PROBLEM TO BE SOLVED: To provide a processing method reducing the undesirable odor of a food product and extracting mellow sweetness.SOLUTION: While irradiating a food product with terahertz waves in a plural of different wavelength ranges, the food product is retained under different plural conditions in the combination of humidity and temperature.COPYRIGHT: (C)2015,JPO&INPIT【課題】食品の好ましくない臭いを低減し、まろやかさや甘みを引き出す加工方法を提供する。【解決手段】食品に、複数の異なる波長帯のテラヘルツ波を照射しながら、湿度及び温度の組合せにおいて異なる複数の条件下で食品を保持する。【選択図】図1