Simultaneous determination of emodin, chrysophanol, parietic acid, and magnolol in Fructus Cannabis Bolus by high performance liquid chromatography

Abstract

Objective To simultaneously determinate 4 effective components in Fructus Cannabis Bolus by high performance liquid chromatography (HPLC). Methods The column was ALLTIMA-C18 column (250 mm × 4.6 mm, 5 μm). The mobile phase was methanol (A)-0.1% phosphoric acid aqueous solution (B) in gradient elution program. The flow rate was 1.0 ml/min, the column temperature was 30℃, and the injection volume was 10 μl. The detection wavelength was set at 254 nm. Results The linear ranges of 4 effective components of emodin, chrysophanol, parietic acid, and magnolol were 9.05-81.26 μg (r=0.999 8), 13.28-119.3 μg (r=0.997 6), 8.30-75.40 μg (r=0.998 7), 6.30-61.79 μg (r=0.996 5), respectively; the average recoveries and RSDs of emodin, chrysophanol, parietic acid, and magnolol were 99.25%, 99.46%, 99.51%, 99.86%, respectively. The RSDs of emodin, chrysophanol, parietic acid, and magnolol were 2.04%, 3.23%, 1.84%, and 2.42%, respectively. Conclusions The HPLC can be used as an effective and feasible method for the determination of emodin, chrysophanol, parietic acid, and magnolol in Fructus Cannabis Bolus. The method is simple, quick, and reproducible, and can be used for the quality control of Fructus Cannabis Bolus. Key words: Assay (TCD); Fructus Cannabis Bolus; Emodin; Chrysophanol; Rhein; Magnolol; High performance liquid chromatography