Ozone Inactivation of Lactic Acid Bacteria

Ozone inactivation of lactic acid bacteria in water was studied. The strains studied showed resistance to ozonated water in the following order: Leuconostoc mesenteroides IFO3426>Lactobacillus fructivorans IFO 13118>Lactobacillus plantarum IFO3070>Weissella viridescence IFO3949>Enterococcus faecium IFO3128>Enteroccoccus feacalis IF012964. However, the survival ratio of L. mesenteroides IFO3426 was found to decrease by increasing the dissolved ozone concentration ranging from 0.5 to 5mg/l and the temperature in the range from 5 to 30°C.