A minimum 5-log reduction of S. Ententidis in tomato electric field(35 kV cm 1 juice with high-intensity pulsed for 1,000 us at 100 Hz. 4 HS pulse length, and 35.8 ct 1.8 C) could not be achieved without combining citric acid(25%, 5.08-log CFU ml-1) or cinnamon bark oil(0.1% 6.04 CFUml-1) (Mosqueda-Melgar et al. 2008) An International unit(Ul of Nisin is the dose required to inhibit one cellof Streptok cgafatlae in 1 ml broth and a standard Nisin preparation should have 900mU per m