Evaluación de calidad microbiológica de ensaladas vegetales comercializadas por locales de comida de los centros comerciales de la zona norte de la ciudad de Guayaquil.

Abstract

Microbiological quality has an important role in food processing. The objective of this work is to evaluate the microbiological quality of fresh vegetables salads sold by food stores of shopping malls located in the north of Guayaquil city. There are three types of risks in the food industry, the chemical, physical and microbiological, being this last risk the responsible for food-born illnesses caused by Salmonella spp, Escherichia coli, Staphylococcus aureus, Shigella and others. Several studies have shown that wrong manufacturing practices can cause microbiological contamination. To determine the population, a sampling plan was stablished based on the distribution of shopping centers in the north of Guayaquil city, locating 14 shopping centers with a total of 142 food stores that sell fresh vegetables salads and to stablish the sample size the formula of known population was applied, obtaining 104, as the number for food stores to be evaluated. The microbiological analyzes will be performed following the AOAC official methods for Petrifilm 3M plates. The results will be interpreted with the help of the Infostat program. The results obtained from the microbiological analysis will be evaluated using the requirements established by the NTS N° 071-MINSA/DIGESA-V.01.