Mapa mental
Extracting Oils from Plants
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Extracting Oils from Plants
Some fruits and seeds contain a lot of oil
- Oily fruits: - avocados - olives
- Oily seeds: -brazil nuts -peanuts -sesame seeds
- These oils can be extracted by crushing the plant material, pressing them between metal plates and squashing the oil out to be used for food or fuel. This is the traditional method for olive oil
Oil can be separated from crushed plant material by a centrifuge - like using a spin-dryer to get water out of wet clothes
- solvents are used to get oil from plant material
Distillation refines oil, and removes water, solvents and impurities