1, gelatin is by collagen moderate hydrolysis and thermal denaturation of the product, the production of gelatin raw materials are mainly animal skin, bone and tannery waste, etc., the market common gelatin more cowhide cattle bone or pig skin as raw material preparation, in recent years due to the emergence of the Mad Cow Disease and Foot and Mouth Disease, many gelatin manufacturers began to turn to fish skin, fish scales and chicken skin as raw material for the preparation of gelatin.

2, gelatin production methods are mainly alkali, acid, enzyme method. Alkali and acid method is the traditional production method, the production cycle is generally longer than 15 days, the discharge of waste liquid on the environment is more polluted. Due to the enzyme method of gelatin production costs are lower, the product safety is high, in the field of medicine, food and so on gradually replace the acid method and alkaline method of gelatin production.

3, gelatin is a macromolecule of hydrophilic colloid, is the product of partial hydrolysis of collagen. According to its use can be divided into photographic gelatin, edible gelatin and industrial gelatin. According to the different uses, the quality requirements of gelatin are not the same, used as a binder, the requirements of adhesive strength; used in photography, food, medicine and other fields, the purity of the product is emphasized. According to the different quality can be divided into high-grade gelatin, low-grade gelatin, bone glue, of which high-grade gelatin referred to as gelatin, known as Gelatin, low-grade gelatin and bone glue is called Glue.