Icier and Ilicali (2004, 2005a), Darvishi et al. (2011) reported
that the performance of heating system decreased with
an increase in voltage gradient. Yildiz et al. (2008) discussed
the effect of voltage gradient of 10–40 V/cm and temperature
from 20 to 90 C on the quality of pomegranate juice comparable
to that of conventional processing method. Also; they reported
that the quality of pomegranate juice such as
rheological properties, color, and total phenolic content depends
on heating rate. But, they did not report about electrical
conductivity and system performance.
The objective of the present work was to evaluate the effect
of voltage gradient on electrical conductivity, heating rate, system
performance and pH of pomegranate juice during ohmic
heating.