方案摘要
方案下载| 应用领域 | 制药/生物制药 |
| 检测样本 | 中药材和饮片 |
| 检测项目 | 含量测定>质谱法 |
| 参考标准 |
Direct analysis in real time (DART) ion source is a powerful ionising technique for the quick and easy detection of various organic molecules without any sample preparation steps, but the lack of quantitation capacity limits its extensive use in the field of phytochemical analysis. Objective – To improvise a new system which utilize DART-MS as a hyphenated detector for quantitation. Methodology – A total extract of Schisandra chinensis fruit was analyzed on a TLC plate and three major lignan compounds were quantitated by three different methods of UV densitometry, TLC-DART-MS and HPLC-UV to compare the efficiency of each method. To introduce the TLC plate into the DART ion source at a constant velocity, a syringe pump was employed. The DART-MS total ion current chromatogram was recorded for the entire TLC plate. The concentration of each lignan compound was calculated from the calibration curve established with standard compound. Results – Gomisin A, gomisin N and schisandrin were well separated on a silica-coated TLC plate and the specific ion current chromatograms were successfully acquired from the TLC-DART-MS system. The TLC-DART-MS system for the quantitation of natural products showed better linearity and specificity than TLC densitometry, and consumed less time and solvent than conventional HPLC method. Conclusion – A hyphenated system for the quantitation of phytochemicals from crude herbal drugs was successfully established. This system was shown to have a powerful analytical capacity for the prompt and efficient quantitation of natural products from crude drugs.
文献贡献者
用实时直接分析质谱技术分析打印和手写纸张
用实时飞行时间质谱直接分析清醒状态果蝇的表皮烃类化合物
实时飞行时间质谱直接分析快速测定血清代谢组指纹图谱的方法优化
相关产品
关注
拨打电话
留言咨询
