Simultaneous Determination of 8 Flavonoid Glycosides in Sedum bulbiferum by HPLC / 中国药房

ABSTRACT

OBJECTIVE：To establish a metho d for sim ultaneous determination of 8 flavonoid glycosides in Sedum bulbiferum . METHODS：HPLC method was adopted to determine the contents of kaempferol- 3-O-β-D-glucopyranoside-（1→2）-α-L-glucopy- ranoside-7-O-α-L-glucopyranoside（KGGR），kaempferol-3-O-β-D-glucopyranosyl-7-O-α-L-rhamnopyranoside（KGR），quercetin-3- O-α-L-rhamnose-7-O-α-L-rhamnoside（QRR），BulbiferumosideⅡ，kaempferol-3-O-（6-coumarinyl）-β-D-glucose-（1→2）-β-D-glu- cose-7-O-α-L-rhamnoside（KcGGR），kaempferol-3-O-（2-β-D-glucose）-α-L-rhamnose-7-O-α-L-rhamnoside（KGRR），kaempferol-3- O-α-L-rhamnoside-7-O-α-L-rhamnoside（KRR），kaempferol-3-O-（6″-acetyl-β-D-glucose）-7-O-α-L-rhamnoside（KaGR）in S. bulbi- ferum. The determination was performed on Waters CORTECS C 18 column with mobile consisted of acetonitrile - 0.1％ phosphoric acid water solution （gradient elution ）at the flow rate of 0.8 mL/min. The detection wavelength was set at 254 nm，and column temperature was 35 ℃. The sample size was 5 μL. RESULTS：The linear range of 8 constituents were 0.013-0.052，0.005-0.018， 0.008-0.031，0.010-0.042，0.009-0.038，0.008-0.030，0.009-0.037，0.032-0.130 μg，respectively（all r were not less than 0.999 0）. The limits of detection were 0.08，0.14，0.11，0.21，0.42，0.35，0.23，0.28 μg/mL，respectively. The limits of quantification were 0.25，0.47，0.38，0.69，1.40，1.17，0.77，0.93 μg/mL，respectively. RSDs of precision ，reproducibility and stability tests （24 h） were all lower than 3％（n＝6 or n＝7）. The average re coveries were 99.67％-104.20％（RSDs＝0.17％-1.59％，n＝6）. Average contents of above 8 constituents in 13 batches of samples were 0.893 8，0.312 6，0.490 8，0.964 9，0.751 2，0.502 2，0.606 2， 1.915 7 mg/g（n＝3）. CONCLUSIONS ： The method is simple， acourate and reproducible ， and can be used for simultaneous determination of 8 flavonoid glycosides in 才〔2016〕5677） S. bulbiferum .