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1.
The chemical characteristics for different parts of Panax notoginseng, including root, fibre root, rhizome, stem, leaf, flower and seed, were determined using high performance liquid chromatography-evaporative light scattering detection (HPLC-ELSD) and pressurized liquid extraction (PLE). Eight major saponins, namely notoginsenoside R1, ginsenosides Rg1, Re, Rb1, Rc, Rb2, Rb3 and Rd were also quantitatively compared among the different parts of P. notoginseng. The chromatograms showed that there was significant difference between underground (root, fibre root, rhizome) and aerial (leaf and flower) parts from P. notoginseng, though the similarities of entire chromatographic patterns among tested samples from underground (0.965 ± 0.029, n = 12) and aerial parts (0.987 ± 0.014, n = 5) were similar, respectively. Especially, no saponin was detected in the seed of P. notoginseng. Hierarchical clustering analysis based on eight investigated saponins or the ratios of contents for ginsenoside Rg1/Rb1 and ginsenoside Rb3/Rb1 showed that the samples from different parts of P. notoginseng were divided into three main clusters. One cluster was underground parts, which contained rich protopanaxatriol and protopanaxadiol types saponins. The leaf and flower were in the same cluster, which contained protopanaxadiol type saponins only. Especially, ginsenoside Rc, Rb2 and Rb3, rare in the underground parts, were rich in aerial parts of P. notoginseng. The stem of P. notoginseng was another cluster. Based on the cluster analysis, the chemical characteristics for different parts of P. notoginseng were revealed. They are composite cluster (underground parts), protopanaxadiol cluster (aerial parts) and interim (stem) cluster, which was the one between the two typical clusters, respectively. The result shows that chemical characteristics of underground parts and aerial parts from P. notoginseng are obviously different, which is helpful for pharmacological evaluation and quality control of P. notoginseng.  相似文献   

2.
A rapid ultra performance liquid chromatography coupled with photo diode array detection method (UPLC-PDA) was developed for the simultaneous determination of 11 saponins, namely notoginsenoside R1, ginsenoside Rg1, Re, Rf, Rb1, Rg2, Rc, Rb2, Rb3, Rd and Rg3 in Panax notoginseng. The analysis was performed on Acquity UPLC system with Acquity UPLC BEH C(18) column and gradient elution of water and acetonitrile in 12 min. The high correlation coefficient (r(2)>0.9968) values indicated good correlations between the investigated compounds' concentrations and their peak areas within the test ranges. The LOQ and LOD were lower to 0.2-2.4 and 0.1-1.8 ng on column, respectively. The overall intra- and inter-day variations (R.S.D.) of 11 saponins were lower than 3.1%. The developed method was successfully used for the analysis of saponins in P. notoginseng with overall recovery of 93.0-101.6% for the analytes. The results show that UPLC is a powerful tool for analysis of components in Chinese medicines.  相似文献   

3.
目的 选用闪式提取法对三七果进行提取工艺的考察,并通过采用高效液相色谱法对三七果所含的主要单体皂苷进行测定,优选出最佳提取方式。方法 采用闪式提取法提取三七果中的总皂苷,制备出9个供试品;以人参皂苷Rb1为对照品,应用HPLC-UV法测定各个供试品中的单体皂苷。色谱柱条件:Hypersil C18柱(200 mm×4.6 mm,5 μm),流动相为乙腈-水梯度洗脱(0 min,20∶80→30 min,45∶55→48 min,70∶30→50 min,80∶20→60 min,100∶0);检测波长203 nm;体积流量1.0 mL/min。结果 闪式提取可得到较高收率的总皂苷,且单体皂苷人参皂苷Rb1的量较高。结论 闪式提取法速度快,效率高,耗材少,适用于三七果总皂苷的提取和制备。  相似文献   

