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Sericin. As the outer coating, Sericin is a protein that enables strands of silk to be bound together into a cocoon. It has important applications in medicine, where it is useful in helping to coagulate and heal wounds, and to reduce the risk of infection Silkworm cocoons—usually smaller than ping-pong balls and dried to a tough texture–contain a key protein identified to be beneficial in skincare, sericin. This material is usually discarded as a waste during the process of silk production, but more and more cosmetic and medical efforts are exploring this underutilized protein. Sericin contains 18 amino acids (most notably serine, aspartic acid, and glycine) and makes up about 20-30 percent of a cocoon’s weight. The sticky, gummy sericin encloses another protein called fibroin.
-for wound and regenerative healing
-for anti-oxidation, anti-bacterium, anti-coagulation materials
-to aid in dispersing UV (ultraviolet) radiation, such as in sunblock
-as a hydrogel to deliver drugs or cells in tissue engineering and regenerative medicine
