Modernization of Chinese herbal compound and the high performance liquid chromatography tandem mass spectrometry (HPLC-MS)

Chinese herbal compound is playing an important role on curing human diseases.And it has been a trend that Chinese herbal compound is being used all over the world in 21 century.However,our Chinese herbal compound is facing serious challenge for the lack of canonical system of quality criterion for Chinese herbal compound so it has been a urgent problem to set up the quality control standards and reveal therapeutic basis of Chinese herbal compound.In order to give full play to the advantages of Chinese herbal compound,modern scientific and technological is used to research of Chinese herbal compound,especially the high performance liquid chromatography tandem mass spectrometry(HPLC-MS),because it is high sensitive,rapid,and obtain more information.It is very necessary that HPLC-MS is uesed to elucidate the effective components of basic substances of Chinese Herbal Compound,and endow traditional Chinese medicine with modern scientific connotation.

High Performance Liquid Chromatography-Electrospray Ionization-Mass Spectrometric Analysis of Bilobalide and Ginkgolides in Ginkgo biloba L. Leaves

The ginkgo terpenoids including bilobalide and ginkgolides are the main pharmaceutical components in the leaves or extracts of Ginkgo biloba L. In this paper, the analysis of bilobalide and ginkgolides in leaves of Ginkgo biloba L. by high performance liquid chromatography (HPLC)-electrospray ionization (ESI)-mass spectrometry (MS) was carried out. The separation was performed on Inertsil ODS3 column with methanol-water (36:64) as mobile phase, with 1 mL·min -1 of flow rate at 35℃. Then the mass spectrum analysis was conducted by ZMD micromass electrospray ionization (ESI)-mass spectrometer (MS). The HPLC total ion chromatogram and selected ion chromatogram (with 325, 407, 423, 439 of m/z) of the sample and ESI-/MS mass spectra of the peaks in the chromatograms were obtained. So bilobalide, ginkgolide A, B, C and J in Ginkgo biloba L. leaves were identified. The method is easy and rapid, with a good accuracy.

Bio-analytical method development and validation of Rasagiline by high performance liquid chromatography tandem mass spectrometry detection and its application to pharmacokinetic study

The most suitable bio-analytical method based on liquid liquid extraction has been developed and validated for quantification of Rasagiline in human plasma. Rasagiline-13C3 mesylate was used as an internal standard for Rasagiline. Zorbax Eclipse Plus C18 （2.1 mm × 50 mm, 3.5 um） column provided chromatographic separation of analyte followed by detection with mass spectrometry. The method involved simple isocratic chromatographic condition and mass spectrometric detection in the positive ionization mode using an API-4000 system. The lotal run time was 3.0 min. The proposed method has been validated with the linear range of 5 12000 pg/mL for Rasagiline. The intra-run and inter-run precision values were within 1.3% 2.9% and 1.6% 2.2% respectively for Rasagiline. The overall recovery for Rasagiline and Rasagiline-13C3 mesylate analog was 96.9% and 96.7% respectively. This validated method was successfully applied to the bioequivalence and pharmacokinetic study of human volunteers under fasting condition.

Analysis of ganciclovir and its related substances using high performance liquid chromatography and liquid chromatography-mass spectrometry methods

Objective High performance liquid chromatography(HPLC)and liquid chromatography-mass spectrometry(LC/MS)methods were developed for the determination of ganciclovir and its related substances.Methods A Hypersil ODS2 column(4.6 mm×250 mm,5 μm)was used with a mobile phase of 0.02 M potassium dihydrogen phosphate buffer(pH 6.0)-methanol(92∶8)at a flow rate of 1.0 mL/min,and UV detector set at 254 nm was used for monitoring the eluents.Results The method was simple,rapid,selective and capable of separating all related substances at trace level with a detection limit of 0.04 μg/mL.It has been validated with respect to accuracy,precision,linearity,and limits of detection and quantification.The linearity range was 10.2-153.0 μg/mL with r=0.9998.The percentage recoveries ranged from 96.7% to 101.6%,and RSD was 1.24%-1.96%(n=5).Conclusion The method was found to be suitable not only for monitoring the reactions during the process development but also for quality control of ganciclovir.For identification of related substances,LC/MS was used.The mainly related substances of ganciclovir active pharmaceutical ingredients(API)were determined as guanine,(1,3-dioxolan-4-yl)methyl acetate,and diacetyl guanine.