4.
目的采用高效液相色谱-蒸发光散射检测方法(HPLC-ELSD)建立同时测定知母药材中新芒果苷、芒果苷、知母皂苷BⅡ、宝藿苷Ⅰ及知母皂苷AⅢ的含量测定方法。方法采用Agilent poroshell 120 EC-C18柱,流动相采用乙腈-0.2%醋酸水系统,梯度洗脱;柱温为30℃,流速为0.7 ml/min;蒸发光散射检测器以氮气为雾化气,雾化气温度为40℃,漂移管温度为90℃,氮气体积流量为2.0 L/min;进样量为20μl。结果 5种成分均能达到基线分离,新芒果苷24.1~386μg/ml(r=0.999 3)、芒果苷23.2~371μg/ml(r=0.998 6)、知母皂苷BⅡ54.2~867.2μg/ml(r=0.995 6)、宝藿苷Ⅰ5.3~84.8μg/ml(r=0.996 8)、知母皂苷AⅢ10~160μg/ml(r=0.998 9)的浓度范围内呈现良好的线性关系。5种成分的平均加样回收率在101.8%~105.0%之间,重复性RSD小于2.4%,知母药材中上述5种成分含量分别为1.62%、0.82%、7.36%、0.07%、0.34%。结论该方法...  相似文献   

5.
三七茎叶是五加科人参属三七[Panax notoginseng(Burk.)F.H.Chen]的干燥茎叶,是三七的副产物.现代研究表明,三七茎叶中含有多种活性成分和营养物质,如:皂苷类、黄酮类、维生素、氨基酸等;药理作用多样,具有抗焦虑,抗抑郁,抗骨质疏松,抗糖尿病,抗癌,保肝,抗衰老、预防肥胖等.目前,对三七茎叶化学...  相似文献   

6.
中药三七高效液相色谱特征研究   总被引:5,自引:0,他引:5  
万建波  李绍平  王一涛 《药学学报》2006,41(11):1090-1093
目的建立中药三七的高效液相色谱特征谱。方法运用加压溶剂提取、HPLC-DAD分析28个不同产地的三七药材,所得的图谱采用中国药典委员会开发的“中药色谱指纹图谱相似度评价系统(Version 2004A)”软件进行分析。结果28个三七样品色谱图中各色谱峰分离良好,从中确定了13个特征峰,其中8个主要色谱峰经对照品确认,所有药材色谱图与软件生成的对照谱相似度为0.982±0.008(RSD=0.78%)。结论该方法简便、重现性好、具可操作性,可科学评价及有效控制三七药材质量。  相似文献   

7.
目的 利用近红外光谱技术(near infrared spectroscopy,NIRS)建立三七药材水分和醇溶性浸出物定量分析的快速测定方法。方法 参照《中国药典》2015年版三七水分和醇溶性浸出物含量测定方法对53批药材分别测定水分和醇溶性浸出物含量,采用偏最小二乘法(PLS)分别建立水分和醇溶性浸出物的近红外定量分析模型,并利用内部交叉验证和外部验证的方法对模型进行优化。结果 药材样品中水分和醇溶性浸出物预测最佳波段分别为4 450.32~7 350.01 cm-1和6 163.92~3 984.71 cm-1。定量模型校正集相关系数分别为0.997 2和0.962 4,校正均方差分别为0.039 6和0.776 0;验证集的相关系数为0.962 4和0.988 4,验证均方差分别为0.173和0.595。结论 该方法准确、快速、无污染,可用于三七药材中水分和醇溶性浸出物含量的快速测定。  相似文献   

8.
目的 通过网络药理学研究三七的主要活性成分、作用靶点、相关信号通路和疾病等几方面的关联性,揭示其发挥药效的作用机制。方法 从中药系统药理学分析平台(TCMSP)数据库中获得三七的化学成分,并把口服生物利用度(OB)≥ 30%和类药性(DL)≥ 0.15作为筛选条件,获得三七的主要活性成分和相关作用靶点。通过UniProt数据库提取作用靶点的基因名称,并用CTD网络在线分析平台获得与靶点相关的疾病和信号通路。最后用Cytoscape 3.6.1构建"活性成分-靶点""靶点-信号通路"和"靶点-疾病"网络图,采用Cytoscape 3.6.1的Network Analyzer插件分析网络图,探讨三七的多重药理作用机制。结果 共获得槲皮素、β-谷甾醇、豆甾醇、人参皂苷rh2等9个主要活性成分;这些成分可作用于176个靶点,其主要靶点有PTGS2、PTGS1、HSP90AB1、ER、PDE3A等,这些靶点与肿瘤、高血压、中枢神经系统障碍、自身免疫疾病等45种疾病相关,涵盖癌症、心血管系统、神经系统、免疫系统等几大类疾病。三七的主要活性成分通过作用于靶点而影响相关的信号通路发挥治疗疾病的作用,其影响的信号通路主要包括信号转导通路、免疫通路、Cytokine信号通路、癌症通路等,其中肿瘤、免疫相关的占绝大部分。结论 三七是通过多成分、多靶点、多信号通路的协调作用发挥治疗疾病的作用,其中在治疗肿瘤疾病和增强人体免疫力方面具有潜在的优势。  相似文献   

