Refining of sunflower oil on a medium scale

By Theresa Siebert, Petrus Britz, Pr Eng and Agrelek Crude oils and fats, especially vegetable oils, contain various kinds of extraneous matter such as dirt, moisture, gums, waxes, carbohydrates, proteinaceous material, pigments, flavouring substances, trace metals, antioxidants (commonly called tocopherols or vitamin E), free fatty acids and other unwanted[...]