RH Herbal Formula Compounding 2

Question 1

Which extraction method is most appropriate for isolating volatile oils from aromatic herbs?

Accepted Answer

Steam distillation

Answer

Steam distillation efficiently separates volatile oils by using steam to carry them into a condensate without degrading heat-sensitive aromatic compounds.

Question 2

When compounding a formula for a client with a latex allergy, which herb should be used with caution?

Accepted Answer

Ficus carica

Answer

Ficus carica (fig) contains latex-like compounds and cross-reactivity with latex allergies has been documented.

Question 3

A tincture made with a 1:5 ratio means:

Accepted Answer

1 gram herb per 5 ml menstruum

Answer

A 1:5 ratio indicates 1 gram of dried herb is extracted in 5 ml of menstruum, producing a weaker concentration than a 1:2 preparation.

Question 4

What is the primary purpose of adding a demulcent herb to a formula targeting the respiratory tract?

Accepted Answer

To soothe and protect irritated mucous membranes

Answer

Demulcent herbs contain mucilaginous polysaccharides that coat and soothe irritated mucosal tissues, reducing inflammation and discomfort.

Question 5

Which solvent percentage is generally recommended for extracting alkaloids from plant material?

Accepted Answer

60–80% ethanol

Answer

Alkaloids are best extracted at 60–80% ethanol, which balances water solubility of alkaloid salts with ethanol's ability to penetrate cell walls.

(RH) Registered Herbalist Practice Test

(RH) Registered Herbalist Practice Test

RH Herbal Formula Compounding 2