Application direction: thickener, suspension agent, etc.

Application industries: food, petroleum, medicine, etc.

Xanthan gum, also known as yellow gum and Hansheng gum, is an extracellular acidic heteropolysaccharide produced by fermentation of Xanthan bacteria. It is a polysaccharide polymer compound composed of D-glucose, D-mannose and D-glucuronic acid at 2:2:1, with a relative molecular mass of more than 1 million. The secondary structure of xanthan gum is the side chain is wound in reverse around the main chain skeleton, and the rod-shaped double helix structure is maintained through hydrogen bonding.

Xanthan gum is a light yellow to white flowable powder with a slight smell. Easy to soluble in cold and hot water, neutral in solution, resistant to freezing and thawing, and insoluble in ethanol. When dispersed and emulsified, it becomes a stable hydrophilic viscous colloid.

Xanthan gum is currently the most excellent biogellent that integrates thickening, suspension, emulsification and stability. The amount of pyruvate groups at the end of the molecular side chain of xanthan gum has a great impact on its performance. Xanthan gum has the general properties of long-chain polymers, but it contains more functional groups than ordinary polymers and will show unique properties under specific conditions. Its conformation in aqueous solution is diverse and exhibits different characteristics under different conditions.

1. Suspension and emulsification

Xanthan gum has a good suspension effect on insoluble solids and oil droplets. Xanthan gum sol molecules can form superbound band-shaped spiral interpolymers to form fragile gel-like network structures, so they can support the morphology of solid particles, droplets and bubbles, showing strong emulsification and stabilization and high suspension capabilities.

2. Good water solubility

Xanthan gum can dissolve quickly in water and has good water solubility. It can also be dissolved in cold water, which can save complicated processing and be easy to use. However, because it has extremely strong hydrophilicity, if water is added directly and the stirring is insufficient, the outer layer absorbs water and expands into a rubber ball, which will prevent moisture from entering the inner layer, thereby affecting the performance of its effect. Therefore, it is necessary to pay attention to the correct use. Mix xanthan gum dry powder or dry powder auxiliary materials such as salt and sugar slowly add stirred water to feed it, and make a solution.

3. Thickness

Xanthan gum solution has the characteristics of low concentration and high viscosity (the viscosity of 1% aqueous solution is equivalent to 100 times that of gelatin), and is a highly efficient thickening agent.