Abstract
The effectiveness of several microbial inhibitors in preventing the growth of S. aureus in an intermediate moisture food was tested. S. aureus was inoculated into the food at aw''s [water activities] of 0.86-0.90 and pH 5.2 and 5.6. Not all inhibitors prevented growth. The effectiveness against S. aureus was a function of both pH and aw. Of the compounds tested, methyl paraben, sodium benzoate, potassium sorbate and calcium propionate were the most effective against S. aureus at low concentrations.