Determination of three flavonoid glycosides in Thesium chinensis Turcz by HPLC method
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摘要: 目的 建立HPLC法同时测定百蕊草中3个黄酮苷类化合物的含量。 方法 色谱柱为DIKMA C18柱（250 mm×4.6 mm，5 μm），流动相为乙腈-水（21∶79，V/V），用冰醋酸调节pH至4.61，流速：1.0 ml/min，柱温：25℃，检测波长：346 nm。结果3个黄酮苷化合物山奈酚-3-O-L-吡喃鼠李糖基（1→2）-β-D-吡喃葡萄糖苷（百蕊草素Ⅰ）、山奈酚-3-O-β-D-吡喃葡萄糖苷（紫云英苷）、山奈酚-3-O-L-吡喃鼠李糖基（1→2）-[6-O-乙酰基]-β-D-吡喃葡萄糖苷（6'-乙酰氧基百蕊草素Ⅰ）的进样浓度分别在125~200、2.5~40、5.0~80 μg/ml范围内线性关系良好（r=0.999 9），平均加样回收率分别为101.63%、99.82%和102.02%，RSD分别为1.72%、2.34%和1.94%（n=6）。 结论 该方法准确，稳定性、重现性好，可作为百蕊草药材及制剂的质控方法。Abstract: Objective To establish an assay method for three flavonoid glycosides:kaempferol-3-O-L-rhamnopyranosyl(1→2)-β-D-glucopyranoside,kaempferol-3-O-glucoside and kaemperol-3-O-α-L-rhamnopyranosyl(1→2)-[6-O-acetyl]-β-D-glucopyranoside in Thesium chinensis Turcz by HPLC. Methods Dikma C18 column (520 mm×4.6 mm,5 μm) was used with the mobile phase of acetonitrile-water (21:79,adjusted pH to 4.61 with acetic acid) at a flow rate of 1.0 ml/min.The detection wavelength was set at 346 nm,and the column temperature was 25℃. Results The linear range of those three flavonoid glycosides was 125-200 μg/ml,2.5-40 μg/ml and 5.0-80 μg/ml (r=0.999 9).The average recoveries (n=6) were 101.63%,99.82% and 102.02%.RSD was 1.72%,2.34% and 1.94%(n=6) respectively. Conclusion This method is simple and accurate.It can be used for the quality control of Thesium chinensis Turcz and related preparations.
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Key words:
- Thesium chinensis Turcz /
- flavonoid glycosides /
- HPLC /
- content determination
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