The action of electric fields on living vegetal tissues is accompanied by the distortion of the vital activity of cells and changes their electric conduction. This depends not only on the structure and composition of the object, but also on the parameters of the electric action. The changes of the electric conductivity, current density and the temperature of the object in the process of treatment are important for the determination of the treatment regimes with the aim to obtain high technological results. The authors studied the dynamic characteristics of red beet under the action of alternative current pulses in a special installation. The current - voltage characteristics of red beet are presented in Fig. 1. The 0A range corresponds to the process of gradual destruction of cellular structures. In the AВ range an accelerated increasing of the current density occurs associated with the increasing of the cellular transparency and dissociation of organic acids under the action of the current and temperature of the raw material. In the ВС range the elimination of gas bubbles at the electrodes is observed with the subsequent boiling of the material. The family of curves in Fig. 2 shows the variation of the current density as a function of the duration of the electric treatment of the samples with their volume of 1 cm3 at the electric field strength of 50–85 V/cm2. The duration of the electric treatment reduces with the increasing of the field strength; the observed characteristics (Fig. 1) retain. The temperature of the material increases in the process of the electric treatment, and the rate of the increasing of the current density rises at 40 oC, since the cells of the material lose their semitransparency, and the electric dissociation of the organic acids in the cellular juice enhances. At the temperature about 80 ºС a vigorous elimination of gas bubbles and a dramatic current fall are observed. The boiling of the material at the temperature of 100 ºС is accompanied by interelectrode breakdowns.figureFig. 1. Current – voltage characteristics for the initial (1) and mashed (2) tissues Fig. 2. Current density vs the duration of the electric treatment and electric field strength for the initial (a) and mashed (b) beat tissues The dynamic characteristics of the mashed beat tissues (Fig. 3) show, that the general characteristics of the treatment of mashed raw materials retain (Fig. 2). However, the characteristic features appear at lower values of the field strength. This can be linked with the increasing of the cellular transparency of the material when it is meshed. Therefore, it was stated that the current-voltage characteristics of plasmolysis exhibit their nonlinear character owing to the inhomogenuity of the structure of the raw material. One should take into account this peculiarity while choosing the control schemes for the process of plasmolysis. The obtained results can be used for an express-method of determination of the optimal regimes of the electric treatment of vegetable raw materials. The initial information about the dynamic characteristics of the raw material is necessary for optimization of the experimental and theoretical tests with the aim of the rationalized designing of the electrode chambers of promising plasmolyzers.