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Issue 2, 2016
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Extracting keratin from wool by using L-cysteine

K. Wang,a  R. Li,*a  J. H. Ma,a  Y. K. Jiana  and  J. N. Cheb 
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* Corresponding authors

a National Engineering Research Center for Dyeing and Finishing of Textiles, Donghua University, Shanghai 201620, China
E-mail: lirong@dhu.edu.cn

b Apparel Merchandising and Management Department, College of Agriculture, California State Polytechnic University, Pomona, USA

Abstract

Keratin proteins are the major components of hair, feathers, wool and horns and represent an important source of renewable raw materials for many applications. The dissolution of the wool keratin is the first step of reuse of keratin wastes. In this work, L-cysteine was applied to the dissolution of wool keratin for the first time as a reducing agent. The dissolution time was 5 h at 75 °C with 72% dissolubility. XRD, ATR-FTIR and 13C NMR showed that the content of α-helix structures in regenerated wool keratin was decreased compared with natural wool. The content of S–S crosslinkages for regenerated wool keratin significantly decreased and broke about 62% of the S–S crosslinkages in the natural wool, as observed from Raman spectra.

Graphical abstract: Extracting keratin from wool by using l-cysteine

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Publication details

The article was received on 08 Jun 2015, accepted on 31 Jul 2015 and first published on 31 Jul 2015


Article type: Paper
DOI: 10.1039/C5GC01254F
Author version available: Download Author version (PDF)
Citation: Green Chem., 2016,18, 476-481
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    Extracting keratin from wool by using L-cysteine

    K. Wang, R. Li, J. H. Ma, Y. K. Jian and J. N. Che, Green Chem., 2016, 18, 476
    DOI: 10.1039/C5GC01254F

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