PROBLEM TO BE SOLVED: To sterilize green vegetables while suppressing discoloration thereof.SOLUTION: In a production method including a sterilization step for sterilizing green vegetables by using a composition for sterilization having pH of 3 or higher and 4.5 or lower, the composition for sterilization contains hydroxy acid and monocarboxylic acid, and a value of the first acid dissociation constant of at least one of hydroxy acid and monocarboxylic acid is higher than pH of the composition for sterilization, and a mixture ratio between hydroxy acid and monocarboxylic acid is between 100:1 and 5:1 in terms of the mass ratio.SELECTED DRAWING: None【課題】緑色野菜の変色を抑制しつつ殺菌する。【解決手段】本発明の製造方法は、ｐＨが３以上、４．５以下の殺菌用組成物を用いて緑色野菜を殺菌する殺菌工程を包含し、殺菌用組成物は、ヒドロキシ酸及びモノカルボン酸を含み、ヒドロキシ酸及びモノカルボン酸の少なくとも一方の第一酸解離定数の値が当該殺菌用組成物のｐＨより大きく、ヒドロキシ酸とモノカルボン酸との混合比が質量比で、１００：１から５：１の間である。【選択図】なし
