目的:建立高效液相色谱法同时测定金胆片中4种主要活性成分含量的方法。方法:采用Agilent Eclipse X DB C_(18)(4.6 mm×250 mm,5μm)色谱柱;以乙腈(A)-0.1%磷酸溶液(B)为流动相梯度洗脱,检测波长为270 nm;柱温为30℃;流速1.0 mL•mi...目的:建立高效液相色谱法同时测定金胆片中4种主要活性成分含量的方法。方法:采用Agilent Eclipse X DB C_(18)(4.6 mm×250 mm,5μm)色谱柱;以乙腈(A)-0.1%磷酸溶液(B)为流动相梯度洗脱,检测波长为270 nm;柱温为30℃;流速1.0 mL•min^(-1)。结果:龙胆苦苷、虎杖苷、槲皮素和大黄素质量浓度分别在7.875~78.75μg•mL^(-1)(r=0.9999)、6.75~67.50μg•mL^(-1)(r=0.9997)、7.726~77.26μg•mL^(-1)(r=0.9994)、3.809~38.09μg•mL^(-1)(r=0.9998)范围内与峰面积呈良好的线性关系,平均加样回收率分别为99.31%、99.21%、99.04%、99.59%(n=6),RSD分别为1.86%、1.24%、1.37%、1.15%。结论:该实验方法准确性可靠、重复性和稳定性良好,专属性强,可为金胆片的质量控制和标准提升提供参考依据。展开更多
[Objectives] To investigate the anti-tumor activity of Sedum bulbiferum Makino in vitro,and establish a HPLC method for determination of quercetin and kaempferol in S. bulbiferum. [Methods] The inhibitory activities o...[Objectives] To investigate the anti-tumor activity of Sedum bulbiferum Makino in vitro,and establish a HPLC method for determination of quercetin and kaempferol in S. bulbiferum. [Methods] The inhibitory activities of different extracts and total flavonoids of S. bulbiferum on proliferation of three kinds of cancer cells( Hep G2,EC109,SW480) were tested by MTT assay. HPLC method for determination of quercetin and kaempferol in S. bulbiferum was established. [Results]The growth and proliferation of the three kinds of cancer cells were all significantly inhibited by ethyl acetate fraction and total flavonoids isolated from S. bulbiferum. With each extraction concentration increasing,stronger anti-tumor activity was found. The linear ranges of quercetin and kaempferol were 0. 03-0. 36 μg( R = 0. 999 9) and0. 08-0. 96 μg( R = 0. 999 9),and the average recoveries were 98. 90%( RSD = 1. 15%) and 98. 27%( RSD = 1. 70%),respectively.[Conclusions]S. bulbiferum has significant anti-tumor activity in vitro. The HPLC method established was accurate,reproducible,and could be used for quality control of this crude drug.展开更多
文摘目的:建立高效液相色谱法同时测定金胆片中4种主要活性成分含量的方法。方法:采用Agilent Eclipse X DB C_(18)(4.6 mm×250 mm,5μm)色谱柱;以乙腈(A)-0.1%磷酸溶液(B)为流动相梯度洗脱,检测波长为270 nm;柱温为30℃;流速1.0 mL•min^(-1)。结果:龙胆苦苷、虎杖苷、槲皮素和大黄素质量浓度分别在7.875~78.75μg•mL^(-1)(r=0.9999)、6.75~67.50μg•mL^(-1)(r=0.9997)、7.726~77.26μg•mL^(-1)(r=0.9994)、3.809~38.09μg•mL^(-1)(r=0.9998)范围内与峰面积呈良好的线性关系,平均加样回收率分别为99.31%、99.21%、99.04%、99.59%(n=6),RSD分别为1.86%、1.24%、1.37%、1.15%。结论:该实验方法准确性可靠、重复性和稳定性良好,专属性强,可为金胆片的质量控制和标准提升提供参考依据。
文摘[Objectives] To investigate the anti-tumor activity of Sedum bulbiferum Makino in vitro,and establish a HPLC method for determination of quercetin and kaempferol in S. bulbiferum. [Methods] The inhibitory activities of different extracts and total flavonoids of S. bulbiferum on proliferation of three kinds of cancer cells( Hep G2,EC109,SW480) were tested by MTT assay. HPLC method for determination of quercetin and kaempferol in S. bulbiferum was established. [Results]The growth and proliferation of the three kinds of cancer cells were all significantly inhibited by ethyl acetate fraction and total flavonoids isolated from S. bulbiferum. With each extraction concentration increasing,stronger anti-tumor activity was found. The linear ranges of quercetin and kaempferol were 0. 03-0. 36 μg( R = 0. 999 9) and0. 08-0. 96 μg( R = 0. 999 9),and the average recoveries were 98. 90%( RSD = 1. 15%) and 98. 27%( RSD = 1. 70%),respectively.[Conclusions]S. bulbiferum has significant anti-tumor activity in vitro. The HPLC method established was accurate,reproducible,and could be used for quality control of this crude drug.