Rapid identification of cortex dictamni pieces and its counterfeit alangium Chinense by spectral imaging method / 中国中药杂志

<p><b>OBJECTIVE</b>The spectral imaging method was used to quickly identify the Cortex Dictamni pieces and its counterfeit alangium Chinese, which is a potential method would be applied to control the quality of the Cortex Dictamni pieces.</p><p><b>METHOD</b>Standard sample, 5 cortex dictamni samples and its counterfeit alangium Chinese of different sources were tested by the liquid crystal imaging instrument. The spectrum resolution was 5 nm, the spectral range was from 405 nm to 680 nm, and the spatial resolution was 50 lp x mm(-1). The characteristic spectrum curves were picked up from spectral cube and principal analysis method was used to analyze the results.</p><p><b>RESULT</b>The identification results by the spectral imaging method accorded well with the results by the traditional biology and chemistry analysis method.</p><p><b>CONCLUSION</b>The spectral imaging analysis method can be used to identify the cortex dictamni pieces and its counterfeit alangium Chinense. The testing course is convenient, quick and noninvasive.</p>

Determination of ephedrine and pseudoephedrine in MAHUANG TANG~* by GC-MS and effect of compatible medicinal herbs on concentration of components in decoction / 中草药

Object To establish a quantitative method for ephedrine and pseudoephedrine in the aqueous decoctions of MAHUANG TANG (ADMHT) by GC MS, and to determine the content of the two components in decoctions of the different recipes consisted of Herba Ephedrae, and other herbs by using the quantitative method will be established, so as to study the effect of compatible medicinal herbs on the release of the two components in Herba Ephedrae to decoctions Methods The quantitative method by the help of characteristic ion was used in GC MS Results The content of ephedrine and pseudoephedrine in decoction prepared from Herba Ephedrae and Semen Armeniacae Amarum evidently decreases, the content of two components in decoction prepared from Herba Ephedrae and Ramulus Cinnamomin evidently increases, the content of two components in decoction prepared from Herba Ephedrae and Radix Glycyrrhizae has no obvious change, as compared with that of two components in decoction from Herba Ephedrae alone Conclusion The method is good in the aspect of separable effect, sensitivity and reproducibility The method not only can quantify the two components, but also provide the bases of quality control for the pharmacokinetic study and therapeutic detection of Herba Ephedra recipes