1, plastic bag storage method: select a plastic bag, put the walnut kernel in it, then let the plastic bag expand and rush into carbon dioxide gas to reduce the oxygen concentration, which can prolong the storage time of the walnut kernel.
2. Refrigeration method: put the walnut kernel into a well-ventilated linen bag and then put it in a low-temperature refrigerator for refrigeration. It can ensure that the pulp tissue in walnut kernel is not oxidized and achieve the best storage effect.