A pilot-scale 6 kW 27 MHz RF sterilization system developed at
Washington State University was used to perform the experiments.
Detailed information about the RF sterilization system is described
in Luechapattanaporn et al. (2004) and Wang et al. (2008a). In
brief, the RF sterilization system consisted of an RF feeder, two parallel
plate electrodes, four balanced inductors connected to the
upper electrode, and a pressure-proof vessel in which the food
package was heated (Fig. 1). The height of the top electrode was