Achen and Yousef (2001)confirmed that there was no significant difference among various temperatures (4, 22, 45 °C) with bubbling ozone treatment in the inactivation ofE. colifrom apple surfaces. They explained that conflict between increasing solubility and decreasing
stability and reaction rate reduced the efficacy of ozone at low temperatures. The current study also shows that there was no significant difference between surviving populations after treatments at 25 °C and 45 °C except forS.Typhimurium treated for 60 s as shown in (a) ofFigs. 2, 3,
and 4