Pharmaceutical Chemicals
Description
Xanthan Gum CAS 11138-66-2 as Thickener
Product Name: Xanthan gum;
Synonyms: GUM XANTHAN;GLUCOMANNAN;GLUCOMANNAN MAYO;GALACTOMANNANE;RHODOPOL 23;XANTHAN;XANTHAN GUM;XANTEMPO(TM);
CAS: 11138-66-2;
MF: C35H49O29;
EINECS: 234-394-2;
Product Categories: Food & Feed ADDITIVES;Food additives;Mud Drilling Chemicals;Oil drilling Chemicals;API;thickener;
Description:
Xanthan gum is a polysaccharide secreted by the bacterium Xanthomonas campestris, used as a food additive and rheology modifier, commonly used as a food thickening agent (in salad dressings, for example) and a stabilizer (in cosmetic products, for example, to prevent ingredients from separating). It is composed of pentasaccharide repeat units, comprising glucose, mannose, and glucuronic acid in the molar ratio 2:2:1. It is produced by the fermentation of glucose, sucrose, or lactose. After a fermentation period, the polysaccharide is precipitated from a growth medium with isopropyl alcohol, dried, and ground into a fine powder. Later, it is added to a liquid medium to form the gum.
Usage:
1. One of the most remarkable properties of xanthan gum is its ability to produce a large increase in the viscosity of a liquid by adding a very small quantity of gum, on the order of one percent. In most foods, it is used at 0.5%, and can be used in lower concentrations. The viscosity of xanthan gum solutions decreases with higher shear rates; this is called shear thinning or pseudoplasticity. This means that a product subjected to shear, whether from mixing, shaking or even chewing, will thin out, but, once the shear forces are removed, the food will thicken back up.
2. In salad dressing, for example, the addition of xanthan gum makes it thick enough at rest in the bottle to keep the mixture fairly homogeneous, but the shear forces generated by shaking and pouring thins it, so it can be easily poured. When it exits the bottle, the shear forces are removed and it thickens back up, so it clings to the salad.
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Nanjing Bangnuo Biotechnology Co., Ltd.
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