Your browser doesn't support javascript.
loading
Presence of Listeria monocytogenes in Ready-to-Eat Meat Products Sold at Retail Stores in Costa Rica and Analysis of Contributing Factors.
Calvo-Arrieta, Karol; Matamoros-Montoya, Karol; Arias-Echandi, María Laura; Huete-Soto, Alejandra; Redondo-Solano, Mauricio.
Afiliação
  • Calvo-Arrieta K; Tropical Disease Investigation Center (CIET) and Food Microbiology Research and Training Laboratory (LIMA), Department of Microbiology and Immunology, Faculty of Microbiology, University of Costa Rica, San José 11501, Costa Rica.
  • Matamoros-Montoya K; Tropical Disease Investigation Center (CIET) and Food Microbiology Research and Training Laboratory (LIMA), Department of Microbiology and Immunology, Faculty of Microbiology, University of Costa Rica, San José 11501, Costa Rica.
  • Arias-Echandi ML; Tropical Disease Investigation Center (CIET) and Food Microbiology Research and Training Laboratory (LIMA), Department of Microbiology and Immunology, Faculty of Microbiology, University of Costa Rica, San José 11501, Costa Rica.
  • Huete-Soto A; Tropical Disease Investigation Center (CIET) and Food Microbiology Research and Training Laboratory (LIMA), Department of Microbiology and Immunology, Faculty of Microbiology, University of Costa Rica, San José 11501, Costa Rica.
  • Redondo-Solano M; Tropical Disease Investigation Center (CIET) and Food Microbiology Research and Training Laboratory (LIMA), Department of Microbiology and Immunology, Faculty of Microbiology, University of Costa Rica, San José 11501, Costa Rica.
J Food Prot ; 84(10): 1729-1740, 2021 10 01.
Article em En | MEDLINE | ID: mdl-34047780
ABSTRACT: Listeria monocytogenes is a pathogenic bacterium associated with ready-to-eat (RTE) meat products sold at the retail level. The objective of this research was to determine the prevalence of L. monocytogenes in RTE meat products sold at retail in Costa Rica and to study the factors associated with the levels of contamination; analyzed factors include hygienic practices within stores (cutting techniques and microbial contamination of products) and the behavior of the isolates (persistence against antimicrobials and transfer potential). A total of 190 samples of RTE meat products were collected and analyzed for the presence of coliforms and Listeria spp. Isolates of L. monocytogenes were then evaluated in terms of resistance to disinfectants (quaternary ammonium compound [QAC] and chlorine) and their transfer potential from food contact surfaces (knife and cutting boards). Overall Listeria spp. prevalence was 37.4% (71 of 190); Listeria innocua was present in 32.1% (61 of 190) of the products, and L. monocytogenes was found in just 2.6% (5 of 190) of the samples. Most contaminated samples were cut with a knife at the moment of purchase (44.2%). When analyzing practices within the stores, it was observed that L. monocytogenes transfer from inoculated knife to salchichón was higher for samples cut at the beginning of the experiment. In addition, L. monocytogenes transfer from inoculated cutting boards was independent of the number of slices but contamination from plastic was higher than wood. Regarding L. monocytogenes resistance to disinfectants, average reductions of 2.6 ± 1.1 log CFU/mL were detected after 6 min of exposure to 200 ppm of chlorine; however, chlorine resistance varied among the strains. Prevalence of L. monocytogenes in RTE meat products sold at retail could be associated with handling practices within the stores; further studies are necessary to estimate the impact of these practices on the overall risk for consumers.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Contaminação de Alimentos / Fast Foods / Listeria monocytogenes / Produtos da Carne Tipo de estudo: Risk_factors_studies País/Região como assunto: America central / Costa rica Idioma: En Revista: J Food Prot Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Costa Rica País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Contaminação de Alimentos / Fast Foods / Listeria monocytogenes / Produtos da Carne Tipo de estudo: Risk_factors_studies País/Região como assunto: America central / Costa rica Idioma: En Revista: J Food Prot Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Costa Rica País de publicação: Estados Unidos