A simple and robust high-performance liquid chromatography coupled to a diode-array detector method for the analysis of genistein in mouse tissues

Abstract A simple liquid–liquid extraction procedure and quantification by high-performance liquid chromatography (HPLC) method coupled to a diode-array detector (DAD) of genistein (GEN) was developed in various mouse biological matrices. 7-ethoxycoumarin was used as internal standard (IS) and peaks were optimally separated using a Kinetex C18 column (2.6 μm, 150 mm × 2.10 mm I.D.) at 40 °C with an isocratic elution of mobile phase with sodium dihydrogen phosphate 0.01 M in water at pH 2.5 and methanol (55:45, v/v), at a flow rate of 0.25 mL/min. The injection volume was 10 μL. In all cases, the range of GEN recovery was higher than 61%. The low limit of quantification (LLOQ) was 25 ng/mL. The linearity of the calibration curves was satisfactory in all cases as shown by correlation coefficients >0.996. The within-day and between-day precisions were