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作 者:谭亚南[1] 佟苗苗[1] 张宇瑶[1] 徐洋洋[1] 翟延君[1]
出 处:《中国中药杂志》2013年第17期2779-2781,共3页China Journal of Chinese Materia Medica
基 金:国家自然科学基金项目(30873437);国家教育部博士点基金项目(20112133110001)
摘 要:目的:探讨水红花子中指标性成分花旗松素的含量与贮存时间的相关性。方法:采用HPLC,色谱柱Diamonsil C18(4.6mm×200mm,5μm),流动相为乙腈-0.1%磷酸水(梯度洗脱),检测波长为290nm,流速为1.0mL·min^-1,柱温为30℃。结果:花旗松素的进样量在0.07~0.35μg线性良好,回收率99.7%,RSD0.2%。药材贮存10年花旗松素的平均质量分数为0.84mg·g^-1,7年为1.36mg·g^-1,6年为1.75mg·g^-1,5年为1.99mg·g^-1,1年为2.16mg·g^-1。结论:水红花子中花旗松素的含量随着贮存时间的延长而降低,当贮存期超过6年时,其含量低于2010年版《中国药典》的要求。该实验方法精密度,重复性,准确性良好,可为水红花子的临床用药及质量评价提供科学参考。Objective: To find out the correlation between the content of taxifolin in Polygonum orientale and the storage time. Method: HPLC was used to determine taxifolin. The chromatographic condition was as following: Diamonsil C18 column (4.6 mm × 200 mm, 5 μm), mobile phase acetonitrile -0.1% phosphoric acid (gradient elution), the detection wavelength 290 nm and flow rate 1.0 mL · min^-1, the column temperature 30 ℃. Result: The injection volume of taxifolin was in good linearity within 0.07 and 0.35 μg, the average recovery was 99.7% with RSD 0.2%. Taxifolin content was 0.84, 1.36, 1.75, 1.99 mg· g^-1 corresponding to stor-age time of 10, 7, 6, 5 years, respectively. Conclusion: The content of taxifolin decreased with the storage time. When the storage period is more than six years, the content is lower than that required by Chinese Pharmacopoeia (2010 version). This method has a good repeatability and accuracy, it provides a scientific reference for clinical use and quality evaluation of P. orientale.
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