Growth and survival of Escherichia coli O157: H7 in meat, poultry and vegetables mixed with different concentrations of mayonnaise.
Rev Biol Trop
; 49(3-4): 1207-12, 2001.
Article
en En
| MEDLINE
| ID: mdl-12189803
ABSTRACT
In the last 20 years Escherichia coli O157 H7 has emerged as a new pathogen, causing worldwide disease, death and economic loss. Different studies have revealed important survival characteristics of this pathogen, although there are divergent criteria about its ability to survive in various mayonnaise formulations. We studied the effect of different mayonnaise concentrations (0%, 18%, 37% and 56%) (weight/weight) over the survival of the bacterium in common foods from a neotropical environment (Costa Rica). High [10(7)-10(8) Colony Forming Units (CFU)/ml] and low E. coli populations (10(4)-10(6) CFU/ml) were inoculated, (three replicates) in meat, chopped cabbage and poultry, and mixed with commercial mayonnaise to obtain the concentrations specified. They were incubated at 12 degrees C for 24, 48 and 72 hr. The E. coli O157 H7 enumeration was done according to a standard methodology. Populations of E. coli O157 H7 showed an increasing trend during the first incubation period (48 hr), in all the preparations, regardless of the fat concentration used. Our data indicate that E. coli O157 H7 is capable of surviving and growing in meat, cabbage and poultry mixed with mayonnaise, independently of its concentration.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Brassica
/
Escherichia coli O157
/
Microbiología de Alimentos
/
Carne
Límite:
Animals
Idioma:
En
Revista:
Rev Biol Trop
Año:
2001
Tipo del documento:
Article
País de afiliación:
Costa Rica