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机构地区:[1]大连市皮肤病医院药剂科,大连116021 [2]大连理工大学分析化学教研室,大连116012 [3]大连医科大学药学院,大连116027
出 处:《中国新药杂志》2007年第22期1879-1881,共3页Chinese Journal of New Drugs
基 金:大连市科技计划项目(2002B4NS044)
摘 要:目的:建立复方茶多酚搽剂质量控制方法。方法:采用薄层色谱法,以硅胶G为固定相,氯仿-醋酸乙酯-乙醚-甲酸(9:7:3:3)为展开剂,对茶多酚搽剂中2种主要活性成分表没食子儿茶素没食子酸酯(EGCG)和表儿茶素没食子酸酯(ECG)进行定性鉴别;采用反相高效液相色谱法,以Kromasil—C18为色谱柱,乙腈-0.1%构橼酸溶液(15:85)为流动相,测定茶多酚搽剂中EGCG和ECG的含量。结果:薄层色谱斑点清晰,Rf值分别为0.38(EGCG)和0.52(ECG)。高效液相色谱定量方法达到基线分离,EGCG和ECG的保留时间分别为10.192和22.149min。线性范围分别为18.75—300μg·mL^-1(r=0.9997),3.125~50μg·mL^-1(r=0.9998),平均回收率分别为98.8%和98.0%。精密度RSD分别为2.7%和2.4%。结论:首次建立了茶多酚搽剂中EGCG和ECG的定性定量方法。该法准确、专属性及重现性好且快速简便,可作为该制剂质量控制方法。Objective: To develop a quality standard for compound tea polyphenols (TP) liniment. Methods:TLC was used to qualitatively identify the two main ingredients of EGCG and ECG in TP liniment using silica gel as a stationary phase, CHCL3-EtoAC-ether-HCOOH (9: 7: 3:3) as a developing agent. HPLC was used to quantitatively determine EGCG and ECG content using CH3CN-0.1% citric acid (15: 85) as a mobile phase, Kromasil-C18 as a chromatographic column. Results:TLC showed two clear spots with Rf of 0.38 and 0.52 corresponding to EGCG and ECG, respectively. HPLC resulted in a base-line separation of EGCG, ECG and other components,with no interference from blank sample. Good linearity over the range of 18.75 - 300μg·mL^ - 1 ( r = 0. 999 7 ) for EGCG and 3. 125 - 50μg· mL^ - 1 ( r = 0. 999 8) for ECG were achieved with average recovery being 〉 95% , precision (RSD) 〈 3% for both ingredients. Conclusion :The method developed in the present study is highly specific, precise, accurate. It is suitable for the quality control of the liniment.
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