▎ 摘　　要

NOVELTY - Preparing graphene oxide/chitosan composite preservative comprises adding chitosan acidic solution into the graphene oxide mixed solution, uniformly mixing, heating and stirring, centrifuging and washing to obtain the finished product. USE - The preservative is useful for packaging and preserving fruits and vegetables (claimed). ADVANTAGE - The preservative: blocks air hole and the skin hole on the surface of the fruit and vegetable; inhibits the breath; reduces the evaporation of water; can well maintain the excellent fruit rate of fruits and vegetables; inhibits the weight loss rate; reduces content of soluble solids; and enhances the antioxidant effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene oxide/chitosan composite preservative prepared by the above-mentioned method.