Safety, beneficial and technological properties of Enterococcus faecium isolated from Brazilian cheeses

This study aimed to characterize the safety and technological properties of Enterococcus faecium strains isolated from Brazilian Coalho cheeses. High levels of co-aggregation were observed between Enterococcus faecium strains EM485 and EM925 and both Escherichia coli and Clostridium perfringens . Bo...

Descripción completa

Detalles Bibliográficos
Autores principales: dos Santos, Karina Maria Olbrich, Vieira, Antônio Diogo Silva, Salles, Hévila Oliveira, Oliveira, Jacqueline da Silva, Rocha, Cíntia Renata Costa, Borges, Maria de Fátima, Bruno, Laura Maria, Franco, Bernadette Dora Gombossy de Melo, Todorov, Svetoslav Dimitrov
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Microbiologia 2015
Materias:
Food Microbiology
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4512068/
https://www.ncbi.nlm.nih.gov/pubmed/26221113
http://dx.doi.org/10.1590/S1517-838246120131245
Descripción
Sumario:This study aimed to characterize the safety and technological properties of Enterococcus faecium strains isolated from Brazilian Coalho cheeses. High levels of co-aggregation were observed between Enterococcus faecium strains EM485 and EM925 and both Escherichia coli and Clostridium perfringens . Both strains presented low levels of hydrophobicity. E. faecium EM485 and EM925 were both able to grow in the presence of 0.5% of the sodium salts of taurocholic acid (TC), taurodeoxycholic acid (TDC), glycocholic acid (GC), and glycodeoxycholic acid (GDC), although they showed the ability to deconjugate only GDC and TDC. Both strains showed good survival when exposed to conditions simulating the gastro intestinal tract (GIT). When tested for the presence of virulence genes, only tyrosine decarboxylase and vancomycin B generated positive PCR results.

Ejemplares similares