The invention discloses a high-permeability one-way waterproof film of
fruits and vegetables and a preparation method thereof the high-permeability one-way waterproof film. The one-way waterproof filmis composed of a
hydrogel film layer and a
spinning film layer. The one-way waterproof film is prepared by the following methods: preparing a
carboxymethyl chitosan solution; firstly dissolving
genipin into pure water in advance, further adding the
genipin into the
carboxymethyl chitosan solution drop by drop, performing ultrasonic treatment to uniformly disperse the
genipin into the solution, allowing the solution to stand for 4-12 hours to complete cross-linking, further adding Ca(OH)2 and bacteriostatic substances, and fully dispersing the components so as to obtain a hydrogel solution; pouring the hydrogel solution into a glass plate, performing
drying in a
vacuum drying oven, and performing peeling so as to obtain a
hydrogel film; and by taking an
ethanol solution of ethyl celluloseand Tween-80 as a
spinning solution, performing electrostatic
spinning on the
hydrogel film until the spinning film completely covers the hydrogel film, so as to obtain the one-way waterproof film. The one-way waterproof film prepared by the invention can change gas permeability according to
respiration of
fruits and vegetables, and has good properties of moisturizing,
moisture adjustment, waterproofness, air permeability and sustained release, and is capable of effectively prolonging the
shelf life of
fruits and vegetables.