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Valorization of Keratin-Rich Waste: Extraction, Characterization, and Biomedical Applications.
Sourav Mandal1, Kamalakanta Ray1, Indranil Chatterjee1
1Department of Pharmaceutical Technology, JIS University, 81, Nilgunj Road, Agarpara, Kolkata, 700109, India.
Current Protein & Peptide Science
|April 3, 2026
Summary
Keratin waste, abundant in industries, presents environmental challenges. This review explores its valorization for biomedical applications, focusing on sustainable extraction and future therapeutic potential.
Area of Science:
- Biomaterials Science
- Environmental Science
- Biotechnology
Background:
- Keratin is a valuable structural biopolymer found in animal-derived waste.
- Industrial processes generate millions of tons of keratin waste annually, posing environmental concerns due to poor biodegradability.
- Current disposal methods are often unsustainable, necessitating alternative waste management strategies.
Purpose of the Study:
- To critically evaluate traditional, chemical, and industrial keratin extraction methods based on efficiency, scalability, and sustainability.
- To highlight the potential of keratin-derived biomaterials in various biomedical applications.
- To identify challenges and propose future research directions for keratin exploitation within a circular bioeconomy.
Main Methods:
- Comprehensive literature review of keratin extraction techniques (traditional, chemical, industrial).
- Critical analysis of extraction methods regarding efficiency, scalability, and environmental impact.
- Evaluation of current and potential biomedical applications of keratin.
- Identification of challenges (e.g., immunogenicity, reproducibility, regulatory issues) and future research needs.
Main Results:
- Keratin waste offers a sustainable source for biomaterial development.
- Various extraction methods have different efficiencies, scalability, and sustainability profiles.
- Keratin demonstrates significant potential in wound healing, tissue engineering, drug delivery, cosmetics, and ecological remediation.
- Key challenges include immunogenicity, reproducibility, and regulatory approval for keratin-based products.
Conclusions:
- Valorizing keratin waste through sustainable extraction is crucial for environmental management and biomedical innovation.
- Further research is needed to overcome challenges and optimize keratin-based biomaterials for next-generation therapeutic applications.
- Integrating keratin waste management into a circular bioeconomy framework offers a sustainable pathway for its exploitation.
