PROBLEM TO BE SOLVED: To provide a method of freezing/thawing of sea urchin in which the flow (melting) of the content of sea urchin is prevented.SOLUTION: The flow (melting) of the content of sea urchin is prevented by: placing the content of sea urchin taken out by dressing sea urchin on top of an electromagnetic wave generation plate subjecting to a slow freezing treatment at about -20°C for 12 hours or more in a freezer filled with nitrogen gas and subjecting to thawing in cold warm-water on top of the electromagnetic wave generation plate.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】ウニの身の流れ(溶け)を防止したウニの冷解凍方法を提供する。【解決手段】ウニをさばいて中身を取り出したウニを、電磁波発生プレートの上に載せ、窒素ガスを充填した冷凍庫で-20度c前後で12時間以上緩慢冷凍処理をし、電磁波発生プレートの上で冷温水で解凍することにより、ウニの身の流れ(溶け)を防止した。【選択図】 図1
