There are many kinds of vegetable oil, such as soybean oil, peanut oil, corn oil, rapeseed oil and sunflower oil .These oils contain more polyunsaturated fatty acids and vitamin E, among which soybean oil has the highest content, and also contains many inorganic salts and trace elements such as potassium, sodium, calcium, phosphorus, iron, zinc, manganese and selenium . The superior cooking oil that sells on the market which is made from above grease as raw material, and after 5 take off, 6 take off refine and then we get the cooking oil . The so-called take of refining is deacidification, degumming, deodorization, decolorization, dewaxing, deoxidization, that is to remove the all harmful substances and not conducive to preservation substances .According to international standard, peroxide content does not exceed 0.15%, more than 5 take off oil is international advanced cooking oil. Our country market sells . the best fragrance oil, the green treasure brand advanced cooking oil, flamingo salad oil, camel wheat and so on reached this standard. .
In recent years, the living standard of the people has been greatly improved, from the type of food and clothing gradually to the type of well-off life , animal food intake more and more in the daily diet , every family table of food on the side of food species more and more rich, so that the supply of fat greatly increased. A large number of epidemiological data show that the fat content in the diet has a certain relationship with the incidence of cancer. The daily fat supply standard should be 20 ~ 25% of the total thermal energy. Too much vegetable oil is bad for your health. . For example, the higher content of mustard acid in rapeseed oil has the effect of causing cardiomyopathy in the human body. Peanut oil contains a small amount of sweet potato acid, which can cause coronary atherosclerosis. The dangerous component in vegetable oil, peroxide fat also can cause liver cirrhosis, gastric ulcer, easy to cause senile disease.Therefore, the intake of vegetable oil at ordinary times should not be excessive.