Initial populations of E. coli O157:H7,S. Typhimurium and L.monocytogenesin inoculated apple juice were approximately 105–106CFU/ml and the limit of detection was 1.0 log CFU/ml. The combination of ozone and heat treatments exhibited a great effect in reducing E.coli 157:H7,S.Typhimurium, andL. monocytogenesin apple juice.The levels of surviving cells of the three pathogens in apple juice afterthe combination treatment are shown inFigs. 2–4