The difference between gum and resin
Many trees secrete their body fluids to protect and heal wounds when their bark is injured. This body fluid can be divided into two broad categories, one is hydrophilic colloid, such as Arabia gum, gum and many other gum. The other one is hydrophobic colloid gum, such as dammar resin and rosin. The former is usually acidic macromolecules, polysaccharides, soluble in or swelling in water; while the latter is a high polymer, generally soluble only in organic solvents.
The viscosity of the solution is low and can be mixed with more than 50% of the solution, and the adhesive property is independent of viscosity. The world produces an annual output of 50 thousand tons, 90% of which are produced in Sultan. It is the most widely used gum in industry. It is used in food, medicine, cosmetics, pigment, ink, printing, textile and so on. It is also used in the inner wall of oil depot to prevent leakage. The tragacanth. Is tragacanth gum (Astragalus gummifera) and other tree secretions. In gum, the viscosity of its solution is highest, mainly used in food, medicine, and cosmetics. The peach. Made from the hydrolysis of the secretion of peach and used mainly in water color, pigment, and printing. Larch, Arabia, galactomannan. A low viscosity, highly dispersible gum obtained from the water or dilute alkaline solution of larch wood. It is mainly used in medicine, food and so on.
Commonly used gums are: Arabia gum. Mainly Arabia gum Senegal (Acacia tree) secretions. Pale yellow to tan solid, brittle and lustrous.
