| 摘要 |
<p>A pulsed field treatment apparatus for applying pulsed electric fields to pumpable foodstuffs has an electric field treatment chamber (108) with a first electrode (302) and a second electrode (308). A solid dielectric separator (318) having a dielectric nonconductive spacer separates the first electrode (302) from the second electrode (308) externally of the chamber and has a minimum surface pathway length between the first electrode (302) and the second electrode (308) of at least twice the minimum distance between the first electrode and the second electrode within the chamber. An inlet conduit (304) is connected to the chamber for introducing pumpable foodstuffs and an outlet conduit (306) is also connected to the chamber for discharing pumpable foodstuffs which have passed through the electric field treatment chamber. A high voltage pulser (112) generates electric pulses at the rate of at least 0.01 pulses per second to the first and second electrodes (302, 308) which are excited by the electrical pulses and produce an electric field having an electric field strength of at least 25,000 volts per centimeter. A pump connected to the inlet conduit forces the pumpable foodstuff through the electric field treatment chamber at a rate such that all of the pumpable foodstuff is subjected to at least one electric field pulse during its transit through the electric field treatment chamber.</p> |
