Fresh walnuts can be kept in the refrigerator. If they are stored for a short period of time then they can be in the freshness room, if they are stored for a longer period of time (more than a month) then they should be in the freezer.

Walnuts do better in ordinary refrigeration at a low temperature of about 5 degrees Celsius and an air relative humidity of 50-60 percent.

Preservation method: remove the green shell of fresh walnuts to retain the rest, slightly air-dried, divided into small portions into a plastic bag, sealed. Then put them in the refrigerator freezer and take out a small bag when you want to eat anytime.

Extended information:

Walnut value:

Walnut kernel contains 65-70% fat, 15-20% protein, carbohydrate more than 10%. In addition, walnuts contain a variety of vitamins and minerals. The nutritional value of one pound of walnut kernels is equivalent to 9.5 pounds of milk, or 5 pounds of eggs, or 4 pounds of beef. So people also called walnuts as "the treasure of the people". Raw food is sweet and savory, fried food, teeth and cheeks.

Walnut kernel is also an important traditional Chinese medicine. Tang Dynasty Monk in the "food therapy herb" book, talking about eating walnut kernels can strengthen the spleen and stomach, moisturize the blood, so that the flesh and bones delicate. Song Dynasty Liu Han and others in the "Kai Bao Materia Medica" records, walnut kernel "eating people fat and healthy, moist muscle, black hair". Ming Dynasty Li Shizhen's "Compendium of Materia Medica" further pointed out that walnut kernel has the function of tonifying qi and nourishing blood, moistening dryness and resolving phlegm, warming the lungs and moistening the intestines, and dispersing and disinfecting the swelling.

Walnut kernels are also used in industry to manufacture high-grade paints, printing inks and cosmetic raw materials. Walnut shells can be manufactured activated carbon, porous, high hardness, is the manufacture of gas masks of high quality raw materials.

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