Artículos de revistas
Microbiological Quality And Safety Of Minimally Processed Vegetables Marketed In Campinas, Sp - Brazil, As Assessed By Traditional And Alternative Methods
Registro en:
Food Control. , v. 28, n. 2, p. 258 - 264, 2012.
9567135
10.1016/j.foodcont.2012.05.021
2-s2.0-84862605657
Autor
Maistro L.C.
Miya N.T.N.
Sant'Ana A.S.
Pereira J.L.
Institución
Resumen
In this study, a total of 172 samples of minimally processed vegetables (MPV) were collected from supermarkets in the city of Campinas, Brazil. The MPV were analyzed using traditional and/or alternative methods for total aerobic mesophilic bacteria, total coliforms, Escherichia coli, coagulase positive staphylococci, Salmonella and Listeria monocytogenes. All the MPV analyzed presented populations of aerobic mesophilic microorganisms and total coliforms were >4 log 10 CFU/g and 1.0-3.4 log 10 CFU/g, respectively. E. coli was enumerated in only 10 samples out of 172 collected, while none of the 172 samples of MPV presented contamination by coagulase positive Staphylococcus (<10 1 CFU/g). Among the four methods used for detection of Salmonella in MPV (Vidas, 1,2 Test, Reveal, and Traditional), when Reveal was used a total of 29 positive samples were reported. For L. monocytogenes, the four methods tested (Vidas, Vip, Reveal, and traditional) performed similarly. The presence of Salmonella and L. monocytogenes in MPV was confirmed in one (watercress) and two samples (watercress and escarole), respectively. In conclusion, it has been observed that the microbiological quality of MPV commercialized in Campinas is generally satisfactory. 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