Which is Not a Common Catergory of Phenolic

Question

Which is not a common catergory of phenolic?
A) Flavonoid
B) Tannin
C) Lignin
D) Terpenoid

Accepted Answer

Terpenoids are not classified as phenolics. Phenolics are a large group of plant-based compounds characterized by the presence of one or more hydroxyl groups attached directly to an aromatic hydrocarbon group. Terpenoids, on the other hand, are a large class of naturally occurring organic chemicals derived from five-carbon isoprene units assembled in various ways, and they do not have the characteristic phenolic structure.