>Care to link it? Edible oil refining is a set of processes or treatments necessary to turn vegetable raw oil into edible oil. https://en.wikipedia.org/wiki/Ed

>Care to link it? Edible oil refining is a set of processes or treatments necessary to turn vegetable raw oil into edible oil. https://en.wikipedia.org/wiki/Edible_oil_refining https://en.wikipedia.org/wiki/Edible_oil_refining >What makes it "chemical"? Does the refinement process chemically alter the molecular structure of the lipid molecules? The process uses chemicals as opposed to physical interventions, which is why it is called chemical refinement. Chemicals used in this process can include: phosphoric, citric, sulfuric or hydrochloric acids, EDTA, bleaching earth/bentonite, phospholipase enzymes, caustic soda and silica, plus high temperatures up to 240C. Did you watch the video? Chemical refining is the traditional method used since ancient times. It can be used for all fats and oils. Each step of the refining process has specific functions for removing some undesirable compounds. Chemical refining follows the six-step process outlined at the link (degumming, neutralization, washing and drying, bleaching, dewaxing, and deodorizing). The process also removes the important bioactive molecules in oil such as tocopherols and polyphenols (which can act as antioxidants), squalene and sterols.