OBJECTIVE: To establish the method for simultaneous determination of 5 saponins in Lonicerae Flos. METHODS: Using macranthoidin B as a reference, HPLC method was adopted to calculate the relative correction factor (RCF) of it to macranthoidin A, dipsacoside B, macranthoside A and macranthoside B. The contents of above 4 saponins were calculated through RCF. Using the contents of saponins determined by external standard method as measured value, the calculated value was compared with measured value. RESULTS: The linear ranges of macranthoidin A, macranthoidin B, dipsacoside B, macranthoside A and macranthoside B were 0.316-6.32 μg(r=0.997 3), 0.453-9.06 μg(r=0.998 2),0.231-4.62 μg(r=0.999 6), 0.342-6.84 μg(r=0.998 4)and 0.147-2.94 μg(r=0.996 1), respectively. RSDs of precision, stability and reproducibility tests were all lower than 2.0%. The recoveries were 97.74%-104.51%(RSD=2.37%,n=6)、96.70%-103.20%(RSD=2.37%,n=6)、96.12%-103.61%(RSD=2.45%,n=6)、98.80%-104.70%(RSD=2.32%,n=6)、99.21%-102.92%(RSD=1.39%,n=6), respectively. There was no statistical significance between calculated value and measured value (P>0.05). CONCLUSIONS: The method is simple, precise, stable and reproducible. It can be used for the determination of saponins in Lonicerae Flos.
关键词
一测多评法山银花外标法相对校正因子灰毡毛忍冬皂苷乙
Keywords
QAMSLonicerae FlosExternal standard methodRelative correction factorMacranthoidin B