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胶束电动毛细管色谱法测定穿心莲中穿心莲内酯和脱水穿心莲内酯 被引量:18

Determination of Andrographolide and Dehydroandrographolide in Andrographis Paniculata Ness by Micellar Electrokinetic Capillary Chromatography
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摘要 采用胶束电动毛细管色谱法分离测定了中药穿心莲中穿心莲内酯和脱水穿心莲内酯。电泳条件 :以2 0mmol L磷酸缓冲溶液 1 0mmol LSDS(含 5 %甲醇 ,V/V ,pH 6.8)为电泳介质 ,未涂层石英毛细管 (75 μmi.d.× 5 0cm ,有效分离长度 4 2 .2cm)为分离通道 ,压力进样 (2 5 0kPa·s) ,2 0kV恒压电泳 (2 5℃ )分离 ,检测波长 2 4 0nm。在 1 0 .4~93 .5mg/L ,和 1 0 3~ 92 .7mg L范围内 ,对两种内酯分别进行了定量分析。加样回收率穿心莲内酯为 1 0 2 % ,脱水穿心莲内酯为 1 0 2 %。 Andrographic paniculata nees is one of well-known traditional chinese medicinal materials (TCMs), in which andrographolide and dehydroandrographolide are two major active compounds. In this work, a micellar electrokinetic capillary chromatographic (MECC) method has been developed for separation and quantitative analysis of these two compounds in andrographis paniculata ness. Electroretic conditions are as follows: uncoated fused silica capillary (42.2 cm/50 cm (effective/total length), 75 mum i.d.), 20 mmol/L phosphate-10 mmol/L sodium dodecyl sulfate containing 5% methanol (V/V) at pH 6.8, applied voltage 20 W, temperature 25 degreesC, detection wavelength 240 nm, injection 25kPa.s. Both of the analytes were separated successfully within 10 minutes under the optimum conditions. The relative peak areas of the two analytes increase linearly with the increase of their concentrations in the range of 10.4 similar to 93.5 mg/L for andrographolide and 10.3 similar to 92.7 mg/L for dehydroandrographolide, and the revoveries are 102% and 102% respectively.
出处 《分析化学》 SCIE EI CAS CSCD 北大核心 2003年第4期451-454,共4页 Chinese Journal of Analytical Chemistry
基金 国家自然科学基金重点项目 (No .2 0 2 35 0 2 0 ) 福建省科技厅中药质量控制重点项目 (No .2 0 0 0F0 0 1)资助课题
关键词 胶束电动毛细管色谱法 测定 穿心莲 穿心莲内酯 脱水穿心莲内酯 复方制剂 质量控制 micellar electrokinetic capillary chromatography andrographis paniculata ness andrographolide degydroandrographolide
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  • 1张艺,孟宪丽,赖先荣,张希,徐敏.RP-HPLC测定穿心莲片中穿心莲内酯含量[J].中草药,1995,26(4):191-192. 被引量:24
  • 2王桂英.穿心莲中总内酯含量的测定[J].中成药研究,1983,10:31-31.
  • 3陈德昌 邵爱新 等.薄层光密度法测定脱氧穿心莲内酯[J].药物分析杂志,1986,6(4):232-232.

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