9.
目的 基于网络药理学预测三七治疗幽门螺杆菌(Hp)相关疾病机制,研究三七中有效活性成分人参皂苷Rb3对Hp造成的胃上皮细胞损伤的保护作用及机制。方法 使用Herb数据库收集“三七”的相关预测靶点,使用Gene Cards数据库收集Hp相关疾病的靶点;使用Draw Venn Diagram网站绘制Venn图,得到靶点交集;进行蛋白互作(PPI)网络分析、基因本体(GO)和京都基因与基因组百科全书(KEGG)富集分析。将GES-1细胞分为对照组、模型组及人参皂苷Rb3低、中和高浓度(1、5、10 μ mol· L-1)组,人参皂苷Rb3组使用相应浓度的人参皂苷Rb3预处理,培养过夜12 h至融合度为70%~80%。Hp悉尼株1 (SS1)按感染复数(MOI) 100加入细胞中制备损伤模型,人参皂苷Rb3继续给药,共培养48 h。对照组不加SS1,对照组和模型组不加药。改良吉姆萨染色后通过光学显微镜观察细胞形态;结合Hoechst 33342荧光染色和Annexin V/PI双染流式细胞术检测细胞凋亡;试剂盒法检测活性氧(ROS)水平;采用实时荧光定量PCR(qRT-PCR)检测凋亡相关基因TP53、Bax、Bcl-2表达量;Western blotting法检测P53、p-Akt、cleaved/pro-Caspase 9、Bcl-2、Bax、cleaved/pro-Caspase 3的蛋白表达情况。结果 网络药理学结果表明三七治疗Hp相关疾病的靶点共16个,其PPI网络分析得到按度值大小排名前6位靶点为TP53、CASP3、PTGS2、IL6、TNF、IL1β。GO富集分析与KEGG富集分析结果均显示与凋亡相关。与模型组比较,经人参皂苷Rb3处理后,GES-1细胞的细胞核染色质致密深染,破裂的细胞逐渐减少;Hoechst 33342荧光染色细胞核强荧光数目明显减少;细胞凋亡率显著降低(P<0.05);ROS水平显著降低(P<0.05);TP53与Bax的mRNA水平显著降低,Bcl-2 mRNA水平显著升高(P<0.05); p-Akt、Bcl-2蛋白表达显著升高(P<0.05),P53、Bax、cleaved/pro-Caspase 9与cleaved/pro-Caspase 3蛋白表达显著降低(P<0.05)。结论 三七可能通过包括炎症及凋亡在内的多种途径治疗Hp相关疾病,人参皂苷Rb3对Hp诱导的胃上皮细胞凋亡发挥显著改善作用,其可能机制是降低氧化应激水平,并调节Akt的磷酸化和P53的表达。  相似文献   

10.
杜芹芹  杨成 《药学研究》2023,42(8):567-573
目的 研究三七炮制前后挥发性成分的变化,从挥发性成分角度阐释生、熟三七的物质基础。方法 利用顶空-气相色谱质谱联用技术对生、熟三七中挥发性成分进行比较分析。以He为载气,采用DB-FFAP (30 m×0.25 mm,0.25 μm) 极性色谱柱分离,EI离子源电离,结合NIST 11.L质谱库对化合物进行鉴定。结果 生、熟三七中分别鉴定出103和126种挥发性成分,其中相对含量最高的是萜烯类物质,分别占总挥发性成分的51.75%和50.16%。从三七中新检测出乙醛等15种小分子化合物。熟三七中检测到17种特有的挥发性成分。结论 本研究较为全面地分析了生、熟三七中挥发性成分的主要异同,从挥发性成分角度阐释三七“生消熟补”的药用机制,为三七炮制规范及质量控制提供重要的数据支持。  相似文献   

