ACT NO. 14: Assay of Volatile Oil

Question 1

All vegetable oils are termed “_______ oils” in USP-NF.

Answer 1

fixed oils

Question 2

These are secondary metabolites that plants produce for protection from pests and predators, attraction of pollinators, or seed dispersal.

Answer 2

Essential oils

Question 3

The number of mg of potassium hydroxide required to saponify the esters in 1.0 g of the substance.

Answer 3

Ester Value

Question 4

These possess a common chemical structure comprising an aromatic ring with one or more hydroxyl substituents that can be divided into several classes, and the main groups of phenolic compounds include flavonoids, phenolic acids, tannins, stilbenes, and lignans.

Answer 4

Phenolic Compounds

Question 5

These are important plant constituents with redox properties responsible for ANTIOXIDANT activity.

Answer 5

Phenolic compounds