ABSTRACT
Con el fin de determinar el grado de aptitud microbiológica de los productos lácteos controlados por el Servicio de Salud Metropolitano del Ambiente, se analizaron 3.675 registros de muestras correpondientes al período 1991 a 1994. Los datos procesados mediante el programa Epi Info versión 5.0 indicaron que los alimentos controlados fueron: leche en polvo (26 por ciento); queso madurado (14 por ciento) y leche pasteurizada (13,2 por ciento). Un 18,4 por ciento (676) de las muestras presentó algún tipo de contaminación microbiológica sobre los límites establecidos. Los grupos de alimentos mayoritariamente contaminados fueron: mantequilla (55,8 por ciento); queso madurado (54,8 por ciento) y quesillo (37,4 por ciento), siendo coliformes fecales y staphylococcus aureus las causas más frecuentes
Subject(s)
Humans , Food Microbiology/legislation & jurisprudence , Dairy Products/microbiology , Bacteria, Aerobic/isolation & purification , Colony Count, Microbial , Feces/microbiology , Food Hygiene/legislation & jurisprudence , Legislation as Topic , Staphylococcus aureus/isolation & purificationABSTRACT
PCBs were detected using gas liquid chromatography in 540 human milk samples coming from 180 mothers living in three provinces of the Southern Region of Chile, collected in three different stages of lactation. Samples coming from 33 women (18.3 per cent) had PCBs residues, with a median level of 1.28 (range 0,09-84.83) ppm (milk fat basis). Ten of these women delivered to their offspring more than 0.01 mg of PCB/kg body weight/day, level considered hazardous to child helath. PCB levels tended to increase toward the third sampling stage. These levels were not related to women`s age but primiparae had higher levels than multiparae. It is concluded that a surveillance system in biological samples is necessary to oversee PCB levels in different regions of the country