title: [Presence of total coliforms, Escherichia coli and Listeria sp. in enteral formulas].
abstract: 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 10(4) UFC/g. In 12-31% of the different enteral food formula, E. coli was isolated in levels ranging form 3.0 x 10(2) to 2.1 x 10(4) UFC/g. Enteral nutrition formulas made out of fruits and those elaborated 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.
authors.affiliation: Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud, Facultad de Microbiología, Universidad de Costa Rica.
authors.forename: M L
authors.initials: ML
authors.lastname: Arias
authors.forename: R
authors.initials: R
authors.lastname: Monge
authors.forename: J
authors.initials: J
authors.lastname: Rodríguez
mesh_terms: D003364:Costa Rica; D004750:Enteral Nutrition; D004755:Enterobacteriaceae / Q000302:isolation & purification*; D004926:Escherichia coli / Q000302:isolation & purification*; D005516:Food Microbiology; D005521:Food Service, Hospital; D008087:Listeria / Q000302:isolation & purification*