目的比较不同炮制条件对地骨皮化学成分的影响,优选饮片炮制方法。方法采用HPLC-IT-TOF/MS;ZORBAX SB-Aq C_(18)色谱柱;流动相为0.1%甲酸水溶液-乙腈梯度洗脱;柱温40℃;流速0.3 mL/min;进样体积5μL;电喷雾离子源(Electrospray Ionizati...目的比较不同炮制条件对地骨皮化学成分的影响,优选饮片炮制方法。方法采用HPLC-IT-TOF/MS;ZORBAX SB-Aq C_(18)色谱柱;流动相为0.1%甲酸水溶液-乙腈梯度洗脱;柱温40℃;流速0.3 mL/min;进样体积5μL;电喷雾离子源(Electrospray Ionization,ESI),正、负离子模式下扫描,根据相对分子质量和碎片离子等质谱信息,结合文献信息以及数据库鉴定化学成分,并以各成分的离子峰面积比作为不同炮制品的变化指数进行比较。根据鉴定结果将地骨皮5种主要活性成分的相对含量进行逼近理想解排序法分析(technique for order preference by similarity to ideal solution,TOPSIS),以客观评价经不同炮制方法所得地骨皮的品质。结果共鉴定23种化合物,其中亚麻酸在烘干80℃、焙干100℃时消失,甜菜碱在淘洗2次后消失。地骨皮在不同炮制方法下各成分含量差异较大,随着淘洗次数的增加,地骨皮中成分含量迅速下降;甜菜碱含量随着烘制温度的升高而升高,相反咖啡酰丁二胺含量会随着烘制温度的升高而降低;地骨皮甲素、地骨皮乙素均在50℃烘干时含量最高,绿原酸晒干时含量最高。通过对7种地骨皮样品进行综合评价分析,发现30℃晒干,淘洗1次(S1)为最佳炮制方式。结论地骨皮各炮制品中化合物种类和成分均发生变化;S1为最佳炮制方式。阐明了经不同炮制方法后地骨皮成分变化规律,并为地骨皮质量控制和评价奠定基础。展开更多
目的建立同时测定马齿苋中10个指标成分含量的高效液相色谱法(high performance liquid chromatography,HPLC),用化学计量学和熵权-逼近理想解排序法(entropy weight-technique for order preference by similarity to an ideal solutio...目的建立同时测定马齿苋中10个指标成分含量的高效液相色谱法(high performance liquid chromatography,HPLC),用化学计量学和熵权-逼近理想解排序法(entropy weight-technique for order preference by similarity to an ideal solution,EW-TOPSIS)对马齿苋的质量进行综合分析和评价,为该产品质量控制和标准提升提供参考依据。方法用高效液相色谱法同时测定5省18批马齿苋样品中柠檬酸、琥珀酸、咖啡酸、染料木苷、木犀草素、槲皮素、东莨菪亭、6,7-二羟基香豆素、异茴香内酯和佛手柑内酯的含量,用化学计量学方法对含量测定结果进行综合分析,挖掘影响马齿苋质量的主要潜在标志物,联合熵权-逼近理想解排序法对不同产地来源的马齿苋进行质量评价。结果10种成分分别在各自线性范围内线性关系和准确度良好;化学计量学分析结果显示,18批马齿苋聚为3类,呈现一定的产区差异;木犀草素、槲皮素、琥珀酸和柠檬酸是影响马齿苋产品质量的主要潜在标志物;熵权-逼近理想解排序法分析结果显示四川和贵州地区所产马齿苋质量最优,其次为河南、辽宁和吉林。结论所建立的高效液相色谱法能同时测定马齿苋中10个指标成分的含量,化学计量学和熵权-逼近理想解排序法可用于马齿苋的综合质量评价。展开更多
A new method using high-performance liquid chromatography coupled with ultra violet detection(HPLC–UV)was developed and validated for the simultaneous quantification of atazanavir,dolutegravir,darunavir,efavirenz,etr...A new method using high-performance liquid chromatography coupled with ultra violet detection(HPLC–UV)was developed and validated for the simultaneous quantification of atazanavir,dolutegravir,darunavir,efavirenz,etravirine lopinavir,raltegravir,rilpivirine and tipranavir in human plasma.For the first time we reported here the development and validation of an HPLC–UV assay to quantify the frequently administered 9antiretroviral compounds including dolutegravir and rilpivirine.A simple solid phase extraction procedure was applied to 500 μL aliquots of plasma.The chromatographic separation of the drugs and internal standard(quinoxaline) was achieved with a gradient of acetonitrile and sodium acetate buffer on a C_(18) reverse-phase analytical column with a 25 min analytical run time.Calibration curves were optimised according to the therapeutic range of drug concentrations in patients,and the coefficient of determination(r^2) was higher than0.99 for all analytes.Mean intraday and interday precisions(RSD) for all compounds were less than 15.0%,and the mean accuracy(% deviation from nominal concentration) was also found to be less than 15.0%.Extraction recovery range was between 80% and 120% for all drugs analysed.The solid phase extraction and HPLC–UV method enable a specific,sensitive,and reliable simultaneous determination of nine antiretroviral agents in plasma.Good extraction efficiency and low limit of HPLC–UV quantification make this method suitable for use in clinical trials and therapeutic drug monitoring.展开更多
