Aim To establish an RP-HPLC method for simultaneous determination of 2"-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract. Methods Chromatography was carfled out on Kromasil C18 column (250 mm...Aim To establish an RP-HPLC method for simultaneous determination of 2"-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract. Methods Chromatography was carfled out on Kromasil C18 column (250 mm × 4.6 mm, 5 μm), using THF-CH3CN-H2O-H3PO4 (30 : 5: 125 : 0. 1) as the mobile phase at a flow rate of 1.0 mL·min^-1. The UV detection wavelength was 270 nm. Results The linear range of 2"-O-rhamnosyl vitexin and vitexin were 0. 106 4 μg - 2. 1280 μg ( r =0. 999 1 ) and 0. 139 2μg - 2. 784 0 μg ( r =0. 999 3 ), respectively. The average recoveries of 2"-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf were 99.2% ( RSD = 2.80%, n = 6) and 100.6% ( RSD = 2.84%, n = 6), respectively. Conclusion This method is reproducible, simple, precise, and rapid for simultaneous determination of 2"-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract, thereby providinge the basis for quality specification of Chinese hawthorn leaf and its extract.展开更多
目的建立基于多种内参物的一测多评法测定金莲清热颗粒中芒果苷、荭草素-2″-O-β-L-半乳糖苷、荭草苷、藜芦酸、牡荆苷和哈巴俄苷6个成分的含量。方法以Agilent Eclipse Plus C_(18)为色谱柱,以乙腈-0.1%磷酸溶液为流动相(梯度洗脱),...目的建立基于多种内参物的一测多评法测定金莲清热颗粒中芒果苷、荭草素-2″-O-β-L-半乳糖苷、荭草苷、藜芦酸、牡荆苷和哈巴俄苷6个成分的含量。方法以Agilent Eclipse Plus C_(18)为色谱柱,以乙腈-0.1%磷酸溶液为流动相(梯度洗脱),流速为1mL/min,柱温为30℃,检测波长为270 nm。分别以荭草苷、牡荆苷、荭草素-2″-O-β-L-半乳糖苷为内参物,采用一测多评法建立另外5个待测成分与内参物的相对校正因子,然后计算21批金莲清热颗粒样品中6个成分的含量,并与外标法测定结果进行比较。结果一测多评法测得21批金莲清热颗粒样品中芒果苷、荭草素-2″-O-β-L-半乳糖苷、荭草苷、藜芦酸、牡荆苷和哈巴俄苷的含量范围分别为0.234~0.516、1.804~2.270、2.143~2.606、0.190~0.223、0.594~0.782、0.080~0.152 mg/g,外标法测定结果分别为0.235~0.523、1.798~2.265、2.137~2.599、0.190~0.224、0.597~0.786、0.077~0.151 mg/g,2种方法所测结果的差异百分比不大于4.00%。结论建立了基于多种内参物同时测定金莲清热颗粒中6种成分含量的一测多评法,该方法与外标法所得结果无明显差异,可用于金莲清热颗粒的质量控制。展开更多
文摘Aim To establish an RP-HPLC method for simultaneous determination of 2"-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract. Methods Chromatography was carfled out on Kromasil C18 column (250 mm × 4.6 mm, 5 μm), using THF-CH3CN-H2O-H3PO4 (30 : 5: 125 : 0. 1) as the mobile phase at a flow rate of 1.0 mL·min^-1. The UV detection wavelength was 270 nm. Results The linear range of 2"-O-rhamnosyl vitexin and vitexin were 0. 106 4 μg - 2. 1280 μg ( r =0. 999 1 ) and 0. 139 2μg - 2. 784 0 μg ( r =0. 999 3 ), respectively. The average recoveries of 2"-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf were 99.2% ( RSD = 2.80%, n = 6) and 100.6% ( RSD = 2.84%, n = 6), respectively. Conclusion This method is reproducible, simple, precise, and rapid for simultaneous determination of 2"-O-rhamnosyl vitexin and vitexin in Chinese hawthorn leaf and its extract, thereby providinge the basis for quality specification of Chinese hawthorn leaf and its extract.