Fatty acids in edible oil contain linoleic acid and linolenic acid. The main function of linoleic acid is to lower cholesterol. There is more linoleic acid in corn oil, which has been used as a medicinal oil to lower blood cholesterol. Essential fatty acids are indispensable components for the development of brain and sperm, which have special effects such as reducing blood lipid, resisting platelet aggregation, delaying thrombosis, protecting cerebral vessels and resisting cancer, and are of great value for the prevention and treatment of cardiovascular and cerebrovascular diseases.
1. Sunflower seed oil is characterized by outstanding flavor, in which linoleic acid content can reach 60%, and linoleic acid belongs to n-6 polyunsaturated fatty acid. Considering the diet structure and fatty acid balance of China people, there is a risk of excessive intake.
2. Corn oil is characterized by more polyunsaturated fatty acids and more vitamin E. If it is corn germ oil, there may be more phytosterols and other ingredients that help reduce blood fat. However, it should be noted that corn oil is not heat-resistant, more suitable for salad dressing or salad oil, and the linoleic acid content is also high.
Palm oil is the most difficult to be oxidized in ordinary vegetable oil, and can be fried at high temperature, but frying itself is not recommended.
4. Peanut oil is not harsh on oil temperature, and it can be used in general cooking, with better taste, but considering the diet structure of Chinese people, the fatty acid structure of peanut oil is far from healthy. It is suggested to choose peanut oil with commercially available pressing technology instead of pressing oil by yourself. If you really like squeezing yourself, you must choose fresh and hygienic peanuts to reduce the pollution of aflatoxin, a strong carcinogen.
5. Common edible oil, mainly linoleic acid, has a healthy fatty acid structure, and genetically modified soybean oil is also very cheap. But linoleic acid, especially linolenic acid, is not suitable for high temperature. Frying, frying, boiling and frying will make it oxidize and polymerize, producing substances harmful to the body. So soybean oil is only suitable for cooking and stewing.
6. Sesame oil is sesame oil, which retains a lot of fat-soluble nutrients in sesame. In addition, the fatty acid structure is similar to peanut oil.
7. The composition of tea seed oil is similar to olive oil, even slightly more monounsaturated fatty acids. Because it is mainly made in China, it is also cheaper.
8. Olive oil is an important part of the Mediterranean diet mode highly praised by nutritionists at present, and it is rich in monounsaturated fatty acids; As edible oil, it helps to balance the overall dietary fatty acid ratio and reduce inflammation. In addition, even the best oil has to be limited.