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. 1995 Sep;58(9):1028-1030.
doi: 10.4315/0362-028X-58.9.1028.

Treatments with Nisin and Chelators to Reduce Salmonella and Escherichia coli on Beef †

Catherine N Cutter  1 , Gregory R Siragusa  1
Affiliations
Free article

Treatments with Nisin and Chelators to Reduce Salmonella and Escherichia coli on Beef †

Catherine N Cutter et al. J Food Prot. 1995 Sep.
Free article

Abstract

Salmonella typhimurium ATCC 14028 or Escherichia coli O157:H7 attached to lean beef tissue were treated with citrate, lactate, sodium hexametaphosphate, or EDTA, alone or in combination with nisin in simple buffers, and incubated at 4°C for up to 3 days. Lactate with nisin reduced S. typhimurium attached to beef by 040 log10 CFU/cm2, while EDTA and nisin reduced E. coli O157:H7 by 0.42 log10 CFU/cm2. Unlike earlier in vitro studies in which treatments with nisin and chelating agents resulted in reductions of > 4 log10 CFU/cm2, such reductions were not observed in situ.

Keywords: O157:H7; beef; chelators; nisin.

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