Electric conductivity is a crucial factor in ohmic heating, many different researchers reported the electric conductivity for different materials includes fresh fruits under ohmic heating such as apple, pineapple, pear, strawberry and peach which their electric thermal conductivity in the range from (0.05 to 1.2) S/m [17,18], pure water has poor electric conductivity, and it is around 0.055 μS/cm. The ions in solution control electric current trans- port, collection of electric conductivity for different material are listed below in Table 2