86% of the fat in walnuts is unsaturated fatty acid. Walnut is rich in copper, magnesium, potassium, vitamin B6, folic acid and vitamin B 1, and also contains fiber, phosphorus, nicotinic acid, iron, vitamin B2 and pantothenic acid. Every 50g walnut contains 3.6% water, 7.2g protein, 3 1g fat and 9.2g carbohydrate.

Walnut is sweet and warm, and enters the kidney, lung and large intestine. It can tonify kidney, strengthen waist, warm lung, relieve asthma, moisten intestine and relieve constipation. Indications: cough, asthma and lumbago due to kidney deficiency; (wood sandwich in the core) tastes bitter and warm; Tonifying kidney and astringing essence.

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Walnut, also known as walnut and peach, is the most widely cultivated at home and abroad. Deciduous trees generally have a tree height of 10 ~ 20m, a maximum height of more than 30m, a trunk diameter of about 1m, a life span of one hundred and twenty years, and a maximum life span of more than 500 years. The crown is semicircular or round-headed, with a diameter of 6-9 meters. The bark is grayish white to dark brown, the bark of young trees is smooth, and the old trees have irregular shallow longitudinal cracks. The branches are thick and smooth, and the young branches are green when they are born, but they can also be slightly red in early spring, and turn bright gray or grayish brown after stopping growing, showing white lenticels.

Reference source: Baidu Encyclopedia-Walnut