Each 100 grams of walnut kernel contains 63.00 ~ 70.00 grams of high quality fat, protein 14.60 ~ 19.00 grams, carbohydrates 5.40 ~ 10.70 grams, phosphorus 280.00 milligrams, 85.00 milligrams of calcium, iron 3.20 milligrams, zinc 2.48 milligrams, potassium 3.00 milligrams, vitamin A 0.36 mg, vitamin B1 0.26 mg, vitamin B2 0.26 mg, vitamin B2 0.26 mg. mg, vitamin B2 0.15 mg, niacin 1.00 mg, riboflavin 0.11 mg, niacin 1.00 mg, thiamin 0.17 mg, but also contains a small amount of selenium, manganese, chromium and other minerals and vitamin E, vitamin K and so on, rich in lecithin.
The protein content of walnut kernel can be up to 29.7%, the protein digestibility and net protein ratio in walnut kernel is high, the potency is similar to animal protein, the amino acid content is rich, 18 kinds of amino acids are complete, and the content of 8 kinds of essential amino acids is reasonable, which is close to the standard stipulated by the Food and Agriculture Organization of the United Nations (FAO) and the World Health Organization (WHO), and it is a kind of good protein. Each 100 grams of walnut kernel contains 3549 mg of glutamic acid, arginine 2621 mg, aspartic radon acid 1656 mg, leucine acid 1170 mg, serine 934 mg. Isoleucine 328 to 625 mg, leucine 680 to 1268 mg, lysine 234 to 425 mg, methionine 134 to 236 mg, phenylalanine 421 to 711 mg, threonine 327 to 596 mg, tryptophan 136 to 170 mg, Jiejie 499 to 753 mg, histidine 447 to 696 mg. In particular, lysine, tryptophan and other 8 kinds of human body can not synthesize their own and need to be obtained from the diet of essential amino acids content is relatively high.
The main component of walnut fatty acids is unsaturated fatty acids, accounting for about 90% of its total. The content of linoleic acid, an essential fatty acid, is 3 to 4 times higher than that of common rapeseed oil. The acid value of walnut oil is 0.5 to 0.9, and the average molecular weight of the fatty acids is 273 to 276, which consists of: palmitic acid of about 8.0%, stearic acid of 2.0%, oleic acid of 18.0%, linoleic acid of 63.0%, α-linolenic acid of 9.0%, and myristic acid of 0.4%. Among them, linolenic acid is an essential fatty acid, one of the members of the omega-3 family, and a basic component of various cells. Walnut kernel is rich in essential fatty acids of the human brain, and does not contain cholesterol, is a high-quality incomparable natural "brain gold".
Walnut kernels contain nutrients that can make up for the lack of iron, zinc, calcium and other trace elements and linolenic acid in the diet of vegetarians, is a good natural nutritional supplement.
The absorption of vitamins is mainly through fat-soluble absorption, and walnuts in the **** the fat and vitamins stored in line with the physiological needs of the human body, very easy to absorb. Walnut kernels contain vitamin E, help people live longer. Vitamin E, on the other hand, can make the cells free from oxidative damage by free radicals, which is beneficial to health. Therefore, walnuts are a set of protein, fat, sugar, fiber, vitamins and other five major nutritional elements in one of the excellent dried fruit food, has a very good nutritional value. According to nutritionists, every 500 grams of walnuts equivalent to 500 grams of eggs or 4500 grams of milk nutritional value.
Walnut pollen content is high and nutritious. The pollen content of each male inflorescence is 0.13-0.50 grams. According to analysis, walnut pollen contains 25.38% protein, 21.33% total amino acids, 11.08% soluble sugar, as well as potassium, iron, manganese, zinc, selenium and other minerals; β-carotene, riboflavin, ascorbic acid, vitamin E and other content in the pollen is also high, so walnut pollen is a better natural nutritional health food resources.