RESUMO
Objective: To identify two different growth types vertical growth (V-class) and lateral growth (L-class)) of Justicia procumbens, and compare the contents of chemical compounds between upper part and different organs. Method: DNA was extracted from the leaves of two growth forms of J. procumbens. Internal transcriptional spacer 2 (ITS2) and psbA-trnH sequences were obtained by polymerase chain reaction (PCR) amplification and bidirectional sequencing. High performance liquid chromatography (HPLC) was used to determine the contents of justicidin B (JB) and chinensinaphthol methyl ether (CME) from the above-ground parts of V-class and L-class J. procumbens and their inflorescence,leaves,and stems. Independent sample T-test and Paired-sample T-test were used to compare the contents of JB and CME from two different growth forms of J. procumbens and their different organs. Result: The DNA sequences after shearing were shown to be identical between the V-class and L-class samples. Independent sample T-test showed no difference on the content of JB between the above-ground parts of V-class and L-class samples,but the content of CME was higher in V-class J. procumbens than L-class (PT-test showed that the content of JB and CME were different in the inflorescence,leaves,and stems of J. procumbens (PJ. procumbens was higher than that in L-class. Conclusion: DNA barcoding and comparison of JB and CME content indicated that the two different growth forms of J. procumbens belong to the same species. The contents of CME were different in J. procumbens between different growth forms,and was higher in V-class. Meanwhile,due to the little content of JB and CME in stems,the best picking time of J. procumbens is the flowering and fruiting period with more inflorescence and leaves.
RESUMO
OBJECTIVE:To establish HPLC fingerprint of Miao medicine Fufukang spray. METHODS:The determination was performed on Thermo Hypersil GOLD C18 column with mobile phase consisted of acetonitrile-0.2％ glacial acetic acid (gradient elution) at the flow rate of 0.6 mL/min. The detection wavelength was set at 262 nm,and column temperature was 25 ℃. The sample size was 10 μL. Using 6′-hydroxyl-justicidin B as reference control,HPLC chromatograms of 10 batches of samples were drawn. Similarity evaluation system software(2004 A edition)of TCM fingerprint was used to evaluate the similarity and determine common peaks of 10 batches of samples. The established method was used to determine the contents of 6′-hydroxyl-justicidin B and justicidin B in 10 batches of samples. RESULTS:There were 12 common peaks in HPLC fingerprints of 10 batches of samples with similarity>0.90. HPLC fingerprint showed a good consistency with the control fingerprint. The contents of 6′-hydroxyl-justicidin B and justicidin B in 10 batches of samples were 1.64-5.84,0.83-2.78 mg/100 mL,respectively. CONCLUSIONS:The established method is simple,accurate,reliable and suitable for quality evaluation of Fufukang spray.