PROBLEM TO BE SOLVED: To provide a method for softening fish bones using microwave irradiation to produce a product having brittle (softened) fish bones.SOLUTION: The method for softening fish bones using microwave irradiation includes irradiating microwaves to frozen fish meat with bones in a temperature range where the specific dielectric loss ratio of the fish bone is higher than that of fish meat. Fish meat with bones is produced by internally heating only the fish bones obtained by the method. The microwaves to be irradiated comprise pulse waves. The microwaves are irradiated to the frozen fish meat with bones using a coolant having a small specific dielectric loss ratio while cooling the fish meat. The temperature of the fish meat after irradiation with the microwaves is -20°C to 130°C.COPYRIGHT: (C)2013,JPO&INPIT【課題】 魚骨を脆弱化した製品の提供。【解決手段】 凍結した骨付き魚肉に魚骨の比誘電損率が魚肉のそれよりも大きい温度範囲でマイクロ波を照射する魚骨の軟化方法、および得られた魚骨のみを内部加熱した骨付き魚肉。照射するマイクロ波はパルス波である。比誘電損率の小さい冷却材によって、凍結した骨付き魚肉を冷却しながらマイクロ波照射する。マイクロ波照射後の魚肉の温度は-20℃ないし130℃である。【選択図】 図1