文摘目的比较不同炮制条件对地骨皮化学成分的影响,优选饮片炮制方法。方法采用HPLC-IT-TOF/MS;ZORBAX SB-Aq C_(18)色谱柱;流动相为0.1%甲酸水溶液-乙腈梯度洗脱;柱温40℃;流速0.3 mL/min;进样体积5μL;电喷雾离子源(Electrospray Ionization,ESI),正、负离子模式下扫描,根据相对分子质量和碎片离子等质谱信息,结合文献信息以及数据库鉴定化学成分,并以各成分的离子峰面积比作为不同炮制品的变化指数进行比较。根据鉴定结果将地骨皮5种主要活性成分的相对含量进行逼近理想解排序法分析(technique for order preference by similarity to ideal solution,TOPSIS),以客观评价经不同炮制方法所得地骨皮的品质。结果共鉴定23种化合物,其中亚麻酸在烘干80℃、焙干100℃时消失,甜菜碱在淘洗2次后消失。地骨皮在不同炮制方法下各成分含量差异较大,随着淘洗次数的增加,地骨皮中成分含量迅速下降;甜菜碱含量随着烘制温度的升高而升高,相反咖啡酰丁二胺含量会随着烘制温度的升高而降低;地骨皮甲素、地骨皮乙素均在50℃烘干时含量最高,绿原酸晒干时含量最高。通过对7种地骨皮样品进行综合评价分析,发现30℃晒干,淘洗1次(S1)为最佳炮制方式。结论地骨皮各炮制品中化合物种类和成分均发生变化;S1为最佳炮制方式。阐明了经不同炮制方法后地骨皮成分变化规律,并为地骨皮质量控制和评价奠定基础。
文摘目的建立同时测定马齿苋中10个指标成分含量的高效液相色谱法(high performance liquid chromatography,HPLC),用化学计量学和熵权-逼近理想解排序法(entropy weight-technique for order preference by similarity to an ideal solution,EW-TOPSIS)对马齿苋的质量进行综合分析和评价,为该产品质量控制和标准提升提供参考依据。方法用高效液相色谱法同时测定5省18批马齿苋样品中柠檬酸、琥珀酸、咖啡酸、染料木苷、木犀草素、槲皮素、东莨菪亭、6,7-二羟基香豆素、异茴香内酯和佛手柑内酯的含量,用化学计量学方法对含量测定结果进行综合分析,挖掘影响马齿苋质量的主要潜在标志物,联合熵权-逼近理想解排序法对不同产地来源的马齿苋进行质量评价。结果10种成分分别在各自线性范围内线性关系和准确度良好;化学计量学分析结果显示,18批马齿苋聚为3类,呈现一定的产区差异;木犀草素、槲皮素、琥珀酸和柠檬酸是影响马齿苋产品质量的主要潜在标志物;熵权-逼近理想解排序法分析结果显示四川和贵州地区所产马齿苋质量最优,其次为河南、辽宁和吉林。结论所建立的高效液相色谱法能同时测定马齿苋中10个指标成分的含量,化学计量学和熵权-逼近理想解排序法可用于马齿苋的综合质量评价。
基金supported by “Ministero della Salute” “Ricerca corrente 2015” grant to E.C.
文摘A new method using high-performance liquid chromatography coupled with ultra violet detection(HPLC–UV)was developed and validated for the simultaneous quantification of atazanavir,dolutegravir,darunavir,efavirenz,etravirine lopinavir,raltegravir,rilpivirine and tipranavir in human plasma.For the first time we reported here the development and validation of an HPLC–UV assay to quantify the frequently administered 9antiretroviral compounds including dolutegravir and rilpivirine.A simple solid phase extraction procedure was applied to 500 μL aliquots of plasma.The chromatographic separation of the drugs and internal standard(quinoxaline) was achieved with a gradient of acetonitrile and sodium acetate buffer on a C_(18) reverse-phase analytical column with a 25 min analytical run time.Calibration curves were optimised according to the therapeutic range of drug concentrations in patients,and the coefficient of determination(r^2) was higher than0.99 for all analytes.Mean intraday and interday precisions(RSD) for all compounds were less than 15.0%,and the mean accuracy(% deviation from nominal concentration) was also found to be less than 15.0%.Extraction recovery range was between 80% and 120% for all drugs analysed.The solid phase extraction and HPLC–UV method enable a specific,sensitive,and reliable simultaneous determination of nine antiretroviral agents in plasma.Good extraction efficiency and low limit of HPLC–UV quantification make this method suitable for use in clinical trials and therapeutic drug monitoring.