Data/hora: 11/06/2024 13:56:48

Provedor de dados: | 58
País: | Brazil
Título: | Biochemical characteristics of typical and atypical Staphylococcus aureus in mastitic milk and environmental samples of Brazilian dairy farms
Autores: | Silva,Wladimir Padilha da; Destro,Maria Teresa; Landgraf,Mariza; Franco,Bernadette D.G.M.
Data: | 2000-06-01
Ano: | 2000
Palavras-chave: | Staphylococcus aureus; Atypical S.aureus; Coagulase; Thermonuclease; API-Staph; Baird-Parker agar; Milk; Mastitis; Environmental samples.
Resumo: | This study reports results on the biochemical characteristics of 274 Staphylococcus aureus strains isolated from mastitic milk, hands of milkmen and milking machines. Features included colony morphology on Baird Parker agar (BPA), catalase, coagulase and thermonuclease tests. API-Staph (bioMérieux, France) was used as reference identification system. 39.4% of the colonies on BPA identified as S.aureus were atypical. They were more frequent in milk samples (94.4%). All S.aureus strains were coagulase positive but intensity of the test varied according to the source: environmental strains were 3+ or 4+, while 17.1% of strains isolated from milk presented only 1+ or 2+ results. The majority of atypical S.aureus strains presented a 4+ coagulase result. 2.2% of S.aureus strains were thermonuclease negative. Sixteen thermonuclease positive and coagulase positive strains were identified as S.hyicus.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200008
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822000000200008
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.31 n.2 2000
Fonte: | info:eu-repo/semantics/openAccess