6.1 Extracting vegetable oil
Some seeds , nuts and fruits are Rich in Vegetable oils. The oils can be extracted by crushing and pressing the plant material, followed by removing water and other impurities.
When eaten Vegetable Oil can provide us with a lot of energy and important nutrients. They also release a lot of energy when burned so they can be used as fuels.
· Molecules in vegetable oil have hydrocarbon chains. Those carbon-carbon double bonds(C=C) are unsaturated. Several double bonds in each molecule, this is called Polyunsaturated. Unsaturated oils react with bromine water, turning from orange to colourless.