As public concerns over food safety continue to grow and the demand for high quality packaged convenience foods increases, MW heating is drawning much attention of researchers in developing novel pasteurization and sterilization processes for packaged foods. A 915-MHz, single-mode, MW sterilization system for processing packaged foods was developed at Washington State University (WSU) (Tang et al., 2006). It was intended for proving the concept and demonstrating the potential of MW technology in