Characterization of Aeromonas hydrophila complex Isolated from Foods of Animal Origin (original) (raw)

2013, Characterization of Aeromonas hydrophila complex Isolated from Foods of Animal Origin

Aeromonas spp. are common contaminants in fish, a variety of raw meat, milk and milk products, and other raw foods. In this study, the incidence and the molecular typing of A. hydrophila complex in food of animal origin were determined. Therefore, a total of 300 milk, meat and their products samples were randomly collected from different localities at Ismailia Governorate. The total frequency distribution of A. hydrophila, A. caviae, A. sobria and A. schubertii in examined food samples were 40%, 31.7%, 10% and 18.3% respectively. All Aeromonas strains were resistant to erythromycin, penicillin, cloxacillin and sulbactam ampicillin. They are found to be sensitive to tobramycin, colistin and nalidixic acid. Using PCR technique, one Aeromonas stain was positive for lipase gene while 6 strains were positive for aerolysin gene. Strict hygiene measure should be taken in the slaughter house and during milking to minimize the contamination of food with Aeromonas.