Análise microbiológica em queijos coloniais comercializados em feiras livres dos municípios de Ampére, Santa Izabel do Oeste e Realeza no Sudoeste do Paraná

Abstract

The colonial cheese or Minas Frescal stands out mainly for its simple manufacture and its high nutritional value. For being manipulated and for the high water activity (Aw), it can be considered a frequent vehicle of food-borne pathogens. This paper aims to evaluate the microbiological quality of colonial cheeses commercialized in street markets in the counties of Ampére, Realeza and Santa Izabel do Oeste, located in the southwest of Paraná. Microbiological analyzes were carried out on twenty seven samples of artisan cheeses and commercialized in these three counties, in order to evaluate the hygienic-sanitary conditions, verifying that they are within the consumption pattern described by the Brazilian National Sanitary Surveillance Agency (ANVISA). For total and thermotolerant coliforms count, the Most Probable Number (MPN) technique was used, counting Petri dishes of Colony-forming Unit for Staphylococcus and Mesophile, and for Salmonella were observed presence/absence. Regarding the presence of thermotolerant coliforms, 66,66% were in disagreement with the required standards by the ANVISA. At the Staphylococcus count, 100% of the analyzed samples were in disagreement with the legislation. Salmonella was found in 100% of the samples. The RDC nº 12/2001 doesn’t establish limits for mesophiles count, however, they are considered microbiological indicators for the quality of the food and it were considered the high values found. None of the samples were in accordance with the resolution and may damage the consumer health.