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Feather degradation by strains of Bacillus isolated from decomposing feathers
Swetlana, Nagal; Jain, P. C.
  • Swetlana, Nagal; Department of Applied Microbiology and Biotechnology, Dr. H. S. Gour Vishwavidyalaya. IN
  • Jain, P. C; Department of Applied Microbiology and Biotechnology, Dr. H. S. Gour Vishwavidyalaya. IN
Braz. j. microbiol ; 41(1): 196-200, Jan.-Mar. 2010. tab
Artículo en Inglés | LILACS | ID: lil-531752
ABSTRACT
Feather waste is generated in large amounts as a by-product of commercial poultry processing. This residue is almost pure keratin, which is not easily degradable by common proteolytic enzymes. Eight strains of Bacillus, isolated from decomposing feathers were tested for the hydrolysis of feather wastes in the laboratory. Among these strains, Bacillus cereus KB043 was the best feather degrading organism when grown on basal medium containing 1 percent hen feather as sole source of carbon and nitrogen. It caused 78.16 ± 0.4 percent degradation with a significant release of soluble protein (1206.15 ± 14.7 µg mL-1) and cysteine (20.63 ± 0.4 µg mL-1) in the cultivation fluid. The strain also showed the highest level of keratinase activity (39.10 ± 0.4 U mL-1). These data indicates that the Bacillus cereus KB043 could be useful in management of poultry wastes.
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Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Péptido Hidrolasas / Bacillus / Bacillus cereus / Activación Enzimática / Plumas / Queratinas Límite: Animales Idioma: Inglés Revista: Braz. j. microbiol Asunto de la revista: Microbiologia Año: 2010 Tipo del documento: Artículo País de afiliación: India Institución/País de afiliación: Department of Applied Microbiology and Biotechnology, Dr/IN

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Texto completo: Disponible Índice: LILACS (Américas) Asunto principal: Péptido Hidrolasas / Bacillus / Bacillus cereus / Activación Enzimática / Plumas / Queratinas Límite: Animales Idioma: Inglés Revista: Braz. j. microbiol Asunto de la revista: Microbiologia Año: 2010 Tipo del documento: Artículo País de afiliación: India Institución/País de afiliación: Department of Applied Microbiology and Biotechnology, Dr/IN