Fig. 3. Effects of various treatments on Escherichia coli O157:H7 (a) and naturally present microbes (b–d) during storage (0–5 days at 5 °C). The columns show means ± standard deviations, and the different letters above the columns indicate significant differences (P < 0.05) among the presented timepoint groups. Microbial reduction indicates the difference in microbial counts between the control and treatment groups at the same time point. LA, lactic acid; AO, aqueous ozone.
