bioflavinoid

Flavonoids are a class of non-nitrogenous biological pigments found extensively in plants, but rarely in animals. These water-soluble phenolic compounds are located in plant cell vacuoles and are responsible for various colors in plants, such as the yellow of flower petals (anthoxanthins) and the red, purple, and blue hues of autumn leaves and buds (anthocyanins).12

While their exact physiological functions are not definitively established, flavonoids may protect plants from ultraviolet radiation and act as antioxidants. They also play a role in attracting pollinators like bees and butterflies, aiding in fertilization, and in attracting animals to fruits for seed dispersal. Flavonoids can also influence how plants interact with nitrogen-fixing bacteria in their roots.1