Section H Flashcards
What is an essential oil?
A mixture of organic compounds that have distinctive aromas
Where do essential oil come from?
Concentrated extracts of the volatile, non-water soluble aroma compounds from plants
Where are essential oils used?
Perfumes, cosmetics, cleaning products and flavouring in foods
How can essential oils be extracted?
Steam distillation
What is a terpene?
Unsaturated compounds bag are made up of isoprene units
Where are terpenes used?
A key component of most essential oils and found in a wide variety of fruit and flora flavours and aromas
What is an isoprene unit?
Five carbons
What happens when a terpene is oxidised in plants?
This can add a hydroxyl group, an aldehyde or a ketone
What is solvent extraction used for?
To separate a substance from a mixture where he desired substance is more soluble in organic solvents than in water, or vice Verda
Describe an extraction method?
The substance that doesn’t dissolve in water with dissolve in an organic solvent, and a separating funnel is used to speedster the two layers, then the water layer is further extracted to get more from the water layer.