11.
目的 采用实时荧光定量PCR (qRT-PCR)法和Illumina高通量测序技术研究杠柳毒苷和不同比例三七总皂苷配伍对大鼠肠道菌群的影响。方法 将15只SD大鼠随机分为杠柳毒苷单独给药组(A组)、杠柳毒苷和低剂量三七总皂苷配伍组(B组)、杠柳毒苷和高剂量三七总皂苷配伍组(C组),每组5只。按杠柳毒苷10 mg/kg、三七总皂苷0.74和2.22 g/kg (分别相当于香加皮与三七的配伍比例为1:1和1:3)的剂量ig给药,连续给药7 d。给药结束后收集大鼠粪便,进行qRT-PCR反应和高通量测序。结果 qRT-PCR结果表明,与杠柳毒苷单独给药组比较,杠柳毒苷和三七总皂苷配伍后,总菌、拟杆菌的相对含量显著升高(P<0.05、0.01),而乳酸杆菌的相对含量呈现降低的趋势;Illumina高通量测序结果显示,在微生物群落结构上,杠柳毒苷配伍三七总皂苷后,拟杆菌的相对丰度明显升高而乳酸杆菌的相对丰度呈现降低的趋势;在肠道菌群多样性上,3组样品的多样性指数间无显著性差异。结论 杠柳毒苷和不同比例的三七总皂苷配伍后,可对大鼠肠道中的总菌、乳酸杆菌及拟杆菌产生一定影响,但对肠道菌群多样性的影响不明显。  相似文献   

12.
目的 考察三七总皂苷(PNS)的体内外抗肺纤维化作用,并探讨其作用机制。方法 将60只Wistar大鼠随机分为假手术组、模型组、吡非尼酮(阳性药,50 mg·kg-1)组和PNS低、中、高剂量(50、100、200 mg·kg-1)组,采用气管内注入博来霉素(5 mg·kg-1)建立肺纤维化大鼠模型,假手术组注入生理盐水;造模24 h后给药,持续28 d;检测大鼠肺脏系数,利用BUXCO系统检测大鼠气道阻力与肺顺应性变化,HE染色后观察大鼠肺组织病理结构损伤,免疫荧光法检测大鼠肺组织E-钙黏蛋白(E-cad)、N-钙黏蛋白(N-cad)表达,免疫组化法检测大鼠肺组织蛋白酶激活受体-1(PAR-1)蛋白表达;体外培养人胚肺成纤维细胞MRC-5,设对照组、模型组(凝血酶2 U·mL-1建立体外肺纤维化模型)和PNS 5、10、20 μg·mL-1组,体外划痕实验检测细胞迁移率,实时荧光定量PCR(qRT-PCR)、Western blotting实验检测α-平滑肌肌动蛋白(α-SMA)、波形蛋白(Vim)和PAR-1基因和蛋白表达水平;随后使用PAR-1 si RNA抑制PAR-1表达后,进一步采用qRT-PCR和Western blotting检测α-SMA与Vim基因与蛋白表达。结果 体内实验中,与模型组相比,PNS各剂量组肺脏系数显著降低(P<0.001)、肺顺应性显著升高(P<0.05、0.01、0.001),100、200 mg·kg-1 PNS组大鼠气道阻力显著降低(P<0.05、0.01),同时PNS能够改善大鼠肺组织的病理结构损伤,在下调N-cad的蛋白表达同时上调E-cad的蛋白表达,且100、200 mg·kg-1 PNS组PAR-1蛋白表达显著下调(P<0.01、0.001)。体外实验中,与模型组相比,10、20 μg·mL-1 PNS组细胞的迁移率显著降低(P<0.01、0.001),20 μg·mL-1 PNS组α-SMAVim mRNA水平下调(P<0.05、0.01),20 μg·mL-1 PNS组α-SMA蛋白表达水平显著下调(P<0.05) ,10、20 μg·mL-1 PNS组Vim蛋白表达水平显著下调(P<0.05、0.01),PAR-1 siRNA组α-SMA mRNA水平和α-SMA、Vim蛋白表达水平显著降低(P<0.05、0.01、0.001)。结论 PNS具有抗肺纤维化的作用,其机制可能与调控PAR-1的异常有关。  相似文献   

