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abbaspour M, Rajabi Z, Soltan Dallal M M. Prevalence and antibiotic resistance of Enterococci species isolated from packed and unpacked dried vegetables distributed in Tehran. RJMS. 2017; 24 (159)
URL: http://rjms.iums.ac.ir/article-1-4687-en.html

Professor Tehran University of Medical Sciences
Abstract:   (141 Views)

nosocomial infections, have frequently been isolated from animal and vegetable foods. The aim of this study was to identify the prevalence and antibiotic susceptibility of enterococci isolated from seven types of vegetables randomly selected from grocery stores in Tehran.

Materials and Methods: In this cross-sectional study, 140 samples were collected from April to October 2015.Enterococci were detected in samples using the Gram stain and biochemical tests such as catalase reaction, and hydrolyze bile esculin and identified at the species level by the common biochemical tests. Antibiotic susceptibility test of isolates with six antibiotics was also done using the disc diffusion method.

Results: Eighty-four out of 140 (60%) samples showed enterococci. Of these, 72.6% belonged to the species Enterococcus faecium. The results showed that 10 ,6  ,5  ,1  and 1 isolates were E.durans, E. gallinarumE. faecium,   E. avium and    E.casseliflavus respectively. Low percentages of microorganisms were resistant to tetracycline (15%), ampicillin (4%), and chloramphenicol (4%). A high percentages of microorganisms were resistant to gentamicin(93%) , vancomycin(48%),and erythromycin(32%).

Conclusion: Although Enterococcal species was considered to have a high distribution in Tehran vegetables, but the The predominant species were Enterococcus faecium. Resistance to ampicillin and chloramphenicol was less than other antibiotics, and resistance to vancomycin and gentamicinwas higher.

It is therefore suggested that these isolates may have severe health implications on consumers and this ignites the need to implement proper farm management and hygiene practices during the cultivation, harvesting, packaging and retail of these fresh produce.

Type of Study: Research | Subject: Microbiology

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