Aromatherapy Essential Oil Extraction Methods

Question 1

Which extraction method uses steam to release volatile compounds from plant material?

Accepted Answer

Steam distillation

Answer

Cold pressing

Answer

Solvent extraction

Answer

Enfleurage

Question 2

What water-based byproduct is produced alongside essential oil during steam distillation?

Accepted Answer

Hydrosol (floral water)

Answer

Absolute

Answer

Concrete

Answer

Carrier oil

Question 3

Which extraction method is primarily used for producing citrus essential oils such as lemon and sweet orange?

Accepted Answer

Cold pressing (expression)

Answer

Steam distillation

Answer

CO2 extraction

Answer

Solvent extraction

Question 4

What is an 'absolute' in aromatherapy production?

Accepted Answer

A highly concentrated aromatic extract obtained using chemical solvents

Answer

An essential oil extracted only by steam distillation

Answer

A carrier oil infused with essential oils

Answer

An essential oil certified as 100% pure

Question 5

Which extraction method is considered to best preserve the complete natural chemical profile of the plant due to low operating temperatures?

Accepted Answer

Supercritical CO2 extraction

Answer

Steam distillation

Answer

Cold pressing

Answer

Water distillation

Question 6

What is the primary purpose of the traditional extraction technique known as 'enfleurage'?

Accepted Answer

Capturing fragrance from delicate flowers that cannot withstand heat

Answer

Extracting citrus oils from peels mechanically

Answer

Purifying essential oils through repeated filtration

Answer

Blending multiple essential oils into a single compound

Question 7

Which part of the lavender plant is most commonly used as the source material in steam distillation?

Accepted Answer

Flowering tops

Answer

Roots

Answer

Seeds

Answer

Bark