高效和超高效液相色谱法测定乐脉丸中丹酚酸B含量的比较

目的运用高效液相色谱法和超高效液相色谱法对乐脉丸中丹酚酸B的含量进行测定,并对测定方法和结果进行比较。方法高效液相色谱法中,色谱柱采用迪马C18柱（250 mm×4.6 mm,5μm）,流动相为甲醇-乙腈-17%甲酸（27∶4∶69）,流速为1.0 mL/min,检测波长为286 nm,进样量为5μL。超高效液相色谱法中,色谱柱采用Acquity UPLC BEH C18柱（50 mm×2.1 mm,1.7μm）,流动相为甲醇-乙腈-17%甲酸（20∶1∶79）,流速为0.6 mL/min,进样量为1μL。结果高效液相色谱法主峰出峰时间为45 min,3批样品含量分别为16.94,12.06,6.84 mg/g;超高效液相色谱法主峰出峰时间为1 min,3批样品含量分别为16.93,12.06,6.84 mg/g。结论两种方法均可用于测定乐脉丸中丹酚酸B的含量,与高效液相色谱法相比,超高效液相色谱法加快了分析速度,提高了分析效率,减少了有机溶剂的使用。     

UPLC同时测定不同产地川芎中8种活性成分的含量

目的建立同时测定不同产地川芎中咖啡酸、香草醛、阿魏酸、洋川芎内酯I、洋川芎内酯H、丁基苯酞、藁本内酯和丁烯基苯酞含量的UPLC方法。方法采用ACQUITY UPLC,HSS T3色谱柱(2.1 mm×100 mm,1.8μm),流动相为甲醇-0.03%磷酸水溶液,梯度洗脱,PDA检测器,针对不同组分,选择其最大吸收波长作为检测波长。结果咖啡酸、香草醛、阿魏酸、洋川芎内酯I、洋川芎内酯H、丁基苯酞、藁本内酯和丁烯基苯酞分别在0.082 8～3.312μg.mL 1,0.047 85～1.914μg.mL 1,4.420～176.8μg.mL 1,2.035～81.4μg.mL 1,0.470 4～18.82μg.mL 1,1.044～41.75μg.mL 1,13.55～542.0μg.mL 1,1.785～71.40μg.mL 1内呈良好的线性关系,平均回收率分别为101.0%,99.1%,98.9%,103.6%,96.3%,102.8%,98.1%,98.0%。结论该方法简便、快捷、重复性好,可用于川芎药材及其制剂的质量控制。     

丹参总酚酸提取物UPLC指纹图谱及成分定性研究

目的:建立丹参总酚酸提取物的超高效液相色谱(UPLC)指纹图谱方法,并采用电喷雾离子源-四极杆-飞行时间质谱(ESI-Q-TOF MS)对其化学成分进行定性分析。方法:采用UPLC色谱系统,HSS T3色谱柱(2.1 mm×100 mm,1.7μm);流动相为乙腈-0.1%甲酸水溶液,梯度洗脱;流速0.4 mL.min-1;检测波长286 nm。质谱检测采用负离子V模式;电压2.5kV;离子源温度100℃;雾化温度300℃;雾化气600 L.h-1。结果:本方法在10 min内完成1次丹参总酚酸提取物的指纹图谱分析,各主要成分峰分离度良好,方法精密度、重复性的RSD均小于1.0%。对指纹图谱中的15个主要成分峰进行了鉴定,分别为丹参素、原儿茶醛、咖啡酸、丹酚酸F、丹酚酸H/L、丹酚酸G、丹酚酸D、丹酚酸E、迷迭香酸、紫草酸、丹酚酸B、异丹酚酸B/E、丹酚酸C和丹酚酸A。结论:本方法实现了丹参总酚酸提取物指纹图谱的快速、高效测定,同时解析了提取物中的化学组成,为高效、快速、全面控制其质量提供了基础。     

HPLC和UPLC法测定活血止痛制剂中阿魏酸

目的:建立活血止痛散和活血止痛胶囊中阿魏酸含量的HPLC和UPLC测定方法。方法:采用Agilent TC-C18和AQU-ITY UPLC BEH C18色谱柱,以甲醇-0.1%醋酸(30∶70)为流动相,流速分别为1.0 mL.min-1和0.2 mL.min-1,检测波长321 nm,柱温30℃。结果:阿魏酸在0.2～200μg.mL-1之间线性关系良好,HPLC和UPLC检出限分别为0.54 ng和0.13ng,平均回收率约为100%,RSD均小于3%。配对t检验结果显示HPLC和UPLC测定值无显著性差异。结论:方法简便、快速、灵敏、准确,可更好地控制活血止痛制剂的质量。     

超高效液相色谱-飞行时间质谱联用法测定人血浆中单硝酸异山梨酯

目的:建立测定人血浆中单硝酸异山梨酯的超高效液相色谱-飞行时间质谱联用法。方法:应用ACQUITY UPLC HssT3(1.8μm,2.1 mm×50 mm)色谱柱,以乙腈-0.1%甲酸水为流动相,梯度洗脱进行分离,流速0.50 mL·min-1。采用飞行时间质谱检测器,大气压电喷雾离子源(ESI),负离子全扫描检测。结果:血浆中内源性物质不干扰测定,每个样品分析时间为3.0 min,本法线性范围为0.02～1.00μg·mL-1,提取回收率为98.6%～109.0%,日内和日间的RSD分别小于8.7%和10.6%。结论:该方法灵敏、快速,重现性好,可用于单硝酸异山梨酯临床血药浓度监测和药动学研究。     

