Keywords
Salmonella Typhimurium
microbiology
How to Cite
Abstract
The inadequate foods handling and the exposition of them to environment increase the hazard of contamination of the doce de leite offered to consumers. The aim of the present study was to evaluate the microbiology quality of pasty doce de leite sliced into pieces to be sold by retail. Salmonella detection, and coagulase-positive Staphylococci, thermotolerant coliforms, mould and yeast counting were performed in 28 samples of doce de leite. Salmonella enterica subsp. enterica serotype Typhimurium was detected in 25g of one sample. This strain was resistant to cloramphenicol and sulphametoxazole-trimethoprim, and partially resistant to tetracycline, but susceptible to the other antimicrobial agents. All of the samples showed coagulase-positive Staphylococci counting < 10 CFU/g. Results from thermotolerant coliforms counting were < 3 MPN/g, except two samples collected from two supermarkets which showed 0.4 and 2.1 MPN/g, respectively. One unique sample showed mould and yeast counting with values accepted by Brazilian legislation; the other samples showed counts over 1.0 x 102 CFU/g. As the pasty doce de leite have been sliced into pieces in the markets this procedure should be the source of pathogenic microorganisms to humans, which justify the establishment of an stringent control on the inspection and the surveillance of this kind of food.References
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