1, edible gelatin is an important ingredient and additive in the food industry, often used as a gelling agent, stabilizer, emulsifier, thickener and clarifier, etc. applied to the production of meat products, cakes, ice cream, beer, fruit juice and so on.

2, biofilm materials. The most studied gelatin-based membrane materials at home and abroad is mainly chitosan - gelatin **** mixed membrane, gelatin - silk **** mixed membrane, polylactic acid - gelatin **** mixed membrane, as well as polyvinyl alcohol - gelatin **** mixed membrane, etc., these mixed materials greatly improve the physicochemical properties of gelatin, so that the gelatin-based polymer membrane materials are more functional.

3, medical fiber. The use of other composite materials and gelatin **** blended spinning silk to improve the mechanical properties of gelatin-based medical fiber materials.

4, tissue repair and replacement. Gelatin-based composites used as tissue engineering scaffolding materials and signal molecular carriers is one of the current biomaterials research hotspots. Gelatin solution after crosslinking to form a hydrogel, in which the water for the pore causing agent, freeze-dried to form porous scaffold materials, and can be changed by changing the freezing parameters to adjust the pore rate and pore size. Therefore, ideal gelatin-based tissue engineering materials can be designed according to different tissue repair requirements.