EFFICACY OF SALMIDE(R), A SODIUM CHLORITE-BASED OXY-HALOGEN DISINFECTANT, TO INACTIVATE BACTERIAL PATHOGENS AND EXTEND SHELF-LIFE OF BROILER CARCASSES

The biocidal activity of Salmide(R), a sodium chlorite-based oxyhaloge n disinfectant, was tested alone and in combination with either 1.34 m M disodium ethylenediaminetetraacetic acid (EDTA), 0.347 mM sodium lau ryl sulfate (SLS) or 210 mM trisodium phosphate (Na3PO4) against a nal idixic acid-resistant strain of Salmonella typhimurium(NAr) inoculated onto fresh broiler drumstick skin. Following a 10-min exposure to inc reasing Salmide(R) concentrations (ranging from 27 to 81 mM) at 37-deg rees-C, the S. typhimurium(NAr) population on the broiler skin was red uced by 57.3 to 85.2%. Each Salmide(R) test concentration applied in c ombination with 1.34 mM EDTA produced S. typhimurium(NAr) population r eductions in excess of 97%. A similar trend (93.1 to 98.2% reductions) was observed for treatments containing 27, 54 or 81 mM Salmide(R) and 0.347 mM SLS. However, when S. typhimurium(NAr) was exposed to 210 mM Na3PO4 alone, a 99.5% population reduction was observed. This value w as not significantly different from those obtained for treatments cont aining 210 nM Na3PO4 and 27, 54 or 81 mM Salmide(R). In addition, 27 m M Salmide(R) was evaluated alone or in combination with 1.34 mM EDTA f or the extension of broiler drumstick shelf-life. Based on the enumera tion of mesophilic and psychrotrophic populations, the combined Salmid e(R) and EDTA treatment was shown to produce a slight extension in bro iler drumstick shelf-life compared to an untreated control. Treatment effects detected by drumstick skin Hunter color reflectance measuremen ts during refrigerated storage were inconsistent.