nutritive 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 contains 22. 18% crude protein, of which glutamic acid is the main soluble protein, followed by arginine and walnut aspartic acid. Crude fat is 64.23%, of which neutral fat accounts for 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; The unsaponifiable part of sterol ester is mainly β-sitosterol, and a small amount of rapeseed sterol, stigmasterol, oat sterol -5- enol and stigmasterol -7- dilute alcohol; Sugar13%; A variety of free essential amino acids.

Isoleucine, leucine, tryptophan, phenylalanine, valine, threonine and lysine. Its content accounts for 47.50% of the total amino acids.

The fruit contains 1, 4- naphthoquinone, juglone, 4- hydroxy-1- naphthyl -β-D- glucopyranoside, 4,8-dihydroxy-1- naphthyl -β-D- glucopyranoside, potassium, calcium, iron and manganese.