Ohmic Heating for Milk Pasteurization : Effect of Electric Current on Nonthermal Injury to Streptococcus thermophilus

Abstract: Experiments on milk pasteurization were conducted with cells of Streptococcus thermophilus 21072 to confirm the lethal effect of electric current using combination treatment (sublethal ohmic and conventional heating treatment) and control treatment (conventional heating treatment only). Bacteria counts and calculated decimal reduction times (D value) of combination treatment indicated that combination treatment had significantly higher lethality than that of control treatment under the condition of the same temperature histories (p