Industrial grade xanthan gum
Description：
Xanthan Gum, which is mainly made from starch, is a high molecular weight polysaccharide produced by fermentation with Xanthomonas Campestris under the conditions of special nutrient medium, pH, O2-supply and temperature, then purified, dried and milled into white-like or light-yellow free-flowing powder. The main compositions of Xanthan Gum are D-glucopyranose glucan,D-mannose and D-Glucuronic acid. X-ray determining indicates that Xanthan Gum has a antiparallel double helices conformation, on which its special properties of water solution base.
Specifications:
Industrial-grade xanthan gum can be widely used in oil drilling, pesticide, feed, ceramics, printing and dyeing, ore dressing, paints and coatings, paper making industry, thickening and stable effect is obvious.
1. Suspended and emulsification
Xanthan gums have good suspension effect of insoluble solids and oil droplets. Xanthan gum sol molecule can form super combination of banded spiral copolymer, constitute a fragile similar plastic mesh structure, so that can support the shape of the solid particles, liquid droplets, and bubbles, showed a strong ability of emulsion stability and high suspended.
2. Good water solubility
Xanthan gum can quickly dissolved in water, has a good water solubility. Special also can dissolve in cold water, can save multifarious process, easy to use. But because it has extremely strong hydrophilic, if direct water to small and insufficient mixing, the outer will swell into micelles, prevent moisture into the layer, thus influencing the full play of the role, so must pay attention to right use. Xanthan gum powder mix with salt, sugar, etc dry powder well, then slowly add them into the stirring water and feed, made up for the liquor use.
3.Thickening property
Xanthan gum liquor has the character of low concentration and high viscosity (1% aqueous solution viscosity of gelatin 100 times), is a kind of highly effective thickener.
4.Pseudoplastic
Xanthan glue solution under a static or low shear effect has high viscosity , under the effect of high shear performance of viscosity fell sharply, but the molecular structure remains the same. And when the shear force to eliminate, immediately restore the original viscosity.The relationship between shear force and the viscosity is completely plastic. Xanthan gum's pseudoplastic is very prominent.This pseudoplastic is very effective of stable suspension and emulsion.
5. Thermal stability
The viscosity of xanthan gum solution will not change too much along with the change of temperature, general of polysaccharide by heating the viscosity changes will happen, but the xanthan gum aqueous solution viscosity between 10-80 ℃has changed little, even if the low concentration of aqueous solution in a wide temperature range still shows that the stability of the high viscosity. 1% xanthan gum solution (containing 1% potassium chloride) heat from 25 ℃to 120 ℃. Its viscosity reducing only 3%
6.The stability of acid and alkali
Xanthan gum solution is very stable to acid and alkali, make its viscosity between PH 5-10 is not affected, when PH is less than 4 and more than 11, the viscosity changes slightly. Within the scope of the PH3-11, the maximum and the minimum viscosity difference less than 10%. Xanthan gum is soluble in a variety of acid solution, such as 5% sulfuric acid, 5% nitric acid, 5% acetic acid, 10% hydrochloric acid and 25% phosphoric acid. And these xanthan gum acid solutions at normal temperature are quite stable; quality is still not changed for months. Xanthan gum can also dissolve in sodium hydroxide solution, and with thickening properties. The formation of the solution is very stable at normal temperature. Xanthan gum can be strong oxidant, such as perchloric acid, sulfuric acid degradation,With the increase of temperature, the degradation speed raise up.
7.The stability of salt
Xanthan gum solution can miscibility with a lot of salt solution (potassium, sodium, calcium salt, magnesium salt, etc.), the viscosity is not affected. Under the condition of high salt concentration, even in the saturated salt solution is still maintaining its solubility and not settling and flocculation; its viscosity is almost not affected.
8.The stability of the enzyme reaction
Xanthan gum stability of double helix structure makes it have strong antioxidant and enzymatic hydrolysis resistance, many enzymes such as protease, amylase, cellulase and hemicellulase enzymes can make xanthan degradation.
Advantages:
1. High viscosity and solubility in water
2. Pseudoplastic rheology characteristics
3. Good stability of temperature, PH value
4. With acid, alkali, salt, enzyme, surfactants, preservatives, antioxidants and other thickener coexist, has the stable compatibility
5. With guar gum, locust bean gum and other glues, has obvious effect.
Storage: Stored in a cool, dry, ventilated place.
Package: packed in craft paper bags or carton drums of 25kgs net weight each, with PE inner. On pallets, 20MT loaded in 1x 20"FCL
Shelf life: 2 years if properly stored
Notice: Avoid light, water and other outside pollution
