Extraction, Structural and Functional Properties of Silk Sericin Biopolymer from Bombyx mori Silk Cocoon Waste

Abstract

In the present investigation environment-friendly effective technique was used for silk sericin extraction from waste silk cocoon. Silk sericin powder was extracted from an only boiled water solution of silk cocoons without using any chemicals. Extracted sericin powder was characterized by UV spectrophotometer, Fourier transform infrared (FTIR) and Thermogravimetric Analysis (TGA). The crystalline index and crystallite diameter of silk sericin were investigated by X-ray diffraction (XRD). The crystalline index and crystallite diameters were found 39.66% and 2.179 nm respectively for silk sericin. The functional properties in terms of antimicrobial activity and antioxidant property were also evaluated. The antioxidant activity was evaluated by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radicals. The results showed that silk sericin had a strong scavenging capacity for DPPH radicals. Extraction, Structural and Functional Properties of Silk Sericin Biopolymer from Bombyx mori Silk Cocoon Waste Joykrisna Saha, Md. Ibrahim H. Mondal*, Md. Rezaul Karim Sheikh and Md. Ahsan Habib Department of Applied Chemistry and Chemical Engineering, Polymer and Textile Research Lab, Rajshahi University, Rajshahi, Bangladesh *Corresponding author: Ibrahim H. Mondal, Polymer and Textile Research Lab., Department of Applied Chemistry and Chemical Engineering, Rajshahi University, Rajshahi, Bangladesh, E-mail: mihmondal@gmail.com Received December 16, 2018; Accepted January 29, 2019; Published February 08, 2019 Citation: Saha J, Mondal MIH, Sheikh MRK, Habib MA (2019) Extraction, Structural and Functional Properties of Silk Sericin Biopolymer from Bombyx mori Silk Cocoon Waste. J Textile Sci Eng 9: 390. doi: 10.4172/2165-8064.1000390 Copyright: © 2019 Saha J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.