Open AccessJournal Article
Keratinases: emerging trends in production and applications as novel multifunctional biocatalysts
I. A. Adelere,Agbaje Lateef +1 more
TLDR
Techniques such as immobilization, optimization strategies, proteinengineering and DNA recombinant technology have been used to improve keratinases activities and stabilities therebywidening the scope for commercialization.Abstract:
Keratinases are proteolytic enzymes capable of degrading rigid and insoluble keratinous proteins present in skinand appendages. They are produced in the keratinous substrates such as feather, hair, wool, nail, horn and hoof bymicroorganisms. They are mostly serine proteases, although there are very few reports about metallokeratinases.Keratinases are active over wide range of conditions, and are useful in biorecycling of keratin wastes into feed andfertilizers. They also have potential applications in leather, cosmetic, textile, biomedical and detergent industries. Thepromising applications of keratinases also extend to energy generation and green synthesis of nanoparticles. Owingto their ubiquitous biotechnological applications, techniques such as immobilization, optimization strategies, proteinengineering and DNA recombinant technology have been used to improve their activities and stabilities therebywidening the scope for commercialization. This review chronicles recent trends in the production and multi-functionalapplications of keratinases.read more
Citations
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Journal ArticleDOI
Citric Acid Production by Aspergillus niger from Agro-Industrial By-Products: Molasses and Chicken Feather Peptone
TL;DR: In this article, the authors investigated the influence of chicken feather peptone (CFP) for citric acid production in Aspergillus niger and found that CFP increased the production of the acid.
Journal ArticleDOI
Immobilization of keratinase on chitosan grafted-β-cyclodextrin for the improvement of the enzyme properties and application of free keratinase in the textile industry
TL;DR: In the preliminary experiments it was found that free keratinase have the potential to improve the quality of woollen fabrics and suitable for application in textile industries.
Journal ArticleDOI
Microbial production and industrial applications of keratinases: an overview
Imania Ghaffar,Aqsa Imtiaz,Ali Hussain,Arshad Javid,Faiza Jabeen,Muhammad Akmal,Javed Iqbal Qazi +6 more
TL;DR: This review summarizes the potential utility of some bacterial and fungal species for the production of keratinase using a variety of Keratinaceous wastes as growth substrates and examines the application of microbial keratinases in waste management; animal feed, detergent, and fertilizer manufacturing; and leather, cosmetic, and pharmaceutical industries.
Book ChapterDOI
Keratin Waste: The Biodegradable Polymers
TL;DR: Keratin is the major structural fibrous protein belonging to the large family of structural proteins to form hair, wool, feathers, nails, and horns of many kinds of animals and has a high concentration of cysteine, 7-20% of the total amino acid residues, that form interand intramolecular disulfide bonds as discussed by the authors.
Journal ArticleDOI
The tale of a versatile enzyme: Molecular insights into keratinase for its industrial dissemination.
TL;DR: This critical review systematically summarizes the application potential of keratinase, and in particular certain newly discovered catalytic capabilities, and reveals that the engineering of protein domains such as signal peptides and pro-peptides has become an important strategy to increase production of Keratinases.
References
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Journal ArticleDOI
Microbial keratinases and their prospective applications: an overview.
Rani Gupta,Priya Ramnani +1 more
TL;DR: Keratinases stand out among proteases since they attack the keratin residues and hence find application in developing cost-effective feather by-products for feed and fertilizers and their prospective application in the challenging field of prion degradation would revolutionize the protease world in the near future.
Journal ArticleDOI
A review: Potentials for biotechnological applications of keratin-degrading microorganisms and their enzymes for nutritional improvement of feathers and other keratins as livestock feed resources
TL;DR: Supporting evidence of a nutritional (amino acid) upgrading sequel to diverse microbial treatments of feathers, and positive results obtained from growth studies in rats and chicks have been presented.
Journal ArticleDOI
A Review of Keratin-Based Biomaterials for Biomedical Applications
Jillian G. Rouse,Mark Van Dyke +1 more
TL;DR: The history of keratin research and the advancement of Keratin biomaterials for biomedical applications are discussed.
Journal ArticleDOI
Biochemical features of microbial keratinases and their production and applications.
TL;DR: Keratinases are exciting proteolytic enzymes that display the capability to degrade the insoluble protein keratin and their use in biomass conversion into biofuels may address the increasing concern on energy conservation and recycling.
Journal ArticleDOI
Production, characterization and application of keratinase from Streptomyces gulbargensis.
TL;DR: Results obtained showed that newly isolated strain S. gulbargensis could be a useful in biotechnology in terms of valorization of keratin-containing wastes or in the leather industry.