The best time for children to eat walnuts

Many parents are worried that their children are malnourished, so they will give them more nutritious foods, such as walnuts. This kind of food is indeed very good and contains quite high amounts of nutrients. However, there is a certain time limit for eating walnuts. If children want to eat walnuts, the best time is in the morning and evening, so that they can nourish the brain.

Eating 5 to 6 walnuts every morning and evening is very beneficial, not only for the body but also for anti-aging. It is often better than taking tonic medicine.

Regarding the consumption of walnut kernels, it is generally believed that eating 5 to 6 walnuts a day, about 20 to 30 grams of walnut kernels, is appropriate.

Walnuts are rich in nutritional value and are known as the "longevity seed", "longevity fruit" and "treasure of health". 86% of the fat in walnuts is unsaturated fatty acids. Walnuts are rich in copper, magnesium, potassium, vitamin B6, folic acid and vitamin B1. They also contain fiber, phosphorus, niacin, iron, vitamin B2 and pantothenic acid. Every 50 grams of walnuts contains 3.6% water, 7.2 grams of protein, 31 grams of fat and 9.2 grams of carbohydrates.

Walnut kernels contain 22.18% crude protein, of which the composition of soluble protein is mainly glutamic acid, followed by arginine and walnut kernel aspartic acid. Crude lipids account for 64.23%, of which neutral lipids account for 93.05%; among neutral lipids, triglycerides account for 82.05%, sterols account for 3.86%, and free fatty acids account for 4.80%. The fatty acid composition of total lipids and neutral lipids is mainly linoleic acid (64.48%-69.95%) and oleic acid (13.89%-15.36%); the fatty acids contained in triglycerides are mainly linolenic acid (69.98); the non-saponifiable part of sterol esters is mainly β-sitosterol, and there are small amounts of campesterol, stigmasterol, avenaster-5-enol, and stigmaster-7-enol; carbohydrates account for 13%; a variety of free essential amino acids; isoleucine, leucine, tryptophan, phenylalanine, valine, threonine and lysine, etc., whose content accounts for 47.50% of the total amino acids.

The fruit contains 1,4-naphthoquinone, juglonequinone, 4-hydroxy-1-naphthyl-β-D-pyranoglucoside, 4,8-dihydroxy-1-naphthyl-β-D-pyranoglucoside, potassium, calcium, iron, manganese, zinc, copper, strontium and other trace elements. The unripe fruit is rich in vitamin C. The peel contains salicylic acid, p-hydroxybenzoic acid, vanillic acid, gentisic acid, p-hydroxyphenyl acid, gallic acid, p-coumaric acid, ferulic acid, caffeic acid, sinapic acid, protocatechuic acid, syringic acid, and chlorogenic acid.

The exocarp of the unripe fruit contains α-aminated juglone, β-hydrogenated juglone, α-hydrogenated juglone-4-β-D-pyranoglucoside, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, juglone, 5-hydroxy-2-methyl-1,4-naphthoquinone, 5-hydroxy-3-methyl-1,4-naphthoquinone, 2.3-dimethyl-5-hydroxy-1,4-naphthoquinone, 2,3-dihydro-5-hydroxy-1,4-naphthoquinone and 2,3-dihydro-5-hydroxy-2-methyl-1,4-naphthoquinone.