PROBLEM TO BE SOLVED: To provide a method for preserving a food product capable of keeping the freshness of a food product for a long term.SOLUTION: A method for preserving a food product includes covering at least part of a food product with a particulate ice aggregate containing 0.5-5.0 mass% of salinity, and keeping a temperature of the food product at a temperature higher than the freezing temperature of the food product by 0.0°C-1.5°C. Furthermore, in the method for preserving the food product, the salinity concentration of the aggregate is preferably 2.0-4.0 mass%, and a germicidal treatment is preferably given to the food product while keeping the temperature of the food product at a temperature higher than the freezing temperature of the food product by 0.0°C-1.5°C.COPYRIGHT: (C)2014,JPO&INPIT【課題】長期間にわたって食品の鮮度を維持することが可能な食品の保存方法を提供すること。【解決手段】本発明の食品の保存方法は、塩分を0.5質量%~5.0質量%含む、微粒子状の氷の集合体で、食品の少なくとも一部を覆い、前記食品の温度を、前記食品の凍結温度よりも0.0℃~1.5℃高い温度で保持することを特徴とする。また、本発明の食品の保存方法では、前記集合体の塩分濃度は、2.0質量%~4.0質量%であることが好ましい。また、本発明の食品の保存方法では、前記食品の温度を、前記食品の凍結温度よりも0.0℃~1.5℃高い温度で保持しつつ、前記食品に対して殺菌処理を施すことが好ましい。【選択図】なし