1, peanut oil

Peanut oil is light yellow, transparent, clear in color, fragrant and delicious, and it is an easy-to-digest edible oil. Peanut oil contains more than 80% unsaturated fatty acids (including oleic acid 4 1.2% and linoleic acid 37.6%). In addition, it also contains 19.9% saturated fatty acids such as palmitic acid, stearic acid and arachidic acid.

Judging from the above, peanut oil has a good fatty acid composition and is easily digested and absorbed by the human body. According to foreign data, the use of peanut oil can decompose cholesterol in human body into bile acid and excrete it, thus reducing the cholesterol content in plasma. In addition, peanut oil also contains sterols, wheat germ phenol, phospholipids, vitamin E, choline and other substances beneficial to the human body. Regular consumption of peanut oil can prevent skin wrinkles and aging, protect blood vessel walls, prevent thrombosis, and help prevent arteriosclerosis and coronary heart disease. Choline in peanut oil can also improve the memory of human brain and delay the decline of brain function.

2. Rapeseed oil

Rapeseed oil is generally dark yellow or brown. Rapeseed oil contains 0.4- 1.0% arachidic acid, 0.4-19% oleic acid, 0.2-24% linoleic acid, 3 1-55% erucic acid and 0/-linolenic acid. In terms of nutritional value, the digestibility of rapeseed oil can be as high as 99%, which is beneficial to gallbladder function. When the liver is in a pathological state, the human body can also metabolize rapeseed normally. Rapeseed oil lacks essential fatty acids such as linoleic acid, and its fatty acid composition is unbalanced, and its nutritional value is lower than that of ordinary vegetable oil. In addition, rapeseed oil contains a lot of erucic acid, glucosinolates and other substances, which are generally considered to be unfavorable to human growth and development. If it can be eaten with high-quality edible oil rich in linoleic acid, its nutritional value will be improved

3. Sesame oil

Sesame oil includes common sesame oil and ground sesame oil, both of which are made of sesame oil. The fatty acids of oil extracted from sesame, whether sesame oil or ground sesame oil, generally contain oleic acid 35.0-49.4%, linoleic acid 37.7- 48.4% and arachidic acid 0.4- 1.2%. The digestion and absorption rate of sesame oil reached 98%. Sesame oil contains no harmful ingredients, but it is especially rich in vitamin E and linoleic acid. Regular consumption of sesame oil can regulate capillary permeability, strengthen the oxygen absorption capacity of human tissues, improve blood circulation, promote gonadal development, delay aging and maintain youthful appearance. Therefore, sesame oil is a high-quality edible oil with good edible quality and high nutritional value.

4. Cottonseed oil

Refined cottonseed oil is generally orange-yellow or brown, and the fatty acids contain palmitic acid 2 1.6-24.8%, stearic acid 1.9 -2.4%, arachidic acid 0.1%,oleic acid 18.0-30.7% and linoleic acid 44. Cotton clear oil contains a lot of essential fatty acids, and it is best to mix with animal fat, because the linoleic acid content in cotton clear oil is particularly high, which can effectively inhibit the rise of cholesterol in blood and maintain human health. The absorption rate of cotton oil in human body is 98%.

5. sunflower seed oil

The refined sunflower seed oil is clear and beautiful pale yellow or bluish yellow, with fragrant smell and pure taste. The composition of fatty acids in sunflower seed oil is influenced by climatic conditions. Sunflower seed oil produced in cold areas contains about 65438 05% oleic acid and 70% linoleic acid. Sunflower seed oil produced in warm areas contains about 65% oleic acid and 20% linoleic acid. The digestibility of sunflower seed oil is 96.5%. Rich in linoleic acid, it can significantly reduce cholesterol, prevent arteriosclerosis and prevent coronary heart disease. In addition, the content of tocopherol A with the strongest physiological activity in sunflower seed oil is higher than that in general vegetable oil. Moreover, the ratio of linoleic acid content to vitamin E content is relatively balanced, which is convenient for human body to absorb and utilize. Therefore, sunflower seed oil is an excellent edible oil with high nutritional value and beneficial to human health.

6. Linseed oil

Linseed oil is also called linseed oil. Linseed oil contains 9- 1 1% saturated fatty acid, 13-29% oleic acid, 15-30% linoleic acid and 44-6 1% linolenic acid. Linseed oil has a special smell, and its edible quality is not as good as peanut oil, sesame oil and sunflower oil. In addition, because it contains too much flax oleic acid, its storage stability and thermal stability are poor, and its nutritional value is also lower than that of edible oil mainly composed of linoleic acid and oleic acid.

7, safflower seed oil

Safflower seed oil contains 6% saturated fatty acid, 2 1% oleic acid and 73% linoleic acid. Because its main component is linoleic acid, its nutritional value is particularly high, which can prevent the deposition of human serum cholesterol on the blood vessel wall and prevent atherosclerosis and cardiovascular diseases. In the pharmaceutical industry, safflower seed oil can be used to make drugs to prevent and treat cardiovascular diseases, hypertension, liver cirrhosis and other diseases, such as Yishouning. In addition, safflower seed oil also contains a large number of medicinal components such as vitamin E, oryzanol and sterol, so it is known as a new "healthy oil" and "healthy nutritional oil".

8. Soybean oil

Soybean oil is dark in color and has a special bean smell; Thermal stability is poor, and more foam will be produced when heated. Soybean oil contains more flax oleic acid, which is easy to oxidize and deteriorate, resulting in "beany smell". In terms of edible quality, soybean oil is not as good as sesame oil, sunflower oil and peanut oil.

In terms of nutritional value, soybean oil contains 7- 10% palmitic acid, 2-5% stearic acid, 1-3% arachidic acid, 22-30% oleic acid, 50-60% linoleic acid and 5-9% linolenic acid. Soybean oil has a good fatty acid composition and is rich in linoleic acid, which can significantly reduce the serum cholesterol content and prevent cardiovascular diseases. Soybean also contains a lot of vitamin E, vitamin D and rich lecithin, which is very beneficial to human health. In addition, the human body's digestion and absorption rate of soybean oil is as high as 98%, so soybean oil is also an excellent edible oil with high nutritional value.