Method for prolonging storage period of walnut kernels

The invention relates to a method for prolonging the storage period of walnut kernels and belongs to the technical field of food freshness preservation storage. The method comprises the following steps of: uniformly spraying prepared bleached shellac and tea polyphenol composite solution on the cleaned and dried walnut kernels, and naturally drying the walnut kernels in the air; packaging the dried walnut kernels into package bags, and carrying out vacuumizing and thermal sealing to package the walnut kernels; and storing the packaged walnut kernels at normal temperature or in the cold. By the method, the walnut kernels are smeared with the natural prepared bleached shellac and tea polyphenol composite solution, so that the limitation of a synthesized antioxidant is eliminated; furthermore, by vacuum package, oxidative rancidity of the walnut kernels is effectively suppressed; the storage period of the walnut kernels is prolonged; selling and transportation of the walnut kernels are facilitated; and the edible quality of the walnut kernels is kept for a longer time.