13.
Herba Epimedii (family Berberidaceae), Yinyanghuo in Chinese, is one of commonly used Chinese medicines. Flavonoids are considered as its active components. In this study, a rapid ultra-performance liquid chromatography (UPLC) method was developed for simultaneous determination of 15 flavonoids, including hexandraside E, kaempferol-3-O-rhamnoside, hexandraside F, epimedin A, epimedin B, epimedin C, icariin, epimedoside C, baohuoside II, caohuoside C, baohuoside VII, sagittatoside A, sagittatoside B, 2'-O-rhamnosyl icariside II and baohuoside I in different species of Epimedium. The analysis was performed on Waters Acquity UPLC system with an Acquity UPLC BEH C18 column (50 mm x 2.1mm I.D., 1.7 microm) and gradient elution of 50mM acetic acid aqueous solution and acetonitrile within 12 min. All calibration curves showed good linearity (R2>0.9997) within test ranges. The LOD and LOQ were lower than 0.13 and 0.52 ng on column, respectively. The R.S.D.s for intra- and inter-day of 15 analytes were less than 5.0% at three levels, and the recoveries were 95.0-103.7%. The validated method was successfully applied to quantitatively analyze 15 flavonoids in different species of Epimedium. The results showed there were great variations among the contents of investigated flavonoids. Hierarchical clustering analysis based on characteristics of 15 investigated compounds peaks in UPLC profiles showed that 37 samples were divided into 3 main clusters, which were in accordance with their flavonoids contents. The simulative mean chromatogram of the high content cluster was generated to compare the samples from different species and/or locations of Epimedium. Four flavonoids including epimedin A, B, C and icariin were selected as markers for quality control of the species of Epimedium used as Yinyanghuo.  相似文献   

14.
陈泠  李春艳  王政  贾敏  韩婷 《药学实践杂志》2016,34(4):313-317,353
目的采用HPLC法测定不同人参样品中9种人参皂苷(Rc、Rb1、Rb2、Re、Rd、Rg1、Rg2、Rg3和Rh2)的含量。方法色谱条件:Zorbax SB C18柱(4.6mm×250mm,5μm),保护柱Extend-C18柱(4.6mm×12.5mm,5μm);以乙腈-水为流动相,梯度洗脱;流速:1.0ml/min;检测波长:203nm;柱温:35℃。结果 9种人参皂苷Rg1、Rb1、Re、Rc、Rg2、Rh2、Rg3、Rb2和Rd在120min内基线分离。方法学表明其线性关系良好,精密度、稳定性和重复性RSD均小于2.0%,加样回收率在98.3%~102%之间。测得人参叶和人参须根中的总皂苷含量最高,分别为48.9、23.6mg/g;人参毛状根中的总皂苷与人参主根和人参果的总皂苷含量差别不大,为7.47mg/g。结论该法准确性高,操作简便、快速,重复性好,精密度高,可用于不同人参样品中9种人参皂苷的含量测定。  相似文献   

15.
目的 建立测定不同产地西洋参药材及其产品中10 种皂苷成分含量的方法,比较不同来源西洋参中总皂苷及单体皂苷的含量差异,评价品质优劣。方法 采用高效液相色谱法,色谱条件为Thermo Scientific Syncronis C18 色谱柱(100 mm×2.1mm,1.7 μm),流动相为乙腈-水,二元梯度洗脱,体积流量为0.2 mL/min,检测波长为203 nm,柱温为35 ℃。结果 人参皂苷Rg1、Re、Rb1、Rc、Rb2、Rd、F1、R0、F2、Rk1 分别在线性范围内存在良好的线性关系,48 h 内稳定性试验RSD 值均小于5%,平均加样回收率为96%~102%,RSD 值均< 2.21%。结论 该方法准确、快速、灵敏,重复性好,可用于西洋参药材、饮片及相关产品中皂苷的定量分析。不同来源西洋参及其产品中皂苷成分的种类相似,但单体皂苷的含量差异显著,所测样品均不含有人参皂苷Rf,排除掺假。  相似文献   

16.
西洋参胶囊对小鼠骨髓细胞染色体和微核的影响   总被引:1,自引:0,他引:1  
目的通过小鼠骨髓细胞染色体畸变和微核实验,探讨昂立西洋参胶囊对小鼠骨髓细胞的遗传毒性。方法以0.9,1.8,3.6 g.kg 1剂量的昂立西洋参胶囊给小鼠灌胃,取小鼠股骨骨髓制备骨髓细胞标本,分别观察并计算各组小鼠的染色体畸变率和微核率。结果各剂量组小鼠骨髓细胞染色体畸变率和微核率与空白对照组比较均无显著性差异(P>0.05),而阳性对照组环磷酰胺与空白对照组比较有显著性差异(P<0.01)。结论昂立西洋参胶囊各剂量组对小鼠骨髓细胞染色体和微核均无影响。  相似文献   