Metabolomic Studies Using High Performance Liquid Chromatography and Tandem Mass Spectrometry to Discover Quality Markers for Oriental Beauty (Dongfang Meiren) Tea

In this study, a high-performance liquid chromatograph and an electrospray ionization (ESI) triple quadrupole mass spectrometry (TQ MS) detector were used to scan Oriental Beauty tea of different grades and prices. Principle component analysis (PCA) of the profiling data was performed for pattern recognition, clearly showing that the proposed MS profiling method was able to classify Oriental Beauty tea into different grades. The component mass ions primarily responsible for the separation were selected with high loading strength in the PCA for subsequent identification with tandem mass (MS/MS). Caffeine, citrate and salicylate were verified, whereas certain other compounds remained ambiguous. Regression analysis considering caffeine, citrate and salicylate showed a linear relationship between the prices of the Oriental Beauty tea with an adjusted R2 of 0.84. If all the selected marker ions (in addition to caffeine, citrate and salicylate) could have been identified and incorporated into regression analysis, a stronger relationship could have been confirmed. These results suggest that metabolomics can facilitate the determination of real markers in the quality control of Oriental Beauty tea, and may lead to the further application of metabolomics in other food quality controls.

Simultaneous Determination of Ultraviolet Absorbers and Antibacterial Agents in Textiles by Ultra-High Performance Liquid Chromatography/Orbitrap High Resolution Mass Spectrometry

This paper reported a new analytical method for the simultaneous determination of seven benzotriazole ultraviolet absorbers and seven antibacterial agents in textiles. After ultrasonic extraction for the textile samples in methanol, the solutions were analyzed by ultra-high performance liquid chromotagraphy/orbitrap high resolution mass spectrometry (UPLC/Orbitrap HRMS). It showed that a good chromatographic separation for these target compounds was achieved by a Hypersil GOLD column (100 mm × 2.1 mm × 1.9 μm) with a gradient elution of methanol and 0.1% aqueous formic acid solution (containing 0.5 mmol/L ammonium acetate). Triclosan and 4-chloro-3,5-dimethyl phenol (PCMX) were detected by the orbitrap HRMS in an electrospray ionization (ESI) negative mode while the other twelve target compounds were detected by orbitrap HRMS in ESI positive mode. Full scan experiment was performed over the range from m/z 100 to m/z 500. These target compounds were routinely detected with mass accuracy below 2 × 10-6 (2 ppm) at the optimized conditions. The results showed that the limits of detection (LODs) were in the range from 0.1 to 0.3 μg/kg. The blank samples were spiked at three levels and their average recoveries varied from 80.5% to 96.3% while the relative standard deviation (RSD) changed from 3.2% to 9.9%. The present method was also applied for the determination of those ultraviolet absorbers and antibacterial agents in the commercial textiles.

Chemical Components of Achyranthes bidentata Leaves by Ultra High Performance Liquid Chromatography-Mass Spectrometry

[Objectives] To study the chemical components and relative content of Achyranthes bidentata leaves and provide a scientific basis for further development and utilization of A. bidentata leaves.[Methods] The chemical components of A. bidentata leaves were rapidly analyzed using the ultra high performance liquid chromatography-time of flight-high resolution mass spectrometry (UHPLC-TOF-MS).[Results] Thirty eight chemical compounds were identified in samples of A. bidentata leaves collected from Wen County of Henan Province, in which seven chemical compounds had the relative content higher than 5%, linoleic acid reached 25.7% and inokosterone A reached 13.8%.[Conclusions] A. bidentata leaves contain many kinds of chemical compounds. This study is expected to provide a certain basis for further extraction of linoleic acid and inokosterone A.

