| In this study electrical conductivity changes during ohmic heating, the thermal pretreatment effects and applications were investigated. Cyclic ohmic heating was first conducted by subjecting vegetable samples to three repeated cycles of ohmic heating to 80;The effect of starch gelatinization on electrical conductivity was studied by heating starch suspensions to 90;To investigate the potential of using thermal pretreatments prior to hot-air drying and the pretreatment effects on desorption isotherms, conventional, microwave and ohmic pretreatments were conducted. Vegetable samples were dried in a dehydrator after preheating to 50;Ohmic and microwave heating were employed to investigate electro-thermal effects on apple juice yield by preheating apple samples to 40 or 50... |
