Journal ArticleDOI
Keratinase production and biodegradation of whole chicken feather keratin by a newly isolated bacterium under submerged fermentation.
Dipak Kumar Sahoo,Arpan Das,Hrudayanath Thatoi,Keshab Chandra Mondal,Pradeep Kumar Das Mohapatra +4 more
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TLDR
The manuscript first time describes B. weihenstephanensis PKD 5-mediated keratinase production under submerged fermentation and whole chicken feather biodegradation.Abstract:
A new feather-degrading bacterium PKD 5 was isolated from feather dumping soil and identified as Bacillus weihenstephanensis based on morphological and physiochemical characteristics as well as 16S rRNA gene analysis. Extracellular keratinase was produced during submerged aerobic cultivation in a medium containing chicken feather as sole carbon and energy source and supplemented with salt solutions (NaCl 5.0, MgSO4 1.0, K2HPO4 1.0, (NH4)2SO4, 2.0 g/l). The optimal conditions for keratinase production include initial pH of 7.0, inoculum size of 2% (v/v), and cultivation at 40 °C. The maximum keratinase production and keratinolytic activity of PKD 5 was achieved after 7 days of fermentation under shaking condition (120 rpm). The enzyme has found application in developing cost-effective feather by-products for feeds and fertilizers. The manuscript first time describes B. weihenstephanensis PKD 5-mediated keratinase production under submerged fermentation and whole chicken feather biodegradation.read more
Citations
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Journal ArticleDOI
Purification and biochemical characterization of a detergent-stable keratinase from a newly thermophilic actinomycete Actinomadura keratinilytica strain Cpt29 isolated from poultry compost.
Amina Habbeche,Boudjema Saoudi,Bassem Jaouadi,Soumaya Haberra,Bilal Kerouaz,Mokhtar Boudelaa,Abdelmalek Badis,Ali Ladjama +7 more
TL;DR: The ability of the A. keratinilytica strain Cpt29 to grow and produce substantial levels of keratinase using feather as a substrate could open new promising opportunities for the valorization of keratinolytic wastes and reduction of its impacts on the environment.
Journal ArticleDOI
Feather keratin hydrolysates obtained from microbial keratinases: effect on hair fiber.
Ana Lúcia Vazquez Villa,Márcia Regina Senrra Aragão,Elisabete Pereira dos Santos,Ana Maria Mazotto,Russolina B. Zingali,Edilma Paraguai de Souza,Alane Beatriz Vermelho +6 more
TL;DR: These results show that the enzymatic method to produce keratin peptides for hair care products is an attractive and eco- friendly method with a great potential in the cosmetic industry.
Journal ArticleDOI
Exploitation of chicken feather waste as a plant growth promoting agent using keratinase producing novel isolate Paenibacillus woosongensis TKB2
Tanmay Paul,Suman Kumar Halder,Arpan Das,Surojit Bera,Chiranjit Maity,Arpita Mandal,Partha Sarathi Das,Pradeep Kumar Das Mohapatra,Bikas R. Pati,Keshab Chandra Mondal +9 more
TL;DR: The filter sterilized fermented hydrolysate has the ability to promote significantly the germination of seeds and growth of Bengal gram and increased soil fertility by altering N, P, K and the C/N ratio by 1.2 fold.
Journal ArticleDOI
Bacillus safensis LAU 13: a new source of keratinase and its multi-functional biocatalytic applications
TL;DR: A newly isolated bacterium identified as Bacillus safensis based on biochemical tests and 16S rRNA analysis and its mutant variant created by exposure to ultraviolet radiation at 254 nm were investigated for keratinolytic activity as mentioned in this paper.
ARTICLE; AGRICULTURE AND ENVIRONMENTAL BIOTECHNOLOGY Bacillus safensis LAU 13: a new source of keratinase and its multi-functional biocatalytic applications
TL;DR: The obtained results showed an improvement in the properties of the mutant strain for use of the micro-organism or its enzyme as biocatalysts and high substrate specificity for feathers, but low specificity for human and bovine hairs.
References
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Journal ArticleDOI
The CLUSTAL_X windows interface: flexible strategies for multiple sequence alignment aided by quality analysis tools.
TL;DR: ClUSTAL X is a new windows interface for the widely-used progressive multiple sequence alignment program CLUSTAL W, providing an integrated system for performing multiple sequence and profile alignments and analysing the results.
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
Isolation, identification, and characterization of a feather-degrading bacterium.
TL;DR: A feather-degrading culture was enriched with isolates from a poultry waste digestor and adapted to grow with feathers as its primary source of carbon, sulfur, and energy, indicating a potential biotechnique for degradation and utilization of feather keratin.
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