Development of an HPLC-DAD method for the determination of five alkaloids in Stephania yunnanensis Lo and in rat plasma after oral dose of Stephania yunnanensis Lo extracts

作者：Xin, Aiyi; Zhang, Yaming; Zhang, Yanxia; Di, Duolong; Liu, Junxi^*

来源：Biomedical Chromatography, 2018, 32(10): e4292.

DOI：10.1002/bmc.4292

• HPLC-DAD method
• isoquinoline alkaloids
• liquid-liquid extraction
• quantitative determination
• Stephania yunnanensis Lo

For the rational utilization and the quantitative quality control of the Stephania yunnanensis Lo, an HPLC-DAD method was developed for the quantitative and simultaneous determination of five alkaloids in rat plasma (stepharine, sinomenine, palmatine, isocorydine and tetrahydropalmatine), which were the main active chemical constituents of this plant and belong to four kinds of isoquinoline-type alkaloids (protoberberine, morphine, aporphine and protaporphine alkaloids). The contents of five alkaloids ranged from 0.09 to 2.32% (w/w). The method validation was tested for the linearity (r(2)>0.9975), precision (intra-day RSD<4.8% and inter-day RSD<4.9%), extraction recovery (85.49 +/- 2.29% to 99.21 +/- 1.48%) and stability (98.5 +/- 5.3% to 101.2 +/- 3.4%). We developed an HPLC-DAD method to simultaneously measure these alkaloids in rat plasma after oral administration of the extract of this plant to rats. The results supported the hypothesis that isoquinoline alkaloids were the compounds responsible for the main pharmacological activities for anti-inflammatory and analgesic.

• 出版日期2018-10
• 单位中国科学院大学; 中国科学院兰州化学物理研究所