Determination of thyreostats in bovine urine using ultra-high performance liquid chromatography-tandem mass spectrometry

Five thyreostats(TSs),namely tapazole,thiouracil,methylthiouracil,propylthiouracil,and phenylthiouracil,were determined in bovine urine using ultra-high performance liquid chromatography-tandem mass spectrometry(UHPLC-MS/MS)in positive electrospray ionization mode.Extraction and clean-up were achieved using a ChemElut cartridge with tert-butyl methyl ether,without a derivatization step.Separation was achieved on an Acquity UPLC SS T3 column.The mobile phase was acetonitrile and water containing 0.2%(v/v)formic acid.The mass spectrometer was operated in multiple reaction monitoring mode.Urine samples were spiked with TS solution at levels corresponding to 5,10,15,and 20μg/L.The accuracy(internal standard corrected)ranged from 92%to 107%,with a repeatability precision(relative standard deviation,RSD)less than 15%for all five analytes.The RSDs within-laboratory reproducibility was less than 26%.The decision limits(CCα)and detection capabilities(CCβ)were obtained from a calibration curve and were in the ranges of 3.1-6.1μg/L and 4.0-7.4μg/L,respectively.The CCαand CCβvalues were below the recommended concentration,which was set at 10μg/L.The results show that the described method is suitable for the direct detection of TSs in bovine urine.This method can also be used to determine TSs in porcine urine.

Determination of okadaic acid related toxins from shellfish (<i>sinonovacula constricta</i>) by high performance liquid chromatography tandem mass spectrometry

Consumption of shellfish contaminated with algal toxins produced by marine dinoflagellates can lead to diarrhetic shellfish poisoning (DSP). It was therefore essential that there are analytical techniques to identify and quantify DSP toxins in shellfish. This new methodology could facilitate DSP monitoring and create a means of rapidly responding to incidents threatening public health. In the last years there were different analytical methods for DSP, such as mouse bioassay and LC-FLD. With the development of instrument, Liquid chromatography-mass spectrometry was substituted for other analytical methods with its good sensitivity and selectivity and without derivatization for the determination of DSP. In this report, a high performance liquid chromatogra-phytandem mass spectrometric(HPLC-MS/MS)method was developed for the simultaneous determination of okadaic acid (OA) and dinophysistoxins(DTX1) in Sinonovacula constricta. Optimization of pretreatment experiment was carried out to maximize recoveries and the effectiveness. The analytes were determined under multi-reactions monitoring (MRM) scan type with tandem mass analyzer using negative ion electrospray ionization (-ESI) mode .Finally, the detection and identification of OA and DTX-1 were based upon their retention times (RT) and the fragmentation patterns of their mass spectra. The method of LOQ for the two poisons was 0.02 mg·kg-1.The real sample test showed that this method could be used for sensitive, fast, and accurate determination of the two diarrheic shellfish poisons in shellfish.

Determination of 24 Allergens in Perfume with High Performance Liquid Chromatography Tandem Mass Spectrometry

A method of 24 allergens determination in cosmetics were established with high performance liquid chromatography tandem mass spectrometry. The targeted compounds were extracted with acetonitrile and determined with LC-MS/MS (MRM mode) with external method. The linearity between concentrations and peak area ratio was obtained from 1.0~5.0 mg/L. The limits of detection were 1.0 mg/L for the instrument and 5.0 mg/kg for the method respectively. The LOQ was 15.0 mg/L. The average recoveries of 24 allergens were between 85.9% and 110.0% at spiked levels of 5, 10 and 20 mg/kg with relative standard derivation (RSDs) of 5.5%~12.0%(n=10). The method could be used as a reliable means for simultaneous quantitative determination of allergens in cosmetics.

