From the collagen of animals, through partial acid hydrolysis (type A), or partial alkaline hydrolysis (type B), and even through enzymatic hydrolysis, purification and obtaining of collagen.
Gelatin (Gelatin) is a hydrolyzed product of collagen, is a fat-free high protein, and does not contain cholesterol, is a natural nutritious food thickener. Consumption will neither make people fat, nor lead to a decline in physical strength. Gelatin is also a strong protective colloid, emulsifying force, after entering the stomach can inhibit milk, soy milk and other proteins due to the role of gastric acid caused by the cohesion, thus facilitating the digestion of food
Composition of gelatin proteins contain 18 kinds of amino acids, of which 7 kinds of essential for the human body. In addition to water and inorganic salts below 16%, the protein content of gelatin accounts for more than 82%, which is an ideal protein source. The finished product of gelatin is colorless or light yellow transparent flakes or particles. Gelatin is insoluble in cold water, but can slowly absorb water to expand and soften, gelatin can absorb 5-10 times its weight in water. According to different sources, the physical properties of gelatin also has a big difference, which is better to pig skin gelatin properties, high transparency, plasticity.
Gelatin can be dissolved in hot water, the formation of heat reversible gel, it has excellent physical properties, such as jelly power, affinity, high dispersibility, low viscosity characteristics, dispersion stability, water retention. Coating, toughness and reversibility, etc. Therefore, gelatin is an important food additive, such as as a jelly agent, stabilizer for food. Thickener, foaming agent. Emulsifier, dispersant, clarifier, etc., is widely used.
Edible gelatin can be used for medical soft and hard capsules, surgical dressings, hemostatic sponges, meat jelly, food additives, canned goods, candy, sorbet, ham sausage, jelly, soda suspension, checking agent, starch, ice cream and other food industries, etc., the implementation of the national standard GB6783-94.
Medicinal gelatin is mainly used as raw materials for soft and hard capsules, tablet icing.
Industrial gelatin is mainly used for plywood, gauze, gravel, printing, adhesives, etc..