西洋参破壁饮片、粗粉与传统饮片中人参皂苷的体外溶出度比较

Dissolution difference of ginsenosides from ultrafine granular powder and common powder traditional pieces of Panacis Quinquefolii Radix in vitro

比较西洋参破壁饮片、粗粉与传统饮片中人参皂苷在水中和模拟胃液中溶出度,研究粉体粒径对西洋参溶出度的影响。采用高效液相色谱法测定西洋参破壁饮片、粗粉和传统饮片中5种人参皂苷成分在不同时间点的溶出量,绘制溶出曲线,比较不同形态西洋参皂苷成分的溶出特征。结果表明,在以水为溶出介质的实验中,西洋参破壁饮片中人参皂苷较粗粉、传统饮片具有更快的溶出速度,5 min时溶出度就达到了总质量分数的90%,溶出量比饮片高出14%,比粗粉高出8%;在以模拟胃液为溶出介质的实验中,西洋参破壁饮片中人参皂苷比提取物中人参皂苷溶出速度上稍慢,但最大溶出量比传统饮片提取物高出5%,比粗粉高出14%。该文首次通过体外溶出度研究证明,西洋参破壁饮片化后能够改善其有效成分的溶出效率。

The dissolution of Panacis Quinquefolii Radix uhrafine granular powder and common powder, traditional pieces in water and simulated gastric juice in vitro was compared, and the effect of particles size of Panacis Quinquefolii Radix on the dissolution was studied. HPLC method was used for determination of five ginsenosides including Rg1, Re, Rb1 , Rc and Rd from ultrafine granular powder and common powder,traditional pieces of Panacis Quinquefolii Radix at different points in time, furthermore, the dissolution curves of Panacis Quinquefolii Radix ultrafine granular powder and common powder, traditional pieces were obtained. The dissolution characteristics of the three Panacis Quinquefolii Radix forms were also compared in this study. According to the results, the dissolution rates of ginsenosides from ultrafine granular powder exceeded 90% of the total content with 5 rain, significantly higher than that of the other two forms in water in vitro. At the same time, the dissolved amount of the ultrafine granular powder was fourteen percent higher than that of the traditional pieces and eight percent higher than that of the common powder. Under the condition of simulated gastric juice in vitro, the dissolution rates of ginsenosides from ultrafine granular powder were little lower than that of the other two, but the maximum dis- solved amount of the former was fourteen percent higher than that of the common powder and five percent higher than that of the extracts. Therefore the conclusion is that micronization of Panacis Quinquefolii Radix contributed to dissolution of effective components.