It can be possible for phenolic content of the extract to be lesser than the flavonoid content provided flavonoids present in the extract are in the flavonoid sub-classes flavones and flavanones which are not phenolics

according to the biosynthetic pathway within your plant and environmental diversity of plant, phenolic content of the extract will be more or less than the flavonoid content and flavonoid, like tannins are subclasses of polyphenolic compounds.

exactly, polyphenolic amount bigger than flavonoids. flavonoids are part of polyphenols. flavonoids not increase absolutely in polyphenols.

also, there are a differences between polyphenols and phenol content

Dear All,

Thank you very much for your answer.