HOME > EDICIONES > Año 1998, Volumen 48 - Número 1
Trabajos de Investigación
Presencia de coliformes totales, Escherichia coli y Listeria sp. en fórmulas enterales
Ma. Laura Arias, Rafael Monge, Julia Rodríguez
Facultad de Microbiología, Universidad de Costa Rica, Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud.
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SUMMARY
Presence of total coliforms, Escherichia coli and Listeria sp. in enteral formulas
The presence of total coliforms, Escherichia coli and Listeria sp. was evaluated in 65 samples of enteral nutrition formulas. In more than the 75% of the samples made up from cooked vegetables, fruits or meat broth, the score level of total coliforms was of 104 UFC/g. In 12-31 % of the different enteral food formula, E. coli was isolated inlevels ranging form 3.0 x 102 to 2.1x 104 UFC/g. Enteral nutrition formulas made out of fruits and those e1aborated with meal broth presented this agent more frequently and in bigger quantities. Listeria sp. was isolated in 17% of the fruit preparations and in enteral formulas made with milk. L. grayi, L welshimeri and L. innocua were the species found.
Key words: Total coliforms, Escherichia coli, Listeria sp., enteral nutrition.
Recibido: 01/04/1997
Aceptado: 30/10/1997
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PRIVACIDAD | ACCESIBILIDAD
ALAN-VE ISSN 0004-0622 - Depósito Legal: pp 199602DF83
Sociedad Latinoamericana de Nutrición
Producción editorial en Venezuela: Capítulo Venezolano - RIF: J-30843129-0
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