Provided are: a preservative composition and a preservation liquid which can improve preservability of fruits and vegetables, and which are safer for the human body； and fruits and vegetables which have been treated using the preservation liquid. The present invention relates to a preservative composition for fruits and vegetables, which contains: an organic acid and/or a salt thereof； and at least one selected from the group consisting of glucosamine, a glucosamine derivative, a chitin oligosaccharide, a chitosan oligosaccharide, and salts thereof. Also, the present invention relates to a preservation liquid for fruits and vegetables, which contains the preservative composition and a liquid medium. Further, the present invention relates to fruits and vegetables which have been treated using the preservation liquid.
