Table 2: Characteristics of the Calibration Lines (y = ax + y0) of RP-HPLC Quantitative Determination of Quercetin, Apigenin-7-O-Glucoside and Rutin

Compound a (Slope) y0 R2
Quercetin (03) 51077 3701 0.9993
Apigenin-7-O-glucoside (02) 66236 8101 0.9991
Rutin (01) 71362 2246 0.9995