Collagen is widely used in various fields, such as medical and health, tissue engineering, food, hairdressing, etc., because of its good biological compatibility, decomposability and low immunogenic idiosyncrasy. 胶原蛋白具有良好的生物相容性、低免疫原性和可生物降解性等优良特性,因而在生物医药、组织工程、食品、化妆品等领域有着广泛的应用。