Isolation of staphylococci from milk and cream sold at the Kars market and detection of their enterotoxigenicity
The aim of the study was isolation of staphylococci from milk and cream sold at the Kars market and detection of their enterotoxigenicity and possible risk for public health. A total of 160 staphylococci from 40 milk samples and 52 staphylococci from 30 cream samples were isolated. 22 (13.75%) isolates from 160 milk isolates and 9 (17.3%) isolates from 52 cream isolates were determined using human plasma as coagulase-positive staphylococci. From all the milk isolates, 4 (2.5%) of them were resistant to methycilline and one of them was resistant to vancomycin. Similarly, from all the cream samples 6 (11.54%) of them were resistance to methycilline and one (1.92%) of them was resistant to vancomycin. A total of 60 staphylococci isolates were investigated for their enterotoxigenicity. From 38 milk isolates and 22 cream isolates, 6 isolates and only one isolate respectively were found to produce staphylococcal enterotoxin (SE). One staphylococci isolated from cream samples produced only SEA, one staphylococci produced SEA, SEB, SEC, and one staphylococci produced SEA, SEB, SEC and SEE isolated from milk samples. Two isolates produced SEE and one isolate produced SEA from milk samples. In conclusion, investigated milk and cream samples are potentially the cause of staphylococcal food poisoning and can be dangerous for public health. For this reason, milk and cream should be supplied from healthy animals and milk and cream production, transporting this product to the market and keeping it their has to be done in a cold condition accordance to hygiene rules. At the same time milk producers and workers should be informed and educated of possible health risks.
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