Key processes of oil extraction and application of edible oil extraction machines

Some edible oils, such as olive and sunflower oils, go through an extraction process called cold-pressing, where they obtain oils naturally by crushing oilseeds at room temperature. Other oil sources, however, undergo a step-by-step extraction process to produce clear and smooth oil.

First, mill the seeds. Next, heat the meals to facilitate the extraction process. The heated meal is then fed through a screw press. Pressure increases up to approximately 20,685 kilopascals to squeeze out the oils on the slots of the press, where you collect the oils. To extract additional oils on byproducts, apply solvents such as hexane.

Unrefined oils hold a higher concentration of natural compounds

Unrefined oils do not undergo rigid processing; instead, they only need a few vegetable oil making equipment to be made. They also have a more pronounced flavor and a low smoke point. Therefore, consumers are leaning more to unrefined oils because they retain most of the natural components compared to processed oils.
The key difference, though, is that refined oils are processed to last longer than unrefined oils.