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Objective: To qualitatively and quantitatively analyze the terpene-conjugated curcuminoid compound- Bisabolocurcumin ether (BCE) in Curcuma species. Methods: UPLC-Q-TOF-MS/MS was used to establish a qualitative analysis of BCE, and its distribution in Curcuma species was studied. UPLC was used to establish quantitative analysis of BCE and three main curcuminoids in three Curcuma species (Rhizoma Curcumae Longae, HuangsiYujin, Curcuma phaeocaulis), in order to study the difference of BCE content in different Curcuma species and its content difference with other curcuminoids. Results: In the qualitative analysis, by analyzing the primary, secondary pyrolysis fragments and the cracking law of BCE, it was found that only Jianghuang and HuangsiYujin contained it, but BCE could not be detected in the PengEzhu. In the quantitative analysis, BCE and the three main curcuminoids had good linear relationship in their linear range (r ≥ 0.999 3); The average recovery rates were in range of 99.407%-113.631%, and RSD < 4%. It was found that the content of three curcuminoids in Jianghuang were significantly higher than the other two herbs, and the content of BCE in the three herbs was very different. The BCE content in Jianghuang was four times than that of HuangsiYujin. Conclusion: The qualitative and quantitative analysis methods established in this study can provide reference for the discovery and analysis of more novel BCE structure’s compounds, and provide a basis for improving the quality standards of Curcuma species.
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OBJECTIVE: To prepare Flu mixture and establish its quality standard. METHODS: The methods of decoction- boiling and distillation were adopted to prepare the flu mixture; TLC was used to identify Radix Et Rhizoma Rhei and Rhizoma Curcumae Longae, and HPLC was used to determine the content of Artemisinin. RESULTS: The spots characteristic of Radix Et Rhizoma Rhei and Rhizoma Curcumae Longae. were clearly identified with TCL. A good linearity was seen of Artemisinin in the range of 0. 42～ 2. 10? g( r=0. 999 3) . The recovery rate was 99. 84% ( RSD=2. 15% ) . CONCLUSIONS: The preparation is simple in preparation technique and good in stability. The TLC method is highly exclusive. The HPLC method is simple, accurate, and can be used for the quality control of flu mixture.
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Objective To determine the content of six heavy metal elements of arsenicum(As),mercury(Hg),cuprum(Cu),plumbum(Pb),cadmium(Cd) and chromium(Cr) in Rhizoma Curcumae Longae.Methods Samples were digested with microwave digestion system,and the contents of Cu,Pb,Cd and Cr were determined by graphite furnace atomic absorption spectrometry(GFAAS);the contents of As and Hg were determined by atomic fluorescence spectrometry(AFS),and the reproducibility and recovery of the method were also examined.Results As and Hg contents in most of the products were below the limit.Only Cu,Pb and Cd contents exceed the limit.The recovery was 86.3 %～113.4 %and RSD was 10.4 %.Conclusions The method is simple and accurate,and can be used for the determination of heavy metal in Chinese herbs.
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AIM:To study characteristic components and fingerprint of the essential oils of processed Rhizoma curcumae longae,and further use as one of evaluation of quality control. METHODS:The essential oils were ex-tracted by steam distillation from ten batches of samples,and the characteristic components of the essential oils were analysed by GC-MS. And then mutual fingerprint of the characteristic components was established by Microsoft Office Excel 2003. RESULTS:Twenty-seven characteristic components of essential oil consisted of Ar-turmerone,Tumerone,Curlone,?-Curcumene,?-Zingiberene,?-Sesquiphellandrene and their derivatives,which were compose of about 88. 8% ～94. 9% of the total essential oil. The retention time and peak area of the components appeared the characteristic fingerprint. CONCLUSION:The method and the fingerprint have a good reproducibility,and can be used to identify and evaluate the quality of processed Rhizome curcumae longae.