This substance, also known as arabic gum, acacia gum, gum arabic or arabic gum (E414), is a natural polysaccharide produced from Acacia senegal and Acacia seyal trees in tropical Africa. If the bark of the tree is cut, it produces gum to close the gaps and this process takes about 3-8 weeks.
Senegal acacia is a chemically carbohydrate polymer and its energy value is less than half the energy value of starch and maltodextrin.
More specifically, the arabinogalactan is a variable mixture of oligosaccharides, polysaccharides and glycoproteins. Depending on the source, the glycan components contain L-arabinose (D-galactose) or D-galactose (L-arabinose) bound to D-galactose (Acacia seyal). The gum obtained from Acacia seyal contains more 4-O-methyl-D-glucuronic acid but less L-rhamnose and unmodified D-glucuronic acid than Acacia senegal.
Average content of Senegal acacia
Sugar content after hydrolysis
Galactose % 35 – 45
Arabinose% 25 – 45
Rhamnosus% 4 – 13
Glucuronic Acid % 6 – 15
Average molecular weight 350 000
PH of the 25% solution 4.4
Intrinsic viscosity 12 ml/g
Brookfield viscosity, 25% solution, 60 rpm 70 cP
Amount of protein% 1- 2
Total ash (Potassium, Calcium & Sodium salts) % 3 – 4
Arabinogalactan (AG) % 89 – 98
Arabinogalaktoprotein (AGP) % 1 – 10
Glycoproteins (GP) % 1’den az
The gum, which contains very little protein in its structure, is one of the most important hydrocolloids with high water solubility and solutions can be prepared up to 50-55% concentrations. This superior property of Senegal acacia is due to its highly branched and complex structure, PH is a 25% solution.
It dissolves well in water (except pH 3.0), is compatible with solids and exhibits a low viscosity at concentrations below 40% in Newtonian fluid foods. Senegal acacia, which is insoluble in oils and many organic solvents, is soluble in aqueous ethanol solutions and has little solubility in glycerol, ethylene glycol, acetate esters and acetate-alcohol mixtures.
A further feature is the gamut, which is capable of delivering solutions of very low viscosity at low concentrations; Due to its effective emulsifying properties, it finds an important use in oil-water emulsions. Prepared emulsions are insensitive to pH and electrolytes and use of stabilizers is required.