To provide a novel method capable of impregnating a food material with a large amount of substance in a short time.SOLUTION: The method for impregnating substances into food materials according to the present invention is a method for impregnating substances into foodstuffs by generating impregnation driving force by utilizing a phase transition phenomenon of water in foodstuffs under reduced pressure, A method of impregnating a substance, Decompression treatment of food materials boils water in foodstuffs under reduced pressure, causing volumetric increase due to vaporization of water in foodstuff and volumetric expansion of water vapor, Subsequently, the food material in contact with the impregnated substance is pressurized, causing volume reduction due to volume shrinkage of water vapor in the foodstuff and condensation of water vapor, generating impregnation driving force, impregnating the foodstuff with the substance .【課題】食材に短時間で大量の物質を含浸することができる新規な方法の提供。【解決手段】本発明による食材への物質含浸方法は、減圧下で食材内の水の相転移現象を利用して含浸駆動力を発生させて、外観で認識可能な形状を保持した食材内に物質を含浸する方法であって、 食材を減圧処理し、減圧下で食材内の水を沸騰させて、食材内の水の気化と水蒸気の体積膨張とによる体積増加を引き起こし、 続いて、含浸物質に接触した食材を昇圧処理し、食材内の水蒸気の体積収縮と水蒸気の凝縮とによる体積減少を引き起こし、含浸駆動力を発生させて、食材内に物質を含浸することを特徴とする。
