. after 45 min of ozone treatment. This supports thefindings of the current study in the way that ozone with mild heat treatment showed
greater antimicrobial effect than ozone treatment at ambient temperature. Our study confirmed that ozone treatment at 50 °C was highly effective in the reduction of pathogens in apple juice. In the case ofE. coli
O157:H7, the effect of ozone itself resulted in about a 1.50 log CFU/ml