HPLC-MS/MS法同时测定胆木不同部位6个成分的含量

目的:测定胆木茎、枝和叶中异长春花苷内酰胺、喜果苷、乌檀酰胺C、绿原酸、3,4,5-三甲氧基苯基-1-O-β-呋喃芹糖基(1→2)-β-D-吡喃葡萄糖苷、3,4-二甲氧基苯基-1-O-β-呋喃芹糖基(1→2)-β-D-吡喃葡萄糖苷6个成分的含量。方法:采用HPLC-MS/MS法,色谱柱为Phenomenex Kinete EVO C18100Å(50 mm×2.1 mm,2.6μm)柱;流动相为0.5‰甲酸溶液-甲醇,梯度洗脱;流速为0.4 mL/min;柱温为40℃;进样量为3μL;电喷雾离子源,多反应监测负离子模式。结果:异长春花苷内酰胺、喜果苷、乌檀酰胺C、绿原酸、3,4,5-三甲氧基苯基-1-O-β-呋喃芹糖基(1→2)-β-D-吡喃葡萄糖苷、3,4-二甲氧基苯基-1-O-β-呋喃芹糖基(1→2)-β-D-吡喃葡萄糖苷的线性范围分别为0.025~2μg/mL、0.0125~2μg/mL、0.05~2μg/mL、0.025~2μg/mL、0.0125~2μg/mL、0.0125~2μg/mL(r≥0.9991),精密度、稳定性(24 h)、重复性试验RSD<5.00%,平均加样回收率为95.13%~103.02%(RSD<4.00%)。含量测定结果显示6个成分在胆木不同部位中的含量存在较大差异。结论:所建立的方法简便、快速、灵敏,适用于胆木药材中6个成分的同时检测。

基于UHPLC-MS/MS法分析补肾利咽汤物质基准的特征图谱暨多指标成分的筛选与含量测定研究

目的采用超高效液相-质谱(UHPLC-MS/MS)法同时测定补肾利咽汤(BSLYT)中化学成分,建立BSLYT物质基准的高效液相色谱指纹图谱及莫诺苷、马钱苷、木蝴蝶苷A、木蝴蝶苷B、黄芩苷、落新妇苷等6种主要成分的含量测定方法,为质量控制提供参考。方法利用质谱数据,建立指纹图谱。用外标法计算BSLYT样品中主要成分的含量,并结合化学计量学方法分析不同批次样品的差异。结果质谱共指认出了69种化合物,经过与高效液相色谱比对,共指认出13种化合物。15批BSLYT物质基准特征图谱的相似度在0.90以上,共指认了27个共有峰。聚类分析(CA)将物质基准分为2类,即S1、S2、S5、S8、S9、S13、S15为一类,S3、S4、S6、S7、S10-S12、S16为一类。通过主成分分析(PCA)和正交偏最小二乘法判别分析(OPLSDA),筛选出影响物质基准分类的化学成分,分别归属于木蝴蝶、山茱萸和土茯苓。多指标成分含量测定6个成分,分别为莫诺苷、马钱苷、木蝴蝶苷A、木蝴蝶苷B、黄芩苷、落新妇苷含量范围分别在0.31%-0.51%、0.12%-0.22%、0.09%-0.19%、0.09%-0.24%、0.07%-0.18%、0.08%-0.29%。结论本文建立的指纹图谱和多指标含量测定方法准确、稳定,为补肾利咽汤的物质基准及相关制剂的质量控制提供依据。

HPLC-MS/MS法测定棉花纤维中6种脱叶剂的残留量

建立了一种高效液相色谱-串联质谱法(HPLC-MS/MS)测定棉花纤维中噻苯隆、噻节因、敌草隆、脱叶磷、乙烯利、环丙酸酰胺6种脱叶剂残留量的检测方法。超声萃取溶剂采用乙腈和水(体积比1∶1),超声萃取20 min后过滤,采用高效液相-串联质谱(HPLC-MS/MS)分析。该方法的目标物质在一定的浓度范围内具有良好的线性关系,相关系数均大于0.995,6种化合物的平均回收率在60.8%~101.6%,相对标准偏差RSD在2.1%~8.6%,乙烯利、噻节因、脱叶磷的定量限为1.0 mg/kg,环丙酸酰胺、噻苯隆、敌草隆的定量限为0.5 mg/kg。

