The peach and apricot purees having similar soluble
solid contents were heated ohmically. The changes of
electrical conductivity of the fruit purees during ohmic
heating were obtained in a band shape as shown in
Figs. 1 and 2. Similar electrical conductivity changes
have been obtained for strawberry based products by
Castro et al. (2004). Bubbling was observed above
50 C at especially high voltage gradients, and the heating
was stopped when bubbling started. It was observed