Gelatin is extracted from collagen and is a high molecular weight protein composed of 18 amino acids. Bovine hide , bones and fish scales are normally used for the production of the gelatin.
Gelatin can absorb 5-10 times of water and if heated,it enters a sol state. Upon cooling, it enters a gel state.
Because of its special properties, gelatin is used in making pharmaceutical capsules, jelly,industrial adhesives. Also gelatin is widely used in other applications.
At room temperature, gelatin can encapsulate material, block oxidation, and keep out moisture.It also dissolves and is absorbed easily within the body which is why gelatin is already in wide use in the medical field.
Currently, hard, soft, micro, and many other kinds of capsules are available in addition to gelatin's use in suppositories, hemostatics, tablets, pills, and medicinal compresses.
Gelatin will continue to find diverse applications in the future. Most gelatin being used in soft capsules has a gel strength of 150-200 Bloom and a viscosity of 35-45 mps,while gelatin for hard capsules has a gel strength of 250 Bloom and a viscosity of 45-48 mps.