Vegetable oils

Vegetable oils

Some fruits and seeds contain a lot of oil.
1. These oils can be extracted and used for fuel and for food
Oils can be seperated from the crushed plant materiel by using a centrifuge rather like a spin dryer getting water out of wet clothes
Distillation can be used to remove impurities, water and solvents
Vegetable oils are used in food
1. They provide a lot of energy
  1. Useful for fuels
    1. biodeisel
2. They have useful nutrients in them
3. They also contain essential fatty acids
Vegetable oils have higher boiling points than water so they can be used to cook foods at a higher temperature
1. Gives a different flavour
2. quicker
3. However, food releases more energy when eaten

Resource summary

	Created by toby_brown over 11 years ago