PROBLEM TO BE SOLVED: To provide a method and a device for sterilizing a liquid substance in wich flavor is inhibited from being deteriorated while securing a sterilization function.SOLUTION: In the sterilizing method of the present invention, a solution to be treated which is a beverage other than water is irradiated with ultraviolet light having an emission wavelength of 280 nm or more and 320 nm or less without substantially irradiated with ultraviolet light having an emission wavelength of 260 nm or less.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】液状物に対する殺菌方法において、殺菌作用を担保しつつも、更に風味の劣化を抑制した殺菌方法及び装置を提供する。【解決手段】本発明の殺菌方法は、水以外の飲料物である被処理溶液に対して、発光波長が２６０ｎｍ以下の紫外光を実質的に照射せずに、発光波長が２８０ｎｍ以上３２０ｎｍ以下の紫外光を照射する方法である。【選択図】 図３