UPLC法测定大鼠血浆中Liguzinediol浓度以及动力学研究

目的建立测定大鼠血浆中Liguzinediol浓度的UPLC测定方法,探讨其在大鼠体内的药代动力学。方法血浆样品经甲醇提取后,上清液经N2吹干流动相复溶后注入UPLC分析,色谱柱为UPLC HSS T3柱(2.1 mm×100 mm,1.8μm),流动相为甲醇-水(28∶72,V∶V),流速为0.4 ml.min-1,检测波长278 nm。SD大鼠6只,iv给药10 mg.kg-1后,用UPLC法测定给药后大鼠血浆中Liguzinediol的浓度,利用DAS软件拟合并计算其药代动力学参数。结果 Ligu-zinediol的血药浓度在0.41～52.4 mg.L-1范围内呈线性,提取回收率均>80%,日内、日间精密度<10%,符合生物样品分析要求。大鼠静脉注射10 mg.kg-1的Liguzinediol,其血药浓度(C)-时间(t)曲线呈二室模型,主要药动学参数T12β、AUC(0-∞)、CL分别为1.62 h、18.36 mg.h.L-1、0.71 L.h-1.kg-1。结论该方法操作简便、快速、专属性强,可用于Liguzinediol的药代动力学及成药性研究。     

Development and validation of a stability indicating UPLC method for determination of ticlopidine hydrochloride in its tablet formulation

The objective of the current study was the development of a simple, precise and accurate isocratic reversed-phase stability indicating Ultra Performance Liquid Chromatography [UPLC] assay method and validated for determination of ticlopidine hydrochloride in solid pharmaceutical dosage forms. Isocratic separation was achieved on a Zorbax SB-C18 (50 mm × 4.6 mm, 1.8 μm) column using mobile phase of methanol–0.01 M ammonium acetate buffer, pH 5.0 (80:20, v/v) at a flow rate of 0.8 ml min⁻¹, the injection volume was 4.0 μl and the detection was carried out at 235 nm by using photo-diode array detector. The drug was subjected to oxidation, hydrolysis, photolysis and heat to apply stress condition. The method was validated for specificity, linearity, precision, accuracy, robustness and solution stability. The method was linear in the drug concentration range of 62.5–375 μg ml⁻¹ with a correlation coefficient of 0.9999. The precision (relative standard deviation – RSD) of six samples was 1.31% for repeatability and the intermediate precision [RSD] among six-sample preparation was 0.77%. The accuracy (recovery) was between 98.80% and 101.50%. Degradation products produced as a result of stress studies did not interfere with detection of ticlopidine hydrochloride and the assay can thus be considered stability indicating.     

Validated UPLC method for the fast and sensitive determination of steroid residues in support of cleaning validation in formulation area

An ultra performance liquid chromatographic (UPLC) method was developed for simultaneous determination of seven steroid (dienogest, finasteride, gestodene, levonorgestrel, estradiol, ethinylestradiol, and norethisterone acetate) active pharmaceutical ingredient (API) residues. A new, generic method is presented, with which it is possible to verify the cleaning process of a steroid producing equipment line used for the production of various pharmaceuticals. The UPLC method was validated using an UPLC™ BEH C18 column with a particle size of 1.7 μm (50 mm × 2.1 mm) and acetonitrile–water (48:52, v/v) as mobile phase at a flow rate of 0.55 ml/min. Method development and method validation for cleaning control analysis are described. The rapid UPLC method is suitable for cleaning control assays within good manufacturing practices (GMP) of the pharmaceutical industry.     

Monitoring healthy metabolic trajectories with nutritional metabonomics

Metabonomics is a well established analytical approach for the analysis of physiological regulatory processes via the metabolic profiling of biofluids and tissues in living organisms. Its potential is fully exploited in the field of "nutrimetabonomics" that aims at assessing the metabolic effects of active ingredients and foods in individuals. Yet, one of the greatest challenges in nutrition research is to decipher the critical interactions between mammalian organisms and environmental factors, including the gut microbiota. "Nutrimetabonomics" is today foreseen as a powerful approach for future nutritional programs tailored at health maintenance and disease prevention.     

基于液质联用的人血清代谢组学样品前处理方法研究

目的 建立一种稳定、可靠且适合大样本分析的血清代谢组学前处理方法。方法 采用超高效液相色谱-四级杆飞行时间串联质谱(ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry,UPLC-QTOF-MS)分析方法,对经三倍乙腈沉淀处理（方法一）后直接进样、三倍乙腈沉淀后再通过浓缩复溶方式处理（方法二）后进样及一倍乙腈沉淀后再通过超滤管截留大分子方式处理（方法三）后进样的血清样品前处理方法进行对比分析,同时利用质控样品对仪器精密度、稳定性、重复性进行考察。结果 ESI+和ESI-扫描模式下,方法二可检测到的代谢物特征数最多,方法三次之,而方法一最少。方法一与方法三在ESI+和ESI-扫描模式下测得离子峰的峰强度均值比较差异均无统计学意义（均P＞0.05）,但均大于方法二（均P＜0.05）;且方法二和方法三大部分离子峰的峰强度变异系数（coefficient of variation,CV）值＜25.00%,而方法一中大部分离子峰的峰强度CV值＞25.00%,说明方法三的代谢物提取重复性更好,既能保证检测到的特征总数,又能保证检测到的代谢物的峰强度。实验过程中仪器的精密度、稳定性、重复性均较好。结论 一倍乙腈沉淀蛋白后再通过超滤管截留大分子的血清前处理方法操作简便、重复性较好,且能更全面保留和检测血清样品中的小分子化合物,适用于血清代谢组学大批量样本分析。