The composition of fatty acids in sunflower oil due to climatic conditions, sunflower oil produced in cold areas containing about 15% oleic acid, linoleic acid 70% or so; sunflower oil produced in warmer areas containing about 65% oleic acid, linoleic acid 20% or so. The human digestibility of sunflower oil is 96.5%, and it is rich in linoleic acid, which has the effect of significantly lowering cholesterol, preventing hardening of blood vessels and preventing coronary heart disease. In addition, the content of a tocopherol, which is the most physiologically active in sunflower oil, is higher than that of general vegetable oil. And the ratio of linoleic acid content and vitamin E content is more balanced, which is easy to be absorbed and utilized by the human body.

So, sunflower oil is a high nutritional value, good for human health, excellent cooking oil.

Two: Soybean oil:

Soybean oil contains a large amount of linoleic acid. Linoleic acid is an essential fatty acid and has important physiological functions.

Soybean oil in addition to fat, in the process of processing also brought into some non-oil substances, in the unrefined oil contains 1% -3% of the phospholipids, 0.7% -0.8% of the sterols and a small amount of protein and wheat germ phenol and other substances, prone to cause rancidity, so soybean oil is not hydrated to remove impurities, is not suitable for long-term storage. In addition, refined soybean oil in long-term storage, the oil color will gradually become darker from light, the reason may be related to the automatic oxidation of fats and oils, therefore, soybean oil color becomes darker, it is not suitable for long-term storage.

In general, sunflower oil is better than soybean oil.