Production of Enterotoxins by Staphylococcus Aureus Isolated from Sheep Milk
نویسندگان
چکیده
The production of staphylococcal enterotoxin A and staphylococcal enterotoxin B was investigated in S. aureus isolates obtained from milk of clinically healthy sheep. In comparison with valid standard (up to 1. 10 CFU. ml), the S. aureus counts were higher in 36 of the total number of 46 positive milk samples (ranging from 1.2. 10 to 8.2. 10 CFU. ml). Six (13.0%) of the 46 isolates were enterotoxigenic and the production of SEA, SEB or SEA+SEB was recorded. SEA concentrations ranged from 7.0 ng.ml to 16.0 ng.ml. SEB concentrations were 20.0 ng.ml and 27.0 ng.ml. Milk and milk products could be foods at risk as concerns staphylococcal food poisoning, in case of enterotoxigenic S. aureus growth and toxin production.
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