PROBLEM TO BE SOLVED: To provide a freezing method capable of transferring surely stimulus to the inside of a food material, and suppressing thickening of an ice crystal generated inside the food material, even in the case of a thick food material or a food material having a difference in a composition inside the food material.SOLUTION: In a freezing method of a food material, at least two different stimuli are imparted simultaneously to an over-cooled food material, thereby freeze water in the over-cooled state in the food material.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】厚みのある食材や、食材内部で組成に差がある食材であっても、食材内部にまで刺激を確実に伝達し、食材内部で生じる氷晶の肥大化を抑制する凍結方法を提供する。【解決手段】食材の凍結方法であって、過冷却した食材に対して、少なくとも異なる二つの刺激を同時に与えることで食材中の過冷却状態の水を凍結させることを特徴とする。【選択図】なし
