Pasteurization systems, devices and methods are generally described that use synchronized peak electric and magnetic fields. Example pasteurization systems may include a first resonant circuit that includes a first capacitive element coupled to a first inductive element, a second resonant circuit that includes a second capacitive element coupled to a second inductive element. The first inductive element and the second capacitive element may be positioned about the first treatment region, and the second inductive element and the first capacitive element may be positioned about the second treatment region. A controller coupled to the first and second resonant circuits may provide a first signal to the first resonant circuit and a second signal to the second resonant circuit, phase shifted by a predetermined amount.
