Walnuts have high nutritional value

Walnuts contain higher levels of protein, calcium, phosphorus, iron and trace elements than pecans. Walnuts, almonds, cashews and hazelnuts are also known as the world-famous "four major dried fruits". Walnut kernels are rich in nutrients, containing 15 to 20 grams of protein per 100 grams, more fat, and 10 grams of carbohydrates. They also contain various trace elements and minerals such as calcium, phosphorus, and iron necessary for the human body, as well as carotene, nuclear Flavin and other vitamins.

Things to pay attention to when purchasing walnuts are as follows:

1. Pay attention to the texture: high-quality walnuts have relatively more texture and are not deep because of the nutrients absorbed by the walnuts during their growth. They are all transported by lines. The more lines there are, the more nutrients there are in the walnuts. The shells of inferior walnuts are very smooth, with almost no natural lines visible.

2. Pay attention to the taste: We can judge whether the walnuts are fresh and edible by smelling them. High-quality walnuts should have no peculiar smell. Walnuts that can smell a peculiar smell mean they have gone rancid and cannot be eaten. In addition, you need to be especially careful about whether walnuts have a slightly chemically irritating smell, because some unscrupulous vendors will soak walnuts in chemicals such as hydrogen peroxide to make the appearance of the walnuts smooth and beautiful, which will affect people's health once they are eaten.