| 摘要 |
<p>A food preserving method characterized in that a conductive food tray (2) is housed in a cooler (1), a food (9) is placed on the food tray (2), and the food (9) is cooled and preserved while simultaneously applying an AC voltage and a DC voltage to the food tray (2). A DC/AC simultaneous application period during which the AC and DC voltages are simultaneously applied is set. After the DC AC simultaneous application period passes, the food (9) is cooled and preserved while applying either the AC or DC voltage to the food tray (2). A food preserving device is also disclosed. The device is characterized in that it comprises a cooler (1), a conductive food tray (2) housed in the cooler (1), an AC power supply (3) for applying an AC voltage to the food tray (2), and a DC power supply (4) for applying a DC voltage to the food tray (2), and in that the AC and DC voltages are simultaneously applied to the food tray (2).</p> |
