| 摘要 |
<p>This invention relates to a method and an apparatus for sanitizing packaged food products by means of air ions in order to extend their shelf life and preservability at retail outlets. According to the invention, the packaged food products are held within an electric field, being generated between two electrodes, by supplying the electrodes with a periodic voltage, the strength of said electric field being controlled between a minimum value, sufficient to generate the air ions, and a maximum value which is below that needed to strike an electric arc. Advantageously, the electric field is established between a pair of plate-like electrodes facing each other, and at least one of the electrodes is coated with an insulating material. <IMAGE></p> |
