1, suitable for different cooking methods.
Peanut oil is most suitable for cooking, stir-frying, stir-frying, soup making and so on.
Rapeseed oil is more suitable for stewing and frying.
Soybean oil is not suitable for high-temperature frying or stir-frying, but for low-temperature cooking, such as mixing stuffing, making some pasta and so on.
Corn oil is more suitable for high-temperature frying. One characteristic of corn oil is that the fried food can keep its original color and flavor, which will not make the food have oily taste or cause the loss of nutrition in the food.
2. The nutrients contained are different.
Peanut oil consists of 20% saturated fatty acids and 80% unsaturated fatty acids, mainly oleic acid, linoleic acid and palmitic acid. The iodine value is about 80 ~ 1 10.
The main components of rapeseed oil are oleic acid, linoleic acid, linolenic acid, tocopherol and rapeseed sterol. Rapeseed oil contains oleic acid and linoleic acid which are beneficial to human body, ranking first among all kinds of vegetable oils.
Soybean oil not only contains fat, but also contains some non-oil substances during processing. Crude oil contains 1%-3% phospholipids, 0.7%-0.8% sterols and a small amount of protein and wheat germ phenol.
Corn oil is rich in vitamins, minerals and a large number of unsaturated fatty acids, mainly oleic acid and linoleic acid, which can reduce serum cholesterol and prevent arteriosclerosis, and has a certain auxiliary effect on preventing "three highs" and complications. Corn oil is rich in vitamin E as its main feature.
3. Squeeze extraction methods are different.
Peanut oil can be divided into leaching peanut oil and pressing peanut oil according to production technology. Leached peanut oil is the oil made by solvent leaching, and pressed peanut oil is the oil made by pressing method.
Rapeseed oil can be divided into pressed rapeseed oil and leached rapeseed oil.
Soybean oil is only used as a leaching process to make oil: the leaching method is to fully soak the oil raw materials with solvent oil (No.6 light gasoline), then extract the oil raw materials at high temperature, and then go through the "six-removal" process (i.e. degreasing, degumming, dehydration, decoloration, deodorization and deacidification). The biggest feature is high oil yield and low production cost, which is one of the reasons why the price of soybean salad oil is generally lower than that of pressed oil.
Corn oil is extracted at low temperature and has good stability.