“…Crude oils comprise a group of free fatty acids originated from the hydrolysis of the triacylglycerol molecule and consequently, mono-, diacylglycerols and glycerols molecules are also present. Additionally, a fraction of 10 phospholipids (up to 3 %wt for soybean oil), sterols (up to 1.00 %wt for primrose oil), carotenes (up to 0.05 %wt for palm oil), chlorophylls (up to 0.10 %wt for avocado oil), tocopherols and tocotrienols (up to 0.25 %wt for wheat germ oil) are commonly found, as well as several other non-lipidic compounds, minerals 15 and metal ions 10,18,20,[23][24][25] . Most of them are usually removed or reduced during the refining processes, whilst a set of them still remain on the refined final product, such as phospholipids (up to 3 mg/kg), free fatty acids (up to 0,3 %wt) and a small amount of pigments, depending on the source.…”