Objective:To study the difference of chemical composition between ancient and modern clinical pre-scriptions of Baihe Dihuang decoction by multi-component analysis.Methods:The polysaccharide extract of Baihe Dihuang decoction was determined by anthrone-sulfuric acid-ultraviolet spectrophotometer under 580 nm ultraviolet light.Six monosaccharides and oligosaccharides in the ancient and modern Baihe Dihuang decoction were determined by UPLC-CAD.An Agilent InfinityLab Poroshell 120 HILIC-Z(3.0 x 100 mm,2.7 μm)col-umn was used.The mobile phase was consisted of A 0.2%ammonia in acetonitrile and 0.2%ammonia in water with gradient elution.The flow rate was 0.8 mL·min-,the column temperature 35 ℃ and the CAD detector nebulizer temperature was 70 ℃.Data acquisition frequency was 10 Hz and the filter was 1.05 s.The injection volumn was 2 μL.The non-polar components were qualitatively and quantitatively analyzed by high performance liquid-quadrupole tandem time-of-flight mass spectrometry(UPLC-Q TOF MS/MS)and high performance liquid-phase tandem triple quadrupole mass spectrometry(UPLC-QQQ MS),respectively.The differential components of ancient and modern Baihe Dihuang Decoction were analyzed and 9 components were determined.Results:The linear relationship of 6 mono-oligosaccharides/polysaccharides and 9 differential components was good(r>0.999).The average recoveries ranged from 97.7%to 104.9%with RSDs≤3.1%.Precision,repeat-ability and stability met the requirements.The results showed that the conents of all the analytes in ancient and modern Baihe Dihuang decoction were significantly different(P<0.05).Conclusion:The methods used in this experiment are accurate,sensitive,stable and reproducible,which can provide reference for the quality control and pharmacodynamic material basic research of Baihe Dihuang Decoction.
关键词
百合地黄汤/多糖/单寡糖/超高液相色谱法/差异性成分/古今差异
Key words
Baihe Dihuang decoction/ancient and modern differences/polysaccharides/monosaccharides/UPLC/different components