ABSTRACT
OBJECTIVE:To establish HPLC fmgerprints of Stephania kwangsiensis.METHODS:HPLC method was adopted.The determination was performed on Hypersil ODS2 with mobile phase consisted of acetonitrile-0.5％ phosphoric acid (gradient elution) at the flow rate of 1.0 mL/min.The detection wavelength was set at 282 nm,and column temperature was 30 ℃.The sample size was 10 μL.Using tetrahydropalmatine as reference,HPLC fingerprints of 10 batches of medicinal materials were determined.Common peak identification and similarity evaluation were conducted by using Similarity Evaluation System of TCM Chromatographic Fingerprint (2012 edition).RESULTS:A total of 17 common peaks were identified in HPLC fingerprints of 10 batches of S.kwangsiensis.Among 10 batches of samples,fingerprint of samples from 8 producing areas were compared with control chromatogram.The similarity was higher than 0.900.The similaritg of samples from 2 producing areas were lower than 0.900.CONCLUSIONS:Established HPLC fingerprint can provide reference for the identification and quality evaluation of S.kwangsiensis;S.kwangsiensis in Guangxi from most producing areas include similar alkaloid components,but samples from other producing areas are different from them.
ABSTRACT
OBJECTIVE:To establish HPLC fmgerprints of Stephania kwangsiensis.METHODS:HPLC method was adopted.The determination was performed on Hypersil ODS2 with mobile phase consisted of acetonitrile-0.5％ phosphoric acid (gradient elution) at the flow rate of 1.0 mL/min.The detection wavelength was set at 282 nm,and column temperature was 30 ℃.The sample size was 10 μL.Using tetrahydropalmatine as reference,HPLC fingerprints of 10 batches of medicinal materials were determined.Common peak identification and similarity evaluation were conducted by using Similarity Evaluation System of TCM Chromatographic Fingerprint (2012 edition).RESULTS:A total of 17 common peaks were identified in HPLC fingerprints of 10 batches of S.kwangsiensis.Among 10 batches of samples,fingerprint of samples from 8 producing areas were compared with control chromatogram.The similarity was higher than 0.900.The similaritg of samples from 2 producing areas were lower than 0.900.CONCLUSIONS:Established HPLC fingerprint can provide reference for the identification and quality evaluation of S.kwangsiensis;S.kwangsiensis in Guangxi from most producing areas include similar alkaloid components,but samples from other producing areas are different from them.
ABSTRACT
Objective To establish a HPLC method for determination of naringenin and apigenin in Premna fulva. Methods The SHISEIDO￣SPOLAR C18(250 mm×4.6 mm,5μm) was used as analytical column.The mobile phase consisted of methanol￣0.2% phosphoric acid (42:58) with isocratic elution at a flow rate of 1.0 mL.min-1 .The detection wavelength of naringenin and apigenin was 288 nm and 340 nm, respectively.Column temperature was set at 35 ℃ , the injection Volume was 10 μL. Results Naringenin and apigenin had a good linear relationship in the concentration range of 0.180 ~ 3.60 μg (r =0.999 9) and 0. 0052 ~ 0. 1040 μg ( r = 0. 999 9), respectively. Conclusion The method is accurate and reliable. It is appropriate for the quantitative determination of naringenin and apigenin in Premna fulva and its preparations.