Xanthan gum is an extracellular acidic heteropolysaccharide produced by Xanthomonas fermentation. Xanthan gum is a polysaccharide polymer compound composed of D-glucose, D-mannose and D-glucuronic acid in a ratio of 2:2:1, with a relative molecular mass of more than 1 million. The secondary structure of xanthan gum is that the side chains are reversely wound around the main chain skeleton, and are maintained through hydrogen bonds to form a rod-like double helix structure.

Xanthan gum has unique rheology, good water solubility, stability to heat and acid and alkali, and good compatibility with a variety of salts. It can be used as a thickening agent and suspending agent. , emulsifiers, stabilizers, and can be widely 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.

Main uses

Due to its unique properties, xanthan gum has been widely used in more than a dozen fields such as food, petroleum, medicine, and daily chemicals. Its commercialization Its high degree and wide range of applications make it unmatched by any other microbial polysaccharide.

1. Food: Xanthan gum is added to many foods as a stabilizer, emulsifier, suspending agent, thickener and processing aid. Xanthan gum can control the rheology, structure, flavor and appearance of the product, and its pseudoplasticity can ensure a good taste.

2. In terms of daily chemicals: Xanthan gum molecules contain a large number of hydrophilic groups, which is a good surface-active substance and has the effects of antioxidants and preventing skin aging. Therefore, it is almost Xanthan gum is used as the main functional ingredient in most high-end cosmetics. In addition, xanthan gum can also be used as an ingredient in toothpaste to thicken and shape the toothpaste, reducing tooth surface wear.

3. Medical aspects: Xanthan gum is currently a popular functional component in microencapsulated drug capsules in the world. It plays an important role in controlling the sustained release of drugs; due to its strong hydrophilicity and water retention properties, as well as many specific medical procedures.

4. Applications in industry and agriculture: In the petroleum industry, due to its strong pseudoplasticity, a low concentration of xanthan gum (0.5) aqueous solution can maintain the viscosity of drilling fluid and control its rheological properties. Therefore, the viscosity is extremely small in the high-speed rotating drill bit, saving power; while the viscosity is maintained high in the relatively stationary drilling part, thereby preventing well wall collapse.

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