Nisin may enhance the antilisterial activity of chemicals that may be applied as post-processing antimicrobialsolutionsinmeatproductsduetoits immediate bactericidal and strong, but short-term, bacteriostatic effects on L. monocytogenes. Combina- tions of nisin with acetic acid, sodium diacetate, and potassium benzoate may be more effective than those with lactic acid, sodium acetate and potassium sorbate, respectively. Specifically, nisin with 3 g/100 ml sodium diacetate or 3g/100ml potassium benzoate may be the mostpromisingcombinationsindippingsolutions, given that benzoate had no effect on bologna pH while diacetate at 3g/100ml reduced the pH less than equal concentrations of acetic or lactic acid. Preventive sprayingwith,ordippingin,nisinsolutionsmayassist incontrollingL.monocytogenesduringslicing,packa- ging and storage of processed meats, especially if combined, as appropriate, with organic acids or salts.