As a natural biopolymer material

gelatin, also known as gelatin sponge, is a macromolecular hydrophilic colloid. according to different uses, gelatin can be divided into edible gelatin, photographic gelatin, industrial gelatin, medical gelatin, etc. gelatin is also a protein product that can improve the body’s metabolism and promote bone growth. gelatin materials are animal skins, bones, and tanning industry waste. cow hides, cow bones, and pig skins account for the largest…