There are many ways of edible oil bleaching process,the most widely used in industrial production is the adsorption decolorization. In addition, heat bleaching, oxidation bleaching, bleaching and other chemicals. In fact,in the oil refining process, oil bleaching removal does not depend on decolorization section, alkali refining, sour refining, hydrogenation, deodorization section, there are auxiliary bleaching effect.
Decolorization section not only mainly removal fat of pigment, but also can remove grease trace metals, remove gum and some smelly substances.
Oil bleaching purposes is not intended to remove all colors, but that improved oil color and provide qualified raw material for oil deodorized oil.