FIBROIN The protein part of a raw silk filament. The silk secreted by the silkworm is made up of a protein substance, fibroin, encased in a gum, sericin. Related Related Articles: Glossary: COCOONGlossary: DEGREASINGGlossary: GUM SERICINGlossary: SERCINGlossary: SILK By textilesofindia|2018-08-26T12:46:50+00:00August 26th, 2018|Comments Off on FIBROIN Share This Article facebooktwitterlinkedinredditwhatsapppinterestvkEmail About the Author: textilesofindia An initiative to share the treasures of Indian textiles to the globe 🌏