To provide a high-quality thawing method free from rapid, uniform, burning and boiling which is indispensable for frequently used refrigeration technology in the fishery industry and fishery processing industry.For rapid thawing, electromagnetic waves ranging from 130 MHz to 300 MHz with a short time required for passing through the B band are in the rate-determining stage, electromagnetic waves from 110 MHz to 170 MHz are used for uniform thawing, electromagnetic waves of 110 MHz to 170 MHz are irradiated during irradiation and boiling and burning after thawing In order to prevent it, it can be solved by using 110-160 MHz electromagnetic waves with less temperature rise after thawing.(FIG.【課題】水産業および水産加工業において、多用される冷凍技術に欠かせない迅速、均一、焼けや煮えのない高品質解凍法が待たれている。【解決手段】迅速解凍には律速段階になっているB帯通過所要時間が少ない130MHzから300MHzまでの電磁波が、均一解凍には110MHzから170MHzの電磁波が、照射中および解凍後の煮えや焼けを防ぐためには解凍後の温度上昇が少ない110-160MHz電磁波を利用することで、解決できる。【選択図】図5
