1. What are the nutritional components of walnuts? The nutrition of walnut kernel is very comprehensive. The main nutritional components include: per100g, walnut kernel contains 63.00 ~ 70.00g of high-quality fat, protein14.60 ~19.00g, carbohydrate 5.40 ~10.00g, and phosphorus 280. Vitamin A0.36 mg, vitamin B 1 0.26 mg, vitamin B2 0. 15 mg, nicotinic acid10.00 mg, riboflavin 0.10/mg, nicotinic acid10.00 mg.
Among them, the main component of walnut fatty acid is unsaturated fatty acid, accounting for about 90% of its total. The so-called unsaturated fatty acid is something that animals can't synthesize and must eat food. When the unsaturated fatty acid in the diet is insufficient, low-density lipoprotein and low-density cholesterol in the blood increase, resulting in atherosclerosis and inducing cardiovascular and cerebrovascular diseases.
In addition, walnuts contain? Unsaturated fatty acids are important nutrients in the brain and cranial nerves. Insufficient intake will affect memory and thinking ability, affect the intellectual development of infants and children, and produce Alzheimer's disease for the elderly. The content of linoleic acid, an essential fatty acid for human body, in walnut is 3~4 times that of common rapeseed oil.
Second, what are the effects of walnuts on the human body? 1, prolong life.
Modern research shows that walnut contains many antioxidant components such as vitamin E, which can remove excessive oxygen free radicals from human body and delay cell aging. If walnut kernel and black sesame are mixed and eaten, it can increase sebum secretion, improve skin elasticity, keep skin delicate and delay facial aging.
2, brain and intelligence.
Walnut is very suitable for brainworkers. Walnut kernel is rich in phospholipids and unsaturated fatty acids, among which phospholipids are necessary for brain growth and development, which can ensure the normal metabolism of brain cells, enhance the vitality of brain cells and improve human intelligence. Unsaturated fatty acids can promote the vitality of brain cells and enhance human memory and thinking ability.
3. Prevent various cardiovascular diseases.
Walnut is rich in fat, mainly composed of unsaturated fatty acids such as oleic acid, linoleic acid and linolenic acid. Oleic acid and linoleic acid can not only reduce the absorption of cholesterol in intestine, but also promote the explanation and removal of cholesterol, so that blood can be purified.
Linoleic acid has the functions of lowering blood fat, lowering blood pressure, resisting arrhythmia, thrombosis and arteriosclerosis, etc. Trace elements such as zinc, manganese and chromium contained in walnuts are also of certain significance for protecting heart blood vessels and promoting cholesterol metabolism.
How many walnuts does an adult eat every day? Under normal circumstances, dietary guidelines recommend that the daily intake of nuts should be controlled within10g, so walnuts should be eaten for a long time, and only 3~4 walnuts should be eaten every day. Eating too much will cause physical discomfort.