Data/hora: 09/06/2024 10:32:22

Provedor de dados: | 58
País: | Brazil
Título: | Antimicrobial activity of Enterococcus faecium FAIR-E 198 against gram-positive pathogens
Autores: | Nascimento,Maristela da Silva do; Moreno,Izildinha; Kuaye,Arnaldo Yoshiteru.
Data: | 2010-03-01
Ano: | 2010
Palavras-chave: | Enterococcus faecium; Bacteriocin; Biopreservation; Gram-positive pathogen.
Resumo: | This study investigated the antimicrobial activity of Enterococcus faecium FAIR-E 198 against Bacillus cereus, Listeria monocytogenes and Staphylococcus aureus. Using the critical-dilution method, the bacteriocin produced by E. faecium FAIR-E 198 inhibited all L. monocytogenes strains evaluated (1,600 to 19,200 AU mL-1). However, none of the B. cereus and S. aureus strains investigated were inhibited. The maximum activity of this bacteriocin (800 AU mL-1) was observed in MRS broth, while the activity in milk was 100 AU mL-1. In the co-cultivation test in milk, B. cereus K1-B041 was reduced to below the detection limit (1.00 log CFU mL-1) after 48 h. E. faecium reduced the initial L. monocytogenes Scott A population by 1 log CFU mL-1 after 3 h at 35ºC. However, the pathogen regained growth, reaching 3.68 log CFU mL-1 after 48 h. E. faecium did not influence the growth of S. aureus ATCC 27154 during the 48 h of co-cultivation. Therefore, it can be concluded that the effectiveness of the antimicrobial activity of E. faecium FAIR-E 198 is strictly related to the species and strain of the target microorganism and to the culture medium.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100013
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822010000100013
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.41 n.1 2010
Fonte: | info:eu-repo/semantics/openAccess