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Serological identification of enterotoxigenic staphylococci from cheese
C B Donnelly1, J E Leslie, L A Black
1Milk and Food Research, National Center for Urban and Industrial Health, Public Health Service, Cincinnati, Ohio 43226.
Abstract:
Single and double gel-diffusion techniques were employed to examine serologically coagulase-positive staphylococci from cheese for enterotoxigenicity. Supernatant fluid from sac cultures was examined for enterotoxins A and B. The results indicated that 9 of 155 cultures from market cheese and 7 of 77 cultures from food-poisoning cheese produced enterotoxin A, and that none of the cultures produced detectable levels of enterotoxin B. Results of serological tests were confirmed by intravenous injection of cats.
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