【摘要】 目的:建立RP-HPLC测定紫锥菊提取物中2种咖啡酸衍生物含量的方法,同时测定5种样品。方法:采用RP-HPLC同时测定紫锥菊提取物中2种主要咖啡酸衍生物:单咖啡酰酒石酸、菊苣酸的含量。色谱条件为Agilent ZORBAXStab leBond C18柱(5μm,4.6 mm×250 mm);流动相:A(乙腈)—B(0.1%磷酸溶液)梯度洗脱,流速:1.2 mL/m in;检测波长:330 nm。结果:2种主要咖啡酸衍生物在色谱条件下有良好的分离度,浓度与峰面积之间线性关系良好,线性范围:单咖啡酰酒石酸在0.064~0.416μg,菊苣酸0.1~0.7μg。平均回收率:单咖啡酰酒石酸为99.37%,RSD为1.50%;菊苣酸为100.44%,RSD为1.71%。结论:方法简便、精确、专属性强,可作为提取物和研发新药的质量控制。更多还原

【Abstract】 AIM: To estahlish a RP-HPLC method of determining two caffeic acid derivatives in Echinacea extract and to determine 5 Echinacea purpurea root extracts. METHODS: RP-HPLC was applied to determine 2 caffeic acid derivatives in E.purpurea extract:caftaric acid and chicoric acid.HPLC conditions were as follows: Agilent ZORBAX StableBond C₁₈ column（5 μm,4.6 mm×250 mm） was used,with A（acetonitrile） —B（0.1% H₃PO₄） gradient elution as a mobile phase.The flow rate was 1.2 mL/min.The detection wavelenth was set at 330 nm. RESULTS: 2 caffeic acid derivatives were separated well.The linear range for caftaric acid and chicoric acid were 0.064-0.416 μg and 0.1-0.7 μg,respectively.Its average recoveries were 99.37% with RSD of（1.50%） and 100.44% with RSD of 1.71%,respectively. CONCLUSION: The method is simple,accurate,strong specificity and can be used to control the quality of E.purpurea extract and new medicine development.更多还原