< Topic >Quite having low with the chlorine water of concentration, quite it sterilizes the garden stuff efficiently. While decreasing the residual chlorine concentration of the garden stuff which is sterilized considerably, it prevents the breeding of the bacterium of the garden stuff which is sterilized effectively.SolutionsSterilization manner of the garden stuff, when the chlorine water which contains the chlorous acid sodium which designates chlorine concentration as above 5ppm on the surface of the garden stuff is made to contact, applies the ultraviolet ray of UVA to the surface of the garden stuff.< Advantages >Sterilization manner of the garden stuff, above 5ppm and, barely it is larger than chlorine concentration of the tap water quite having low with the chlorine water of concentration, quite efficiently be able to sterilize the garden stuff, furthermore while decreasing the residual chlorine concentration of the garden stuff which is sterilized considerably, can prevent the breeding of the bacterium of the garden stuff which is sterilized effectively.< Choice figure >Drawing 1【課題】極めて低濃度の塩素水でもって極めて効率よく青果物を殺菌する。殺菌された青果物の残留塩素濃度を著しく低減しながら、殺菌された青果物の細菌の増殖を有効に防止する。【解決手段】青果物の殺菌方法は、青果物の表面に塩素濃度を5ppm以上とする亜塩素酸ナトリウムを含有する塩素水を接触させる状態で、青果物の表面にUVAの紫外線を照射する。【効果】青果物の殺菌方法は、5ppm以上と、水道水の塩素濃度よりもわずかに大きい程度の極めて低濃度の塩素水でもって、極めて効率よく青果物を殺菌でき、しかも殺菌された青果物の残留塩素濃度を著しく低減しながら、殺菌された青果物の細菌の増殖を有効に防止できる。【選択図】図1
