Pesquisa de pseudomonas aeruginosa em ovos vendidos na feira livre de Caruaru

Abstract

Eggs are nourishing food, representing a natural growth medium for several microorganisms. Pseudomonas aeruginosa, a pathogen associated to diverse nosocomial infections at immunocompromised patients, is considered a microorganism that indicates contamination by organic matter. The infection of the eggs may happen during the laying, as well as it may occur a cross-contamination at numerous situations in which those eggs are handled. We attempt to inquire the presence of Pseudomonas aeruginosa in the components of commercialized eggs, as an experimental (laboratorial) work, gathering samples at three main street fairs of Caruaru, excluding eggs with compromised shell. Sampling was collected according to the criteria established by Codex Alimentárius. Asparagine and Acetamide were used in this analysis, and the results were expressed by Most Probable Number (MPN) of the microorganism of interest per gram of feed, obtained through the Hoskins Table. There is a significant presence of Pseudomonas aeruginosa in the eggs, most of the time, in the shell and yolk. Its relevance lies in its role as an opportunistic pathogen, causing infections in immunocompromised individuals.