There are 2 kinds of walnuts categorized by the thickness of their shells, which are thin-shelled walnuts and thick-shelled walnuts.
1, thin shell walnut.
2, thick shell walnut.
Expanded Information: p>Walnut kernels are rich in nutrients, each hundred grams of protein 15-20 grams, 60-70 grams of fat, carbohydrates 10 grams; and contains essential calcium, phosphorus, iron and other trace elements and minerals, as well as carotene, riboflavin and other vitamins. The main component of fat contained in walnuts is linoleic acid glycerol fat, after eating not only will not make cholesterol rise, but also reduce intestinal absorption of cholesterol. Therefore, it can be used as a tonic for patients with high blood pressure and arteriosclerosis. In addition, these oils can also supply the brain matrix needs. Walnuts contained in the trace elements of zinc and manganese is an important component of the pituitary gland, often eaten in the brain is beneficial to the nutritional supplementation, there are brain-healthy and intellectual role. Baidu Encyclopedia - Thin-shelled Walnuts Baidu Encyclopedia - Thick-shelled Walnuts