HPLC法同时测定五味沙棘颗粒中甘草苷和甘草酸的含量
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篇名: | HPLC法同时测定五味沙棘颗粒中甘草苷和甘草酸的含量 |
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摘要: | 目的:建立同时测定五味沙棘颗粒中甘草苷和甘草酸含量的方法。方法:采用高效液相色谱法。色谱柱为Thermo scientific ODS-2 Hypersil,流动相为乙腈-0.5%磷酸溶液(梯度洗脱),流速为1.0 mL/min,检测波长为237 nm,柱温为25 ℃,进样量为20 μL。结果:甘草苷和甘草酸检测进样量线性范围分别为48~480 μg(r=0.999 9)、90~900 μg(r=0.999 9);定量限分别为0.55、2.10 μg/mL,检测限分别为0.16、0.62 μg/mL;精密度、稳定性、重复性试验的RSD<2.0%;加样回收率分别为95.08%~97.58%(RSD=0.93%,n=6)、95.86%~99.89%(RSD=1.67%,n=6)。结论:该方法简单准确、重复性好,适用于五味沙棘颗粒中甘草苷和甘草酸含量的同时测定。 |
ABSTRACT: | OBJECTIVE: To establish a method for simultaneous determination of liquiritin and glycyrrhizic acid in Wuwei shaji granules. METHODS: HPLC method was adopted. The determination was performed on Thermo scientific ODS-2 Hypersil column with mobile phase consisted of acetonitrile-0.5% phosphoric acid (gradient elution) with flow rate of 1.0 mL/min. The detection wavelength was set at 237 nm, and column temperature was 25 ℃. The sample size was 20 μL. RESULTS: The linear ranges of liquiritin and glycyrrhizic acid were 48-480 μg(r=0.999 9) and 90-900 μg(r=0.999 9), respectively. The limits of quantitation were 0.55, 2.10 μg/mL, and the limits of detection were 0.16, 0.62 μg/mL. RSDs of precision, stability and reproducibility tests were all lower than 2.0%. The recoveries were 95.08%-97.58%(RSD=0.93%,n=6)and 95.86%-99.89%(RSD=1.67%,n=6), respectively. CONCLUSIONS: The method is simple, accurate and reproducible, and can be used for the content determination of liquiritin and glycyrrhizic acid in Wuwei shaji granules. |
期刊: | 2017年第28卷第27期 |
作者: | 耿婕,那顺朝克图,丛丽华,樊精辉,赵春雨,薛培凤 |
AUTHORS: | GENG Jie,Nashunchaoketu,CONG Lihua,FAN Jinghui,ZHAO Chunyu,XUE Peifeng |
关键字: | 高效液相色谱法;五味沙棘颗粒;甘草苷;甘草酸;含量测定 |
KEYWORDS: | HPLC; Wuwei shaji granules; Liquiritin; Glycyrrhizic acid; Content determination |
阅读数: | 337 次 |
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