PATHOGENS OF FOOD

Author: GONZÁLEZ RIVAS FABIÁN.
Year: 2004.
University: AUTÓNOMA DE BARCELONA [www.uab.es].
Place of defense: FACULTAT DE VETERINARIA.
Place of preparation: ESCUELA DE POSTGRADO.

Summary: More than half of the toxiinfecciones food occur in the home. Knowing the distribution and type of flora and domestic flows of some of this to other surfaces is vital to establish measures to prevent outbreaks in the future. Furthermore, knowing the capaciedad of reducicón of counts in the microbial flora of products cleaners / disinfectants on surfaces used in the home is critical for designing hygienisation process to minimize the influx of these to foods. Among the objectives of this thesis are the characterization and quantification of microbial flora of household surfaces and assessing the effectiveness of disinfectant some of the household goods most popular. The results show that of all the areas studied largest microbiological contamination presented are those who remain wet for several hours a day: desagà ¼ and the sink of the kitchen and desagà ¼ and the bathtub. The flora in these areas are predominantly enterobacteria. However, in areas where moisture is not present steadily eroded the very enterobacteria see their proliferation until counts of the same order of magnitude as the flora espacies gender Staphulococcus and related fields. The Staphylococcus and related are, in addition, a great capacity for adhesion and formation of biofilms, which complicates their removal. Once known this distribution of flora proceeded to assess the effectiveness of different products disinfectant cleaners. The results show that products intended for household cleaning containing quaternary ammonium or hypochlorite are those who get a greater reduction of microbial flora in the area. While the wet surfaces recontamination from the wastewater plant is too fast.