Polyphenols

Polyphenols are a diverse class of naturally occurring bioactive compounds found in plants, categorized into four main groups: flavonoids (e.g., quercetin, catechins), phenolic acids, stilbenes (e.g., resveratrol), and lignans. They act as secondary metabolites that protect plants from environmental stressors like UV radiation and pathogens. In human nutrition, they are considered non-essential but highly beneficial micronutrients that contribute to the prevention of chronic diseases and the promotion of healthy aging.