Bioflavonoids, also known as vitamin P due to their effect on vascular permeability,1 are a group of compounds that are found throughout many plants, fruits, vegetables, and leaves. Bioflavonoids belong to the polyphenol group of plant compounds2 which are an extensive group of phytochemicals produced by plants in response to stress as a plant defence mechanism.3 To date over 8,000 different polyphenols have been identified.3 Though polyphenols differ in chemical structure, all share the same structural feature of an aromatic ring and at least one hydroxyl group.3 (See Figure 1)
Quercetin is a naturally occurring compound belonging to a class of substances known as bioflavonoids, which are widely recognised for their potent antioxidant, anti-inflammatory and anti-allergic benefits.
