A high performance liquid chromatography (HPLC) method was established for simultaneous determina-tion of geniposidic acid, chlorogenic acid and geniposide in eucommia. Detection at 240 nm with a reversed-phasecolumn,...A high performance liquid chromatography (HPLC) method was established for simultaneous determina-tion of geniposidic acid, chlorogenic acid and geniposide in eucommia. Detection at 240 nm with a reversed-phasecolumn, CH3OH volume fraction, acidic additive and pH value of mobile phase were studied for their effects on theseparability of the compounds. The most suitable separation was obtained with isocratic gradient elution systemusing CH3OH-H2O-H3 PO4 (12.00: 87.96: 0.04, volume ratio) at a flow-rate of 1.0 mL/min. Under the experi-mental conditions, the capacity factors of three compounds are in 3-13. The sample is separated rightly. Theanalysis time is 30 min and the retention time of genfposidic acid, chlorogenic acid and geniposide are 6. 7 min,10.5 min and 21 min, respectively.展开更多
[Objectives] To establish a method for determining the content of chlorogenic acid in Wuli Huichun Wan. [Methods] The content of chlorogenic acid in Wuli Huichun Wan was determined by high performance liquid chromatog...[Objectives] To establish a method for determining the content of chlorogenic acid in Wuli Huichun Wan. [Methods] The content of chlorogenic acid in Wuli Huichun Wan was determined by high performance liquid chromatography( HPLC) combined with Agilent Eclipse Plus C18 column( 4. 6 mm × 250 mm,5 μm),in mobile phase of 0. 4% phosphoric acid solution-acetonitrile( 12∶ 88) at flow rate of1. 0 m L/min,and detection wavelength of 327 nm. [Results] The linearity of chlorogenic acid in the range of 4-48 μg injection was good( r = 1); the average recovery rate was 99. 61% and the RSD was 0. 98%. [Conclusions] The established method is simple and accurate and has high reproducibility,thus can be used as quality control method for Wuli Huichun Wan.展开更多
The present study was aimed at the comparison of the pharmacokinetics of pure chlorogenic acid and extract of Solanum lyratum Thunb. The animals were allocated to two groups, and were administered chlorogenic acid or ...The present study was aimed at the comparison of the pharmacokinetics of pure chlorogenic acid and extract of Solanum lyratum Thunb. The animals were allocated to two groups, and were administered chlorogenic acid or extract of S. lyratum Thunb. at a dose of 50.0 mg/kg orally. Blood samples were collected up to 8 h post-dosing. Plasma chlorogenic acid analyses were performed using an HPLC method with UV detector. The pharmacokinetic parameters were evaluated using non-compartmental assessment. Significant differences existed in the two groups for AUCo-t, AUCo-∞ and CLz/F. The reliable HPLC method was successfully applied to the determination of chlorogenic acid in rat plasma at dosting of 50.0 mg/kz.展开更多
[Objectives] This study was conducted to establish a method for determination of chlorogenic acid in Mussaenda pubescens Ait.f.[Methods]HPLC used SHISEIDO C_(18) MG Ⅱ column( 5 μm,4.6 mml.D.× 250 mm) as chromat...[Objectives] This study was conducted to establish a method for determination of chlorogenic acid in Mussaenda pubescens Ait.f.[Methods]HPLC used SHISEIDO C_(18) MG Ⅱ column( 5 μm,4.6 mml.D.× 250 mm) as chromatographic column and acetonitrile-0.4% phosphoric acid solution( 9∶91) as mobile phase.The separation was performed at a flow rate of 1.0 ml/min and a column temperature of 30 ℃,and the detection wavelength was set at 327 nm.[Results]Chlorogenic acid had a good linear relation in the range of 0.254 7-2.547 5 μg( R2= 0.999 9).The recovery rate was 97.8%,RSD = 1.82%( n = 9).[Conclusions]The content of chlorogenic acid in M.pubescens was determined by ultrasonic extraction and HPLC.The method was simple,stable and reliable and could be used for the quality control of M.pubescens.展开更多
基金Project (02JZY3029) supported by the Department of Science and Technology of Hunan Province Pro-ject (2002-772) supported by the Development Planning Commission of Hunan Province
文摘A high performance liquid chromatography (HPLC) method was established for simultaneous determina-tion of geniposidic acid, chlorogenic acid and geniposide in eucommia. Detection at 240 nm with a reversed-phasecolumn, CH3OH volume fraction, acidic additive and pH value of mobile phase were studied for their effects on theseparability of the compounds. The most suitable separation was obtained with isocratic gradient elution systemusing CH3OH-H2O-H3 PO4 (12.00: 87.96: 0.04, volume ratio) at a flow-rate of 1.0 mL/min. Under the experi-mental conditions, the capacity factors of three compounds are in 3-13. The sample is separated rightly. Theanalysis time is 30 min and the retention time of genfposidic acid, chlorogenic acid and geniposide are 6. 7 min,10.5 min and 21 min, respectively.
文摘[Objectives] To establish a method for determining the content of chlorogenic acid in Wuli Huichun Wan. [Methods] The content of chlorogenic acid in Wuli Huichun Wan was determined by high performance liquid chromatography( HPLC) combined with Agilent Eclipse Plus C18 column( 4. 6 mm × 250 mm,5 μm),in mobile phase of 0. 4% phosphoric acid solution-acetonitrile( 12∶ 88) at flow rate of1. 0 m L/min,and detection wavelength of 327 nm. [Results] The linearity of chlorogenic acid in the range of 4-48 μg injection was good( r = 1); the average recovery rate was 99. 61% and the RSD was 0. 98%. [Conclusions] The established method is simple and accurate and has high reproducibility,thus can be used as quality control method for Wuli Huichun Wan.
基金supported by the Science and Technology Bureau of Liaoning Province (No. 2007226011)the Shenyang Technology Bureau (No. 1071164-9-00)
文摘The present study was aimed at the comparison of the pharmacokinetics of pure chlorogenic acid and extract of Solanum lyratum Thunb. The animals were allocated to two groups, and were administered chlorogenic acid or extract of S. lyratum Thunb. at a dose of 50.0 mg/kg orally. Blood samples were collected up to 8 h post-dosing. Plasma chlorogenic acid analyses were performed using an HPLC method with UV detector. The pharmacokinetic parameters were evaluated using non-compartmental assessment. Significant differences existed in the two groups for AUCo-t, AUCo-∞ and CLz/F. The reliable HPLC method was successfully applied to the determination of chlorogenic acid in rat plasma at dosting of 50.0 mg/kz.
基金Supported by Guangzi Post-doctor Innovative Practice Base Open Project(2017002A)
文摘[Objectives] This study was conducted to establish a method for determination of chlorogenic acid in Mussaenda pubescens Ait.f.[Methods]HPLC used SHISEIDO C_(18) MG Ⅱ column( 5 μm,4.6 mml.D.× 250 mm) as chromatographic column and acetonitrile-0.4% phosphoric acid solution( 9∶91) as mobile phase.The separation was performed at a flow rate of 1.0 ml/min and a column temperature of 30 ℃,and the detection wavelength was set at 327 nm.[Results]Chlorogenic acid had a good linear relation in the range of 0.254 7-2.547 5 μg( R2= 0.999 9).The recovery rate was 97.8%,RSD = 1.82%( n = 9).[Conclusions]The content of chlorogenic acid in M.pubescens was determined by ultrasonic extraction and HPLC.The method was simple,stable and reliable and could be used for the quality control of M.pubescens.