The average protein content of Xinjiang's main walnuts is 19.35%, and the average fat content is 60.91%. Compared with walnuts in other parts of the country, it has the characteristics of high protein content and low fat content. The fatty acid composition is palmitic acid, oleic acid, linoleic acid, α-linolenic acid and stearic acid. The average content of unsaturated fatty acids is 90.45%, polyunsaturated fatty acids are 66.19%, and the ratio of linoleic acid (ω-6)/α-linolenic acid (ω-3) meets the WHO recommended value. The amino acid variety is complete and the total content is high. The essential amino acid content accounts for 27% to 30% of the total amino acid content, and the SRC is between 68.85 and 78.40. The first limiting amino acid of walnut protein is lysine.
