Degradable antibacterial film and preparation method thereof

The invention relates to a degradable antibacterial film and a preparation method thereof, and belongs to the technical field of film materials. The method comprises: synthesizing a porphyrin metal organic framework material from an acidity regulator, a zircon salt and tetra-carboxyl phenyl porphyrin through a solvothermal reaction; and dissolving the porphyrin metal organic framework material in N, N-dimethylformamide, and mixing with polycaprolactone dissolved in N, N-dimethylformamide to prepare the degradable food antibacterial packaging film which is used for resisting bacteria of fresh-cut apples. The degradable antibacterial film prepared by the invention can realize efficient sterilization of the surfaces of fresh-cut apples, can avoid water loss of the apples and prevent browning of apple pulp to a certain extent, can be repeatedly used, has the advantage of biodegradability, and cannot cause adverse effects on the environment, so that the antibacterial film has a huge application prospect in the fie