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Leaching and pressing are two oil-making processes. According to the different oils, you can choose different production processes. In general, such as sesame, peanuts, olives, rapeseeds, etc. themselves are oil crops with higher oil content, you can choose the pressing method to make oil; but the oil content of soybeans, rice bran, etc. At least the oil is made by leaching method.

The leaching method of oil production is based on the principle of extraction, using the mutual solubility properties of oils and organic solvents to extract and dissolve the oils, and then go through a strict process to remove the solvents. Squeezing oil is to squeeze the grease out of the oil with the help of mechanical external force.

Consumers believe that "extracted oil" is not as safe as "squeezed oil" because they worry that the solvent residues in the extracted oil will be harmful to the human body.

At present, the extraction solvent used by my country's oil processing enterprises is a special solvent for oil processing, commonly known as light gasoline, which is far different from ordinary gasoline. No matter what process is adopted, the oil obtained is only crude oil, also called crude oil, which is not edible. It needs to undergo refining processes such as desolventization, deacidification, degumming, decolorization, deodorization, and degreasing to produce products that meet quality standards and hygienic standards. Of cooking oil. Therefore, whether it is pressed oil or leached oil, as long as it meets the oil quality standards and safety standards, it is a qualified and safe edible oil.