Polyphenols are plant metabolites characterized by the presence of several phenol groups (i.e., aromatic rings with hydroxyls), which derive from L-phenylalanine (Knaggs, 2003 and Boudet, 2007).
Polyphenols are plant metabolites characterized by thepresence of several phenol groups (i.e., aromatic ringswith hydroxyls), which derive from L-phenylalanine(Knaggs, 2003 and Boudet, 2007).