1, peanut oil
The main raw material of peanut oil is peanut. Light yellow and transparent in color, clear in color and fragrant in smell.
Advantages: It is beneficial to health, can appropriately relieve fatigue, resist aging, delay the decline of brain function, lower blood pressure and stop bleeding, lower cholesterol, and prevent and treat various hemorrhagic diseases.
Disadvantages: Too much fat can easily block blood vessels, cause obesity, lead to indigestion, and increase the incidence of cancer such as breast cancer.
It is too high in calories and high in fat. Of course, it is more suitable for cooking and frying food.
2. Rapeseed oil
The main raw material of rapeseed oil is rapeseed on rape flowers that we often see on the road, and the color is golden yellow or brownish yellow. The smell is pungent.
Advantages: eliminating internal heat and edema.
Disadvantages: It is an oil with high erucic acid content, and whether it will cause damage to the heart is still controversial. It is not recommended for patients with hypertension.
Oil has a certain shelf life. If it is stored for a long time, it is not recommended to eat it. Don't eat it repeatedly after heating at high temperature, the smell is too pungent and not suitable for cold salad.
3. Soybean oil
The main raw materials of soybean oil are soybeans and beans. The color mainly depends on the variety of soybean, and the smell is mellow.
Advantages: Smooth skin, growth and development, prevention and treatment of cardiovascular and cerebrovascular diseases and cataracts.
Disadvantages: the color of refined soybean oil will change after long-term storage, that is, the color will gradually change from light to dark.
This shows that oil may be combined with oxygen in the air and oxidized. Therefore, when the color becomes darker, it is no longer suitable for long-term storage.