Potential use of wool-associated Bacillus species for biodegradation of keratinous materials

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

A. Catarina Queiroga (Autor) Outra; Manuela E. Pintado (Autor) Outra; F. Xavier Malcata (Autor) FEUP

Revista

Título: International Biodeterioration and Biodegradation

Vol. 70 Nº 5

Páginas: 60-65

ISSN: 0964-8305

Editora: Elsevier

Indexação

ISI Web of Knowledge - 13 Citações

ISI Web of Science

Scopus - 21 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-002-AHZ

DOI: 10.1016/j.ibiod.2011.12.013

Abstract (EN): Five wool-degrading bacterial strains were selected from a set of 115 isolates from a less conventional source, i.e., the wool of Portuguese Merino sheep, based on their promising keratinolytic abilities. All selected strains belong to the genus Bacillus, probably Bacillus subtilis/licheniformis, according to 16S rRNA sequencing. They were able to grow on and hydrolyse feathers and wool (in both native and milled forms), and human hair and nails to a lesser extent. The maximum keratinase activity was recorded on milled chicken feathers. Biodegradation of such keratin-rich matrices increased the amount of soluble proteins in the fermentation broth and implied the action of extracellular enzymes from those adventitious microorganisms. Therefore, such novel strains have a potential for effective use in solid waste management strategies encompassing keratin-rich materials based on submerged fermentation. Concomitantly, the nutritional value of the broth may be improved for eventual formulation of animal feed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6