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Study of Staphylococcus aureus in raw and pasteurized milk consumed in the Reconcavo area of the State of Bahia, Brazil
Lílian Porto de Oliveira, Ludmilla Santana Soares e Barros, Valdir Carneiro Silva and Marina Gonçalves Cirqueira
This study is to verify the presence of Staphylococcus aureus in milk consumed in Reconcavo Baiano, Brazil for which 50 samples of raw milk and 20 samples of pasteurized milk were analyzed from 10 municipalities of this region (Cabaceiras do Paraguaçu, Cachoeira, Conceição do Almeida, Cruz das Almas, Dom Macedo Costa, Maragogipe, São Sebastião do Passé, Saubara, Santo Amaro and Santo Antônio de Jesus). The Staphylococcus aureus was isolated in Baird Parker agar where typical and atypical colonies were selected and submitted to coagulase and complementary tests. Out of 50 samples of raw milk studied, 34 showed contamination by Staphylococcus aureus , corresponding to 68% of the samples being contaminated. In the pasteurized milk, 6 samples were contaminated with this microorganism, corresponding to 30% of the 20 samples. The presence of this pathogenic microorganism indicates a potential health hazard to those who consume milk from this region.