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Acacia Gum Powder IA. senegIII is a pale white to orange-brown solid, which breaks with a glassy fracture". The best grades an in the form of whole spheroidal tears of varying size with a matt surface texture. When ground. the pieces are paler and have a glassy appearance. Acacia Gum Powder seyan is more brittle than the hard tears of Acacia Gum. Acacia Gum is also available commercially in the fonn of white to yellowish·wmte flakes. granules. powder. roller dried. or spray·dried material.
Acacia Gum / Gum arabic is a dried exudate obtained from the stems and branches of Acacia senegal (L.) Willdenow or Acacia seyal (fam. Leguminosae)Acacia Gum / Gum arabic consists mainly of high-molecular weight polysaccharides and their calcium, magnesium and potassium salts, which on hydrolysis yield arabinose, galactose, rhamnose and glucuronic acid. Items of commerce may contain extraneous materials such as sand and pieces of bark, which must be removed before use in food.
Acacia Gum / Gum Arabic is utilized in the food industry to set flavours, as an emulsifying agent, to prevent the crystallization of sugar in confectionary and as a stabilizing agent in frozen dairy products. It is also useful in the baking industry because of its viscous and adhesive properties, which are used to stabilize mousses, and as a turbidity agent in beer. Acacia Gum / Gum Arabic has found a new range of applications in the dietetic food and health sub·sectors because of its high fibre content. In the pharmaceutical industry. Acacia Gum / Gum Arabic is utilized to stabilize emulsions, as a binding agent and for coating medications. It is also included in the mixtures for eye drops and cough syrups. In the cosmetic field, it is used as an adhesive when making face powders and masks but also used in making lotions creamy and smooth.
In the chemical industry, Acacia Gum /Gum Arabic is utilized as glue, as a colloid protector and as a preserving agent for inks. It is also used to sensitize lithographic plates, to stiffen cloth. coat certain paper types and for coating metals to prevent corrosion. It is equally utilized in manufacturing matchsticks and ceramics.
Functional Properties of Acacia Gum
Acacia Gum / Gum Arabic readily dissolves in water to give clear solutions ranging in colour from very pale yellow to orange·brown and with a pH of - 4.5. The highly branched structure of Acacia senega/gum gives rise to compact molecules with a relatively small hydrodynamic volume and as a consequence gum solutions become viscous only at high concentrations. 30% gum Acacia solutions have a lower viscosity than 1 % xanthan gum and sodium carboxymethylcellulose at low shear rates. In addition.
Acacia Gum is Newtonian in behaviour with viscosity being shear rate independent.The other major functional characteristic of gum Arabic is its ability to act as an emulsifier for essential oils and flavours. It is now known that the protein·rich high molecular mass component adsorbs preferentially onto the surface of the oil droplets. It is envisaged that the hydrophobic polypeptide chains adsorb and anchor the molecules to the surface while the carbohydrate blocks inhibit flocculation and coalescence through electrostatic and steric repulsions. Since only part of the gum is involved in the emulsification process, the concentration required to produce an emulsion is much higher than for pure proteins. For example, in order to produce a 20% orange oil emulsion then Acacia concentrations of - 12% are required. Once formed the emulsions can remain stable for long periods of time.
Transport Information
| Marine Pollutant | : No |
| ADR/RID | : Not Dangerous Goods |
| IMDG | : Not Dangerous Goods |
| Website | : Not Dangerous Goods |
Gum Arabic
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