According to the research of nutrition medicine experts at home and abroad, walnuts have rich nutritional value. Each 100 grams of walnut kernel contains 63 grams of fat, 15.4 grams of protein, 10.7 grams of carbohydrates, 108 milligrams of calcium, 3.2 milligrams of iron, 0.17 milligrams of carotene, 0.32 milligrams of thiamine, 0.11 milligrams of riboflavin, and 1 milligram of niacin. Walnut contains 18 kinds of amino acids, of which 8 kinds of amino acids are necessary for the human body.
Walnut kernel fat content of 60% -70%, known as "tree oil depot." The content of unsaturated fatty acids is more than 90%, and oleic acid (omega-6 fatty acid) 54.3%, oleic acid 20.3%, and a-linolenic acid (ω-3 fatty acid) 16.8% in unsaturated fatty acids. The content of linoleic acid (omega-6 fatty acid) in walnut kernel is 3 to 4 times that of common rapeseed oil. In addition, walnut kernels contain a large amount of calcium, phosphorus, iron, rich in protein, phospholipids, and multivitamins.
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