How is cooking oil extracted?

At present, there are two basic processes: squeezing and leaching.

Squeezing method separates oil from oil by applying physical pressure, which comes from tradition.

The oil-making method in the workshop, and now the pressing method is already an industrial operation. Extrusion method, because it does not involve

And any chemical substance is added, so that the extracted oil components remain relatively intact, but the disadvantage is oil production.

Low interest rates.

Compared with the pressing method, which is a very old production method, the selection of leaching method conforms to the relevant national standards.

Using the mutual solubility of oil and the selected solvent, the standard solvent was prepared by mixing the solvent with the treated solvent.

The grease in solid oil is dissolved by contact extraction, and the grease is removed by strict process.

The solvent in it. ?

Compared with the pressing method, the leaching method has less residual oil and higher oil yield. The processing cost is low,

Good production conditions; Oil resources have been fully utilized.

Extended data

Method for extract edible oil by ancients

Animal fat is the first way to obtain edible oil, which is extracted from animal fat. Basically, butter, sheep oil and lard are the most common.

Vegetable oil, that is, the method of extracting oil from plant oil crops, has the longest history in China. Rice bran, one of the five cereals in the Spring and Autumn Period, is the main oil-bearing crop. Sesame was used to extract oil in the Han Dynasty, which was popular because of its high oil yield.

Peanut oil is the latest vegetable oil and the most widely used edible oil in vegetable oil. Peanut oil began to appear in Qing Tan Cui's "Reclamation": groundnut is the first fruit in the south and is the most widely used among the people.

Baidu encyclopedia-oil pressing

Baidu encyclopedia-leaching oil