Evaluation of the Antibotulinal Effectiveness of Nisin in Bacon

Abstract
Nisin in combination with nitrite is an effective antibotulinal treatment for bacon. However, rather high levels of nisin (100 to 150 ppm) are required in combination with 120 ppm nitrite to provide a brief, 1-wk extension of shelf life for inoculated bacon incubated at 27°C. This limited antibotulinal effectiveness of nisin in bacon would have little practical value. The limited antibotulinal effectiveness of nisin in bacon was attributed to its insolubility in pickle solutions and its likely slow and incomplete diffusion from the pickle solutions into pork belly tissue.