The total flavonoid and total phenolic contents
were determined by using the Dowd method and Folin–Ciocalteu method, respectively. For that the linear curves were determined using different concentration of quercetin and gallic acid. The slop of linear curve was calculated by the following equation
y = 0.06 x + 0.057 (r2 = 0.998) for total flavonoid content determination y = 0.096 x + 0.034 (r2 = 0.999) for total
phenolic content determination
The result showed that leaves contain maximum amount of flavonoids and phenolic contents (0.019 and
0.057% w/w, respectively) as compared to roots and stems.