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Bleaching earth is used in the refining of vegetable oils and animal fats for human con- sumption. The absorbent capacity of the bleaching earth removes the impurities and unwanted matter, such as colouring substances (carotenoids), soaps, proteins and others, found in oils and fats.
Removing impurities like soap & trace metals without affecting appearance, flavour & nutritional properties of Oil.
Bleaching earth made of:
Bleaching earth is a very fine powder and its main component is silicon dioxide (∼57% and more depending on the type). It is prepared by treating montmorillonite clay (represented by Al2O3·4SiO2·nH2O) with mineral acids and by eluting basic components such as aluminium, iron and magnesium.