Collagen is a biopolymer, the main component in animal connective tissues, and is also the most abundant and widely distributed functional protein in mammals, accounting for 25% to 30% of the total protein, and some organisms even up to more than 80% .
Animal tissue derived from livestock and poultry is the main way for people to obtain natural collagen and collagen peptides. However, due to related animal diseases and certain religious beliefs, the use of terrestrial mammal collagen and its products is restricted, and it is gradually turning to the ocean Biological development. The European Food Safety Authority (EFSA) has confirmed that even collagen derived from animal bones is not likely to be infected with mad cow disease and other related diseases.
Due to the differences in amino acid composition and cross-linking degree, the rich collagen contained in aquatic animals, especially their processing wastes-skin, bone, scales, has many advantages that livestock collagen does not have, and it also comes from marine animals Collagen is superior to terrestrial collagen in some aspects, such as having low antigenicity and hypoallergenic properties. Therefore, aquatic collagen may gradually replace terrestrial collagen.
There are many types of collagen, the common types are typeI, typeII, typeIII, typeV and type XI.
Collagen is widely used in food, medicine, tissue engineering, cosmetics and other fields due to its good biocompatibility, biodegradability and bioactivity.
