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出 处:《天然产物研究与开发》2007年第2期303-305,共3页Natural Product Research and Development
摘 要:本文建立了一种可靠性高、重现性好的高效液相色谱(HPLC)测定山楂叶中熊果酸含量的方法,在测定中采用富集和固相萃取组合纯化工艺去除干扰物质。高效液相色谱测定条件为Hypersil(ODS)色谱柱,流动相为甲醇:0.2%磷酸二氢钠(90:10,V/V),检测波长210nm,流速0.8mL/min。熊果酸浓度在100—800wg/mL与峰面积存在良好线性关系(r^2=0.9992),该方法准确可靠,日内稳定性标准偏差在0.6%~1.5%,日间稳定性标准偏差在0.7%~2.6%。为不同产地山楂叶中熊果酸含量建立有效的分析方法。Quantitative HPLC analysis of ursolic acid in leaves of Hawthorn was established. The HPLC system used an Hypersil(ODS) column eluted with methanol:0.2% sodium dihydrogen phosphate aqueous = 90: 10, V/V) as solvents at a flow rate 0.8 mL/min and detected at 210 urn. Linear correlation (r^2 =0.9992) of the peak area and the concentration of ursolic acid over the concentration range 100 ~ 800 μg/mL was obtained. The method was precise with relative standard deviations for ursolic acid ranged between 0.6% ~ 1.5% (intraday) and 0.7% ~ 2.6% (interday). The content of ursolic acid in the leaves of Hawthorn growing at different areas was determined to establish the effectiveness of the method.
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