The first grade of soybean oil is the best. First-grade soybean oil is a first-grade high-quality soybean oil. It is the soybean oil with the highest quality standards. It has the highest degree of refining and the least impurities and residues, which can better protect our health.

The production methods of first-grade soybean oil are also different. The soybean oil on the market now is mainly produced by pressing and leaching. Pressing is a physical method used by soybean oil manufacturers to process soybeans. To produce soybean oil, leaching is to chemically process soybeans to produce soybean oil.

Both methods of production have their own advantages and disadvantages. The amount of soybean oil produced by pressing is less, and the oil yield of soybean oil produced by leaching is higher than that of pressing, but the soybean oil produced by leaching It will contain certain chemical residues.

Advantages and disadvantages of soybean oil:

Advantages: Soybean oil is dominated by linoleic acid, contains a small amount of α-linolenic acid, and very little saturated fatty acid. Linoleic acid has a limited effect on reducing the risk of heart disease, but alpha-linolenic acid is more beneficial.

Clinical nutrition experiments have confirmed that, in addition to high cholesterol, the other two risk factors for coronary heart disease are high blood pressure and vascular embolism. Linolenic acid can reduce these two factors. Soybean oil is rich in vitamin E, and the light yellow color comes from a small amount of carotene.

Disadvantages: Since both linoleic acid and linolenic acid are not heat-resistant, linolenic acid is particularly resistant to heat. It is prone to oxidation and polymerization after frying or repeated heating, which is very harmful to health.

Reference for the above content? Baidu Encyclopedia - National Quality Standard for Soybean Oil

Reference for the above content? People's Daily Online - Soybean Oil Should Be Stewed, Chinese People's Guide to Healthy Eating Oil