KINETIC OF PATHOGENIC MICRO-ORGANISMS GROWTH IN TROPICAL FRUIT BRAZILIAN
Listeria monocytogenes and Salmonella enterica Enteretidis study targets because of the ability to withstand environments with different temperatures. The aim of this study was to describe the growth kinetics of these micro-organisms in pulp and melon peel, stored under 30°C temperature. The experimental growth data were fitted to the model Baranyi and Robert (1994) by using DMFit Baranyi. The initial microbial load was inoculated 10¹-10² CFU / g. The results showed that the Baranyi and Roberts model fit the experimental data. Final populations of L. monocytogenes and S. Enteretidis ranged between seven and eight logarithmic cycles. The growth rate (μ) for L. monocytogenes in pulp and bark were similar, but smaller than the growth rate (μ) of S. Enteritidis. These results indicate that melons stored at 30°C, even if they are at a low initial contamination, both in pulp and in the skin, and supports the development of these pathogens reaching bacterial populations represent risk to public health.