“…3,4 It is mainly found in various tissues and organs of animals, and has attracted much attention due to its high nutritive value, good moisturization, degradability, biocompatibility, and low antigenicity, and has good application value in different industries such as pharmaceuticals, food, and daily chemicals. 5,6 So far, type I collagen is the most abundant structural protein in the human body, accounting for more than 90% of the organic volume of bone, and is also the major component of connective tissues such as skin, tendons, bone, and dentin. 7 Specific cellular functions of collagens are known to be generated by the interaction between specific epitopes displayed on the triple helix and collagen receptors (i.e., integrins, discoidal structural domain receptors, and platelet glycoprotein VI) 8 or other collagen-binding molecules.…”