Identification and separation of some flavonoids from blueberry leaves

Flavonoids are phenolic pigments that contain in their molecule a pyranic or furanic heterocycle condensed with a benzene ring. Another benzene ring is attached to the heterocycle. The rings have hydroxyl groups, which determines the phenolic character of these pigments. Flavonoid deficiency can be very common today and in today's society because people don't eat enough fresh fruits and vegetables, eat more on the run, or prefer fast food. Also, overcooking food is a major contributing factor to the flavonoid deficiency that many of us experience.