Multidrug Resistance Among Different Serotypes of Salmonella Isolates from Fresh Products in Indonesia

Author: Kusumaningrum, H. D., Suliantari and Dewanti-Hariyadi, R


A total of 125 samples, consisting of 40 samples of chicken cuts, 30 samples of beef cuts and minced beef, 29 samples of fish, and 26 samples of vegetables were examined for aerobic plate counts and the presence of Salmonella. The samples were collected from the open market and from a supermarket in Bogor Indonesia. Based on the total plate counts, 35.2% of the fresh products showed a good to average quality. Salmonellae were detected in 24.8% of the samples examined. Chicken cuts were found as the most contaminated (52.5%), followed by beef (16.7%), fish (10.3%) and vegetables (7.7%). Serotyping of the isolates identified four serotypes: Salmonella Weltevreden, S. Kentucky, S.Typhimurium and S. Paratyphi C. Most of the isolates (n=15) exhibited resistance to erythromycin. Only one isolate of S. Kentucky, isolated from chicken cuts, showed intermediate resistance to chloramphenicol. Ten isolates showed resistance to at least two antibiotics. One strain of S. Weltevreden isolated from beef cuts demonstrated resistance to four antimicrobial agents (erythromycin, tetracycline, sulfamethoxazole, and streptomycin).

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