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Aiming to evaluate the microbiological and physico-chemical quality of the toscana sausage commercialized in the city of Mossoro, state of Rio Grande do Norte, Brazil, samples from 6 supermarkets were analyzed, verifying the most likely number (MLN) of thermotolerant coliforms, Salmonella spp. , and psychrotrophic bacteria, humidity, pH and water activity. All the samples were within the current standards which establish a maximum limit of 5 x 103 MLN/g for thermotolerant coliforms according to ANVISA. On the psychrotrophic bacteria count there was a variation of 1.46 to 4.10 expressed in log10 values. Of the 28 samples analyzed for the presence of Salmonella spp. , in 5 the presence of this microorganism was verified in 25 g. In regard to humidity, all the samples were found to be in accordance with the established legislation (lower than 70% humidity), and for water activity the limits varied between 0.772 and 0.809. The pH values were within normalcy, ranging from 5.7 to 6.2. In spite of the fact that the analyzed samples are in accordance with Brazilian laws, it is necessary to apply good practices, since the contamination by psychrotrophic microorganisms and Salmonella was significant and could harm the public health and reduce the product's shelf life.

Avaliação microbiológica e físico-química de linguiça toscana no Município de Mossoró, RN