Thickener and stabilizer xanthan gum
Xanthan gum is a light yellow to white flowing powder with a slight odor. Soluble in cold and hot water, neutral solution, resistant to freezing and thawing, insoluble in ethanol. Disperse in water and emulsify into a stable hydrophilic viscous colloid.
Because of its unique properties, xanthan gum has been widely used in more than ten fields such as food, petroleum, medicine, daily chemical industry, etc. Its high commercialization degree and wide application range make any other microbial polysaccharides far behind.
Food:Many foods are added Xanthan gum as a stabilizer, emulsifier, suspending agent, thickening agent and processing auxiliary agent. Xanthan gum can control the rheology, structure, flavor and appearance of products, and its pseudoplasticity can ensure good taste, so it is widely used in salad dressing, bread, dairy products, frozen food, beverage, seasoning, brewing, confectionery, pastry, soup and canned food. In recent years, people in more developed countries have tended to worry that the calorific value of food is too high to make them fat. Xanthan gum, because it is not directly degraded by the body, has overcome this concern. In addition, it was reported in Japan in 1985 that xanthan gum was the most effective anti-cancer agent among 11 food additives in comparative tests.
Daily chemical:Xanthan gum molecules contain a large number of hydrophilic groups, is a good surface active substance, and has anti-oxidation, prevent skin aging and other effects, therefore, almost the vast majority of high-grade cosmetics Xanthan gum as its main functional ingredient. In addition, Xanthan gum can also be used as the essence of toothpaste to thicken and shape, and reduce tooth surface wear.
Medical:Xanthan gum is a functional component of microcapsule drug capsules that are popular in the world at present, and plays an important role in controlling drug release; Due to its own strong hydrophilic and water retention, there are many specific medical applications, such as forming a dense water film, so as to avoid skin infection; Alleviate the thirst of patients after radiotherapy. In addition, Li Xin, Xu Lei have written that Xanthan gum itself on the humoral immune function of mice has a significant enhancement.
Industrial and agricultural applications:In the petroleum industry, due to its strong pseudoplastic, low concentration of Xanthan gum (0.5%) aqueous solution can maintain the viscosity of drilling fluid and control its rheological properties, so in the high-speed rotation of the drill part viscosity is very small, saving power; High viscosity is maintained in the relatively static part of the borehole to prevent wall collapse. And because of its excellent salt resistance and heat resistance, it is widely used in Marine, high salt zone and other special environment drilling, and can be used as oil recovery agent, reduce dead oil area, improve oil recovery rate.
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