Efficacy of bovicin HC5 and nisin combination against Listeria monocytogenes and Staphylococcus aureus in fresh cheese |
| |
| Authors: | Natan de J. Pimentel‐Filho Hilário C. Mantovani Antônio F. de Carvalho Ricardo S. Dias Maria Cristina D. Vanetti |
| |
| Affiliation: | 1. Departamento de Microbiologia, Universidade Federal de Vi?osa, , Vi?osa, Minas Gerais, 36570‐000 Brazil;2. Departamento de Ciência e Tecnologia de Alimentos, Universidade Federal de Vi?osa, , Vi?osa, Minas Gerais, 36570‐000 Brazil;3. Laboratorio de Enterotoxinas Estafilococicas, Fundac?o Ezequiel Dias, , 80 Gameleira, Belo Horizonte – Minas Gerais 30510‐010, Brazil |
| |
| Abstract: | Fresh and soft cheeses provide a suitable medium for the growth of many microorganisms and have been frequently associated with foodborne diseases. This study aimed to evaluate the effects of the bacteriocins bovicin HC5 and nisin on Listeria monocytogenes and Staphylococcus aureus in Minas Frescal cheese, a traditional Brazilian fresh product. The cheese was inoculated with 104 CFU g?1 of both pathogens, and the bacteriocins were added at 600 AU g?1 of each one. After 9 days of storage at 4 °C, L. monocytogenes Scott A were not detected in 25 g samples. Although the bacteriocins reduced the population of S. aureus ATCC 6538, increasing numbers were detected after 15 days of storage at 4 °C. Staphylococcal enterotoxin C was detected in cheeses added of bacteriocins and stored under abusive temperature of 15 °C. The results demonstrate the potential application of combination of bovicin HC5 and nisin in controlling the pathogens growth assessed in Minas Frescal cheese. |
| |
| Keywords: | Bacteriocin bovicin HC5 food pathogens fresh cheese nisin |
|
|
