FIGURE 6.

Hurdle cocktail treatments: Log₁₀ MPN reductions in cell numbers of Listeria innocua cocktails and L. monocytogenes cocktail in response to hurdle treatments: heat (55°C) for 7.5 min, UV-C at 328 mJ/cm2, Tsunami^TM 100 at 10 ppm 2 min (Hurdle 1) and heat (55°C) for 15 min, UV-C at 672 mJ/cm2, Tsunami^TM 100 at 10 ppm 4 min (Hurdle 2). Error bar = least significant difference (p = 0.05, n = 3). The letters above the bars indicate the similarity and/or difference in reductions between the strains for example: “bc” and “bc” are similar to each other or do not show significant difference in reduction between each other and “d”s indicate similar reductions between those respective cocktails.