| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that a preservation method by conventional cooling performs cooling using heat conduction from outside and causes a needle crystal so that cell destruction occurs because of a large ice crystal. <P>SOLUTION: A preservation device includes cooling unit 12 for cooling a refrigerated object 11, a cooling compartment 13 for containing the refrigerated object 11, and microwave generation unit 14 for generating microwaves to apply the microwaves to refrigerated object. By applying microwaves to the refrigerated object 11, the refrigerated object can be preserved under a non-frozen state even at a temperature equal to or less than a freezing point. Accordingly, hardly freezable foodstuff such as vegetables, konjac food, and tofu which are not suitable for freezing can be preserved for a long period of time. Further, vegetables and fruits can be preserved while keeping more deliciousness because tasty components such as nutrients and amino acid increase through biological defense reaction at equal to or less than a freezing point. <P>COPYRIGHT: (C)2012,JPO&INPIT |
