Definition
Xanthan gum biopolymer is a polysaccharide used as a food additive and rheology modifier, commonly employed as a thickening and stabilizing agent in various industries.
Etymology
The term "xanthan" is derived from the bacterium Xanthomonas campestris, which produces this biopolymer through fermentation.
Example usage
'The salad dressing uses xanthan gum biopolymer to maintain its creamy texture.'
Interesting fact
Xanthan gum was discovered in the early 1960s by scientists at the U.S. Department of Agriculture. It was approved for use in foods in 1968 and has since become a staple in food production.
Source: U.S. Food and Drug Administration
Explanation and detail
Production
Xanthan gum is produced through the fermentation of glucose or sucrose by the bacterium Xanthomonas campestris. The resulting polysaccharide is precipitated with isopropyl alcohol, dried, and ground into a fine powder.
Applications
In the food industry, xanthan gum is valued for its ability to stabilize emulsions and suspend particles, making it essential in products like salad dressings, sauces, and ice creams. Its unique properties also make it useful in pharmaceuticals and cosmetics.
Properties
One of the key characteristics of xanthan gum is its ability to increase the viscosity of a liquid by a small percentage, which is highly beneficial in maintaining texture and consistency across a range of temperatures.
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