Walnut oil content is as high as 65% to 70%, which is the highest oil content among edible woody oils in my country, and is known as the "oil depot on the tree". Walnut oil is a vegetable oil made from walnut kernels through pressing, refining and purification. It is yellow or brown in color and is a high-grade edible cooking oil in people's daily lives. It is as popular as olive oil and tea seed oil. Image source: "Healthy Life from Oil" Walnut oil contains more than 65% essential fatty acids, including 57.9% linoleic acid and 7.6% alpha-linolenic acid. Alpha-linolenic acid is a precursor of DHA and can be converted into DHA in the body. It is very important for the healthy development of the brain, retina and kidney function of fetuses and infants. In addition, walnut oil is rich in phospholipids, which can increase cell activity, improve memory and intelligence, and are also essential nutrients for the development of infant brain nerves and visual functions. The trace elements zinc and manganese contained in walnut oil are key components of the pituitary gland. Therefore, walnut oil has the function of strengthening the brain to a certain extent. Since the content of linoleic acid and α-linolenic acid in walnut oil is as high as over 65%, and both are polyunsaturated fatty acids and are easily oxidized, special attention should be paid to prevent oxidation and deterioration of walnut oil during storage and consumption. |
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