Fragrances Flashcards
What are essential oils
The concentrated extracts of volatile compounds from plants that have pleasant atom is and are insoluble to water
How are essential oils produced
The process team distillation
Oils can lead to misconfusions so here are some examples
•Essential oils = found in plants and compromise of terpenes and terpenoids
•edible oils= found in plants and are made of triglycerides
•minerals oils are derived from crude oil and are made of long chain alkanes
Essential oils
•Compromised of terpenes and terpenoids
Edible oils
Made up of triglycerides (ester)
Mineral oils
Long chain alkanes
How can essential oils be extracted from water
Using an separation funnel
What happens if an impure terpene and an aqueous extract is shaken with ethyl ethanoate ?
Most of the terpene will dissolve in the ethyl ethanol and very little will remain in the aqueous layer
Impurities that are more soluble in water will move into the
Water layer
Using a separating funnel, the water layer can be removed and further treated with ethyl ethanoate
To remove more the terpene
Impurities which are more soluble in water are then
removed from the terpene
Essential oils are used in what
Perfumes
Cosmetics
Food flavourings
Solvents
Terpenes
The most abundant and main constituent of essential oils are
Terpenes
Terpenes are made of what
Isoprene units possibly with other molecules or groups attached
Terpenes can be
Unsaturated hydrocarbons or contain oxygen and be alcohols, aldehydes or ketones
What are oxygen containing terpene called
Terpenoids
Systemic name for isoprene
2-methylbuta-1,3- diene
Turpines can be oxidised within implants to produce some of the
Compounds responsible for distinctive aromas and spices
Turpin can undergo hydration reactions to
Make a wider variety of molecules
