1.Quantitative Determination of Two Flavonoids and Four Phenoquinones of Huoxue Cuyu Capsules by HPLC
Dan CHEN ; Ke LI ; Maofang LU ; Xi HOU ; Ruocun LI
China Pharmacy 2019;30(14):1931-1935
OBJECTIVE:To establish a method for simultaneous determination of two flavonoids (rutin and kaempferol-3-O- rutinoside) and four phenoquinones (dihydrotanshinone Ⅰ,cryptotanshinone,tanshinone Ⅰ and tanshinoneⅡA) in Huoxue cuyu capsules. METHODS:HPLC method was adopted. The determination was performed on Welch Ultimate XB-C18 column with mobile phase consisted of acetonitrile-0.1%phosphoric acid solution(gradient elution)at the flow rate of 1.0 mL/min. The column temperature was set at 20 ℃,and detection wavelength was set at 270 nm. The sample size was 10 μL. RESULTS:The linear range of rutin,kaempferol-3-O-rutinoside,dihydrotanshinone Ⅰ,cryptotanshinone,tanshinone Ⅰ and tanshinoneⅡA were 172.13-860.66 μg/mL(r=0.999 7),15.33-76.66 μg/mL(r=0.999 8),12.81-64.06 μg/mL(r=0.999 3),5.90-29.52 μg/mL(r=0.999 3),5.12-25.60 μg/mL(r=0.999 2),6.71-33.57 μg/mL(r=0.999 7),respectively. The limits of detection were 0.08,0.01,0.01,0.01,0.01,0.01 μg/mL. The limits of quantitation were 0.27,0.02,0.03,0.03,0.03,0.03 μg/mL,respectively. RSDs of precision,stability test and repetition tests were all lower than 2.0%(n=6). The recoveries were 97.54%-100.25%(RSD=1.07%,n=6),96.90%-101.91%(RSD=1.73%,n=6),96.24%-102.89%(RSD=2.32%,n=6),97.04%-102.18%(RSD=1.82%,n=6),95.06%-97.73%(RSD=1.18%,n=6),95.59%-101.40%(RSD=2.29%,n=6),respectively. CONCLUSIONS:The method is sensitive,rapid,simple and has good reproducibility. It can be used for simultaneous determination of rutin, kaempferol-3-O-rutinoside, dihydrotanshinone Ⅰ, cryptotanshinone, tanshinone Ⅰ, tanshinoneⅡA in Huoxue cuyu capsules.