PROBLEM TO BE SOLVED: To provide a new and highly-safe quality maintenance agent capable of maintaining easily and effectively a quality of peeled and/or cut vegetable-fruit, or at a storage time of seafood.SOLUTION: Only by performing a processing in which two components of sodium acetate and α-lipoic acid are used as active ingredients, and are brought into contact with peeled and/or cut vegetable-fruit, or with seafood, discoloration, browning or the like thereof at the refrigeration or room-temperature storage time can be suppressed, further storage duration can be improved, and its quality can be maintained easily and effectively.SELECTED DRAWING: None【課題】皮むき及び／又はカット野菜・果物、又は、魚介類の保管時の品質を簡便に且つ効果的に保持できる、安全性も高い新たな品質保持剤等を提供する。【解決手段】酢酸ナトリウム及びα－リポ酸の２成分を有効成分として用い、皮むき及び／又はカット野菜・果物、又は、魚介類に接触させる処理を行うだけで、これらの冷蔵及び常温保管時の変色、褐変などを抑制し、また、日持ちを向上させ、その品質を簡便に且つ効果的に保持することができる。【選択図】なし
