Egg white protein/gelatin-based edible antibacterial coating layer and preparation method thereof

The invention provides an egg white protein/gelatin-based edible antibacterial coating layer and a preparation method thereof, and belongs to the technical field of natural polymer materials for foodpackaging. Gelatin and egg white protein are used as main raw materials, carvacrol which is high in safety and good in antibacterial effect is selected as an antibacterial agent, a covalent cross-linking reaction is conducted on carvacrol, a plasticizer and the like under certain conditions, the PE surface is coated with the carvacrol, and the novel antibacterial double-layer antibacterial film which has good storage stability and can be widely used is prepared. The antibacterial fresh-keeping film obtained by the method can effectively inhibit staphylococcus aureus, escherichia coli and othercommon food spoilage bacteria, can provide a fresh-keeping packaging material with biological activity for the food industry, and has the advantages of simple preparation process, low production cost, no toxic or side effect,