Avaliação microbiológica e perfil de susceptibilidade a antimicrobianos das bactérias isoladas de tambaqui (Colossoma macropomum) comercializado na cidade de São Luís – Ma

Abstract

Fish is a product rich in animal protein, has essential nutrients, and is used as a food source in many regions of the world. In order to evaluate the microbiological quality and to verify the antimicrobial susceptibility profile of tambaqui (C. macropomum) isolates commercialized in the city of São Luís - Maranhão. Sixty samples of tambaqui fillets (C. macropomum) obtained from supermarkets and free fairs of the city were analyzed. The collected samples were analyzed for the Most Likely Number (NMP) of coliforms at 35ºC and 45ºC; Search for Escherichia coli; Counting and identification of Staphylococcus coagulase positive; Research of Salmonella sp, Aeromonas spp and Listeria sp, and antimicrobial resistance profile. High coliform contamination at 35 ° C and 45 ° C was detected in addition to pathogenic bacteria such as Aeromonas spp. In 56 (93.3%) samples and E. coli present in 13 (21.66%) samples. No coagulase positive Staphylococcus, Salmonella sp and Listeria sp. For the antimicrobial resistance profile, it was verified that the E. coli isolates showed low percentages of antimicrobial resistance tested and for the Aeromonas strains isolated, high percentages of antimicrobial resistance were verified, mainly to ampicillin, amoxiline clavulanate, cefuroxime, cefoxitin, and cefotaxime. The tambaqui (C. macropomum) commercialized in fairs and supermarkets of the city of. Presented hygienic sanitary conditions inadequate for the human consumption, being able to transport pathogens of importance for public health.