing a large number of hydrophilic groups, is a good surface active substances, and has antioxidant, antiaging effects. Therefore, xanthan gum as the main functional ingredients in most high-end cosmetics. In addition, xanthan gum can also be used as the thickerner in toothpaste which helps to reduce tooth wear.

3.In medicine: Xanthan gum is a functional component of internationally sought-after microencapsulated drugs and plays an important role in controlling the slow release of drugs. With its strong hydrophilicity and water retention, it also has many specific medical applications, such as forming a dense water film to avoid skin infections and reducing patients' thirst after radiation therapy. 

4.In the oil industry: Xanthan gum is used in large quantities to thicken drilling mud. These fluids carry the solids cut by the drilling bit to the surface. Xanthan gum provides great "low end" rheology. When circulation stops, the solids remain suspended in the drilling fluid. The widespread use of horizontal drilling and the demand for good control of drilled solids has led to its expanded use. It has been added to concrete poured underwater, to increase its viscosity and prevent washout.

Preparation method

Xanthan gum is a kind of microbial polysaccharide of wide application. It is produced by the fermentation of carbohydrates (e.g. corn starch) in the help of Xanthomonas campestris.


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