Sericin is a protein created by Bombyx mori (silkworms) in the production of silk. Silk is a fibre produced by the silkworm in production of its cocoon. It consists mainly of two proteins, fibroin and sericin.

How is sericin obtained?

Sericin was extracted by using water under pressure in an autoclave (121 °C for 30 min, and a liquor ratio 1:30 (w/v)), and dehydrated by freeze-drying.

What type of protein is sericin?

Silk sericin is a natural macromolecular protein derived from silkworm, Bombyx mori and constitutes 25-30% of silk protein. It envelops the fibroin fibres with successive sticky layers that help in the formation of cocoon.