Reframing Sericulture Waste: Sericin as a Strategic Resource in the Circular Bioeconomy
N. B. R. Pravallika *
Department of Biosciences and Sericulture, Sri Padmavathi Women’s University, Tirupati, Andhra Pradesh-517502, India.
Indhu Ch
Department of Biosciences and Sericulture, Sri Padmavathi Women’s University, Tirupati, Andhra Pradesh-517502, India.
P. Yuvanthi
Department of Sericulture, University of Agricultural Sciences, GKVK, Bangalore-560065, India.
G. Savitha
Department of Sericulture, University of Agricultural Sciences, GKVK, Bangalore-560065, India.
S. Susikaran
Directorate of Open and Distance Learning, Tamil Nadu Agricultural University, Coimbatore-641041, India.
M. Akash
College of Co-operation, Banking & Management, Kerala Agricultural University, Vellanikara, Thrissur- 680656, India.
*Author to whom correspondence should be addressed.
Abstract
In silk processing, sericin from Bombyx mori cocoons is removed during degumming and usually discarded with wastewater, contributing to organic pollution. However, this protein has gained attention as a valuable biomaterial due to its biocompatibility, biodegradability, antioxidant activity, antimicrobial potential, and moisture-retention ability. This review examines major extraction methods, functional properties, and emerging applications of sericin in biomedical, cosmetic, and food-related fields. It also discusses the role of sericin valorization in supporting circular bioeconomy goals by reducing waste and improving resource efficiency in the sericulture sector. Although promising, large-scale use is still limited by the need for standardized recovery methods, scalable processing, and regulatory validation. Therefore, this review provides a timely and significant contribution to sustainable silk production research.
Keywords: Sericin, biomaterials, waste valorization, circular bioeconomy, sustainable silk processing