Author(s): B. B. S. Kapoor, Renu Bansal

Abstract: Evaluation of flavonoid contents from four selected medicinal tree species growing in Nagaurdistrict of Rajasthan like Acacia tortilis, Prosopis cineraria, Salvadora persica and Tecomella undulata was carried out. The leaves of selected trees collected from threedifferent sites of study area were analysed for flavonoid contents i.e. Quercetin and Kaempferol. Flavonoid contents like Quercetin and Kaempferol were isolated and identified. Among all the plant samples tested the total flavonoid contents were found maximum (7.75 mg/g.d.w.) in the leaves of Tecomella undulata from Khinvsar area and minimum (2.18 mg/g.d.w.) in the leaves of Acacia tortilis from Alaye are.