HPLC-MS/MS结合液液萃取法检测尿样中22种新烟碱类农药及其代谢物

建立了高效液相色谱-串联质谱(HPLC-MS/MS)同时检测尿液中22种新烟碱类农药(NEOs)及其代谢物的分析方法。尿样经酶解,甲酸调节pH值,液液萃取法提取,HSS T3色谱柱分离后,以(0.1%甲酸+5mmol/L甲酸铵)/水-乙腈作为流动相进行梯度洗脱,正/负离子模式切换扫描,多反应监测(MRM)模式检测,内标法定量。结果表明,22种NEOs及其代谢物在各自质量浓度范围内呈良好线性关系(r^(2)>0.995 0),方法检出限和定量下限分别为0.05~0.10 ng/mL和0.15~0.30 ng/mL;在低、中、高3个加标水平下,平均回收率为64.5%~125%,相对标准偏差(RSD)为0.10%~12%。样品稳定性实验表明,尿样采集后应尽快检测。利用该方法对54份真实尿样进行测定,均有不同程度的检出。所建立的方法高效、稳定,可实现22种NEOs及代谢物的同时检测。

HPLC-MS/MS测定保健食品中6种大麻素

目的:利用高效液相色谱-串联三重四极杆质谱(HPLC-MS/MS)对保健食品中6种大麻素进行定性定量分析。方法:HLB固相萃取小柱净化,采用XBridge C18色谱柱,乙腈溶液作为有机相,10mmol·L^(-1)乙酸铵水溶液作为水相,2种离子模式同时扫描,同位素内标定量。结果:所测大麻素在1-100μg·L^(-1)浓度范围均呈现良好线性关系,相关系数(r^(2))均>0.999。方法的检出限和定量限分别为5μg·kg^(-1)和10μg·kg^(-1)。该方法稳定性好,灵敏度高,适用于常见保健食品中6种大麻素的定性定量分析。结论:本研究成功建立了保健食品中6种大麻素的定性定量分析,为保健食品品质评价、安全监管及风险防范提供技术支持。

Determination of 13 preservatives in cosmetics by high performance liquid chromatography and verification by mass spectrometry

A method using high performance liquid chromatography(HPLC)was developed for the s imultaneous determination of 13 preservatives(levulinic acid,p-hydroxyacetophenone,raspberry ketone,p-anisic acid,caprylhydroxamic acid,hydroxyethoxyphenyl butanone,methylisothiazolinone,phenoxyethanol,b e n z oic acid,methylparaben,chlorphenesin,dehydroacetic acid,and 5-bromo-5-nitro-1,3-dioxane)in cosmetics.Different types of samples were ultrasonically extracted by methanol,then the separation of 13 preservatives was carried out on a column of Agilent ZORBAX Eclipse XDB-C18(250 mm×4.6 mm,5μm)by gradient elution at a flow rate of 1.0 mL/min,using 0.1%phosphoric acid solution and acetonitrile as mobile phases.The column temperature was 30℃,and the detection was completed by a diode array detector with the wavelengths at 275,230 and 210 nm.Suspected positive samples were further confirmed by liquid chromatography-tandem mass spectrometry or gas chromatography-mass spectrometry.The linear regression analysis data shows good linearity for 13 preservatives in the respective mass concentration range,with their correlation coefficients(r)greater than 0.9998.The limits of detection(LODs)and limits of quantitation(LOQs)of the method are in the ranges of 0.4-100.0 mg/kg and 1.2-250.0 mg/kg,respectively.At three spiked levels,the average recoveries for 13 target compounds in three kinds of matrix samples are within 84.0%-115.4%,and the relative standard deviations(RSD)are within 0.5%-4.8%(n=6).This method is convenient,efficient,and precise,which can be used for qualitative and quantitative analysis of common preservatives in daily cosmetics.

