Seedlings of Premna integrifolia contain traces of quercetin in their roots

Premna integrifolia belongs to family Verbenaceae and contains flavonoid quercetin having several medicinal applications. Quercetin is useful in improvement of cardiovascular health, eye diseases, allergic disorders, arthritis and reducing risk for cancers. The study was conducted to ascertain the variation of quercetin content in the roots of P. integrifolia at three different growth stages i.e. seedling, pole and tree. The root extract of three stages were analyzed for estimation of quercetin content by using HPLC. It was observed that among three growth stages, the maximum content of quercetin was recorded in tree stage (6.16 μg ml⁻¹) following by pole (5.64 μg ml⁻¹) and seedlings (4.60 μg ml⁻¹).