studied the antimicrobial efficacy of gaseous ozone against E.coliin apple juice of
various pH levels. However, there have been very few research studies
investigating the bactericidal effect when apple juice is treated with
both heat and ozone gas simultaneously and their effect on quality
changes of apple juice. Therefore, in this study, we investigated the
combination or synergistic effect of ozone and heat treatments on
apple juice to inactivate E.coli O157:H7,S.Typhimurium, and L.monocytogenes. Also, changes in color and residual ozone of apple juice after treatment were investigated.