Revealing the influence of temperature and moisture content on electrophysical parameters of raw apple materials

Additional heating of fruit raw materials in the drying process by direct passage alternating electric current makes it possible to intensify dehydration 3–5 times.
 The amount added thermal energy during depends, first all, on value specific electrical resistance material. Therefore, list necessary properties material must necessarily include as an integral indicator.
 During with additional heating, concentration dry soluble substances, which directly depends moisture content studied material, and its temperature change throughout time. This indicates a process. It was determined that initial resistivity apples before at 20 °C 8 kg/kg is within 195–220 Ohm•m, high conductivity material.
 With decrease from 6 kg/kg, decreases 25–30 % compared values. further below begins gradually increase.
 At same time rises, there significant resistance. When 25 55 °C, 10–13 equation dependence apple for varieties obtained.
 obtained results provide data development energy-saving technological device fruits selection optimal processing conditions compliance quality indicators