However, the main component of fat in walnut is linoleic acid, which can synthesize unsaturated fatty acids in human body, but unsaturated fatty acids do not gain weight, and can also reduce the absorption of cholesterol in intestine.
At the same time, walnuts can make people feel full. Eating some walnuts before or during meals can increase satiety and prevent overeating, which has a good effect on weight control. In addition, walnut contains at least 10 different antioxidant components, such as selenium, melatonin, vitamin E and a variety of complex phenols, which have strong antioxidant effect and have anti-aging effect on human body.
Nutritional value:
Walnut is rich in nutritional value, and has the reputation of "Long live the son", "longevity fruit" and "treasure of health preservation". 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 kernel contains 22. 18% crude protein, in which glutamic acid is the main soluble protein, followed by arginine and walnut kernel aspartic acid. The crude fat content is 64.23%, of which the neutral fat content is 93.05%. Among neutral lipids, triacylglycerol accounts for 82.05%, sterol lipid accounts for 3.86% and free fatty acid accounts for 4.80%. The fatty acids in total fat and neutral fat are mainly sulfinic acid 64.48%-69.95%, oleic acid 13.89%- 15.36%. The fatty acid in triacylglycerol is mainly linolenic acid 69.98.
References:
Baidu encyclopedia-walnut