17.
HPLC-ELSD测定心可舒胶囊中三七皂苷R1、人参皂苷Rg1的含量   总被引:1,自引:0,他引:1  
目的 建立心可舒胶囊中三七皂苷R1、人参皂苷Rg1的含量测定方法。 方法 以COSMOSIL 5C18-PAQ Packed Column(250 mm×4.6 mm, 5 mm)为色谱柱,以乙腈-水(27∶73)为流动相,流速为1 mL·min-1,ELSD为检测器,漂移管温度:41 ℃;雾化器(氮气)压力:350 kPa。 结果 三七皂苷R1、人参皂苷Rg1的线性范围分别为0.123 2~6.16,0.327 2~16.36 μg,r值分别为0.999 9,0.999 7;回收率分别为98.7%,99.2%,RSD分别为2.72%,1.54%。 结论 该方法简便,准确,灵敏度高,重复性好,可作为心可舒胶囊的含量测定方法。  相似文献   

18.
The metabolic profiles of Panax notoginseng and its associated therapeutic values are critically affected by the duration of steaming. The time-dependent steaming effect of P. notoginseng is not well-characterized and there is also no official guideline on its duration of steaming. In this paper, a UHPLC/TOFMS-based metabolomic platform was developed for the qualitative profiling of multiparametric metabolic changes of raw P. notoginseng during the steaming process. Our method was successful in discriminating the differentially processed herbs. Both the unsupervised principal component analysis (PCA) score plot (R2X = 0.664, Q2 (cum) = 0.622, and PCs = 2) and the supervised partial least square-data analysis (PLS-DA) model (R2X = 0.708, R2Y = 0.461, and Q2Y = 0.271) demonstrated strong classification and clear trajectory patterns with regard to the duration of steaming. The PLS-DA model was validated for its robustness via a prediction set, confirming that the UHPLC/TOFMS metabolic profiles of the raw and differentially steamed P. notoginseng samples were highly reproducible. Based on our method, the minimum durations of steaming for the maximum production of bioactive ginsenosides such as Rg3 and Rh2 were also predicted. Our novel time-dependent metabolic profiling approach represents the paradigm shift in the quality control of P. notoginseng products.  相似文献   

19.
三七有效成分提取工艺的比较研究   总被引:2,自引:0,他引:2  
目的:研究三七有效成分的最佳提取工艺。方法:采用水煎煮法、乙醇回流法、超声提取法提取,用超滤法和大孔吸附树脂进行分离,以不同提取方法得到提取物中三七总皂苷、人参皂苷Rb1、Rg1的含量为考察指标。结果:最佳提取工艺为:75%的乙醇超声提取3次,每次2h。结论:经优选得到最佳提取工艺,有效成分含量高,工艺简便。  相似文献   

20.
A new multiple columns HPLC method for simultaneous determination of 16 characteristic components, 5 nucleobases and nucleosides (uracil, cytidine, uridine, guanosine and adenosine), and 11 saponins (notoginsenoside R1, ginsenoside Rg1, ginsenoside Re, notoginsenoside R4, notoginsenoside Fa, ginsenoside Rb1, notoginsenoside R2, ginsenoside Rg2, ginsenoside Rh1, ginsenoside Rd and notoginsenoside K), in the root of Panax notoginseng, a valued traditional Chinese medicinal herb, were developed. Notoginsenoside R4, Fa and K were first quantitatively determined in P. notoginseng. The 5 nucleobases and nucleosides compounds were separated on a Zorbax SB-Aq column (150 × 4.6 mm, 5.0 μm) and 11 saponins were analyzed using a Zorbax Bonus-RP column (150 × 4.6 mm, 5.0 μm) with column switching. The column temperature was set at 30 °C. Mobile phase was composed of 5 mM ammonium acetate aqueous (A), water (B) and acetonitrile (C) using a gradient elution. The flow rate was 1.5 mL/min and detection wavelengths were set at 260 nm for nucleobases and nucleosides, and 203 nm for saponins. The developed method had good repeatability and sensitivity for quantification of 16 analytes with overall precision (including intra- and inter-day) less than 3% (RSD), and LOD and LOQ were less than 1.33 μg/mL and 5.12 μg/mL, respectively. The method was successfully applied to the simultaneous determination of 16 analytes in 15 samples of P. notoginseng collected from different places of China, which indicated that multiple columns HPLC can be used for comprehensive quality control of P. notoginseng.  相似文献   

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