Identificação e suscetibilidade antimicrobiana de cepas de Salmonella e Escherichia coli isoladas de sururu e siri processado

Abstract

The consumption of shellfish has been responsible for numerous epidemic outbreaks due to its contact with environmental pollution or lack of good practice during handling. Bacteria of the genus Escherichia and almonella have been implicated in most food outbreaks. Furthermore, the high antimicrobial resistance to various commercial antimicrobial agents, has hindered treatment of patients with food infections. Thus, this study aimed to identify strains of Escherichia coli and Salmonella previously isolated from samples of fresh mussels and crab processed, as well check as antimicrobial resistance front to different antimicrobial agents. The pre-strains isolated (25 E. coli and 25 Salmonella) that were on the bench cultures Laboratory of Food Microbiology and Environmental on Core for Environmental Studies in Fisheries and Aquaculture initially were activated and purified for later subjected to various biochemical and serological tests when treated strains of Salmonella. For antimicrobial susceptibility of microorganisms were used 12 commercial antimicrobials. The presence of Salmonella was observed only in samples of fresh mussels, while E. coli was confirmed in both foods analyzed. Salmonella presented 100% resistance to vancomycin and 88.8% the cephalothin, and tetracycline, respectively. All Salmonella strains presented profile of multidrug. Escherichia coli presented resistencia to antimicrobials vancomycin (100%), tetracycline (29.4%), ampicillin (23.5%), trimethoprim-sulfamethoxazole (23.5%) and cephalothin (5.9%). Multiple resistance was observed only for strains of mussels in natura. Antimicrobial resistance mediated by plasmid was observed in strains of E. coli as the in strains of Salmonella. Thus, samples of mussels in natura and processed crab can pose a risk to public health because they contain bacteria of faecal origin, besides serving of vehicle to dissemination to bacteria resistant to different antimicrobials commercial.