市售橄榄油中铜-焦脱镁素a的HPLC-MS/MS快速测定

为了快速、准确检测市售橄榄油中非法添加的脂溶性色素,建立了一种测定橄榄油中铜-焦脱镁素a的高效液相色谱串联质谱法(HPLC-MS/MS)。使用SPE柱对样品进行净化前处理,随后通过HPLC-MS/MS进行定性和定量检测,色谱分析采用C8色谱柱,以甲醇-1 mol/L乙酸铵水溶液(体积比8∶2)和甲醇-丙酮(体积比6∶4)作为流动相,进行梯度洗脱;质谱分析采用大气压化学电离,负离子扫描模式,多重反应监测模式,电子倍增电压600 V,碎裂电压260 V,用外标法进行定量。经过方法学验证,该方法的检出限和定量限分别为12μg/kg和64μg/kg,回收率为91.0%~106.0%,相对标准偏差为3.9%~5.7%。该方法具有较高的灵敏度和精密度,能够准确、快速地检测市售橄榄油中的铜-焦脱镁素a。

高效液相色谱-质谱法(HPLC-MS)测定化妆品中达克罗宁的含量

建立了一种高效液相色谱-质谱法(HPLC-MS)测定化妆品中达克罗宁含量的方法。样品经乙腈提取15 min后,用体积分数20%乙腈溶液稀释,经Capcell PAK C_(18)色谱柱(100 mm×2.1 mm×2μm)分离后,多反应监测模式进行检测。结果表明:达克罗宁在1.0~25.0 ng/mL线性关系良好,相关系数(r)大于0.995;加标回收率在89.4%~104.5%。该方法高效、准确,可用于化妆品中达克罗宁的定性和定量检测。

HPLC-MS/MS法测定白血病患者血浆奥雷巴替尼的方法学研究及临床应用

目的建立测定白血病患者血浆奥雷巴替尼浓度的高效液相色谱串联质谱法,并应用于临床治疗药物监测,为临床合理用药提供可靠依据。方法以帕纳替尼-d8为内标,用甲醇沉淀血浆蛋白和萃取奥雷巴替尼。色谱柱为Welch Ultimate XB-C18柱(50mm×4.6 mm,5μm),柱温为60℃,流动相为水溶液(含0.1%甲酸+2 mmol/L乙酸铵)-甲醇溶液(含0.1%甲酸),流速为0.8 mL/min,梯度洗脱;采用电喷雾正离子模式,多反应监测扫描,奥雷巴替尼定量离子对m/z 533.3→260.1和定性离子对m/z 533.3→433.3,内标离子对m/z 541.1→260.2。对40例服用奥雷巴替尼的白血病患者血浆样本进行浓度监测,运用IBM SPSS Statistics 27.0和OriginPro 2021软件对结果数据进行统计分析。结果奥雷巴替尼线性范围为1~250 ng/mL(r=0.9980),定量下限为1 ng/mL,提取回收率为100.28%~101.27%,日内精密度RSD为1.15%~3.87%,日间精密度RSD为2.32%~3.68%。结论该方法操作简便、特异性强、灵敏度高,可用于测定白血病患者奥雷巴替尼血药浓度。

基于HPLC-MS/MS测定替考拉宁中4种黄曲霉毒素

建立高效液相色谱-三重四极杆质谱法(HPLC-MS/MS)测定替考拉宁中4种黄曲霉毒素AFB1、AFB2、AFG1、AFG2。样品经溶解、萃取、氮气吹干、再溶解处理,去除了基质对目标物检测的干扰;处理样品经C_(18)色谱柱梯度洗脱分离,采用电喷雾离子源与正离子多反应监测(MRM)模式采集三重四极杆质谱数据,对替考拉宁中4种黄曲霉毒素同时进行检测。4种黄曲霉毒素在4.000 0~80.000 0 ng/L质量浓度范围内具有良好的线性关系,相关系数r>0.999 9;检测限为0.06μg/kg,定量限为0.20μg/kg;回收率为85.3%~95.0%,RSD为3.3%~3.6%。对3批替考拉宁样品中的黄曲霉毒素进行检测,均未检到黄曲霉毒素AFB1、AFB2、AFG1、AFG2。本方法操作简捷,灵敏度高,准确性好,适合于替考拉宁中黄曲霉毒素的定量测定。