UPLC同时测定墨旱莲药材中8种成分的含量

发布时间:2019-08-29 来源: 感恩亲情 点击:

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  [摘要]建立一种超高效液相色谱法同时测定墨旱莲中的异槲皮苷、木犀草苷、异去甲蟛蜞菊内酯、异绿原酸A、异绿原酸C、木犀草素、蟛蜞菊内酯、芹菜素8种成分含量的方法。采用Waters Acquity UPLC BEH C18色谱柱(2.1 mm ×100 mm,1.7 μm),流动相A为乙腈,B为0.1%的甲酸水,梯度洗脱条件:0~4 min,10%~13% A;4~10 min,13%~16% A;10~13 min,16%~25% A;13~17 min,25%~28% A;17~20 min,28%~40% A;20~25 min,40%~95% A。流速:0.3 mL·min-1;柱温35 ℃;检测波长350 nm。研究结果表明各指标成分之间分离度良好,在选定的浓度范围内线性关系良好(r≥0.999 0),平均加样回收率(n=6)在96.60%~103.4%,RSD为0.86%~2.4%。所建立的UPLC同时测定墨旱蓮药材中8种指标成分的含量的方法回收率较好,重复性、稳定性良好,为墨旱莲的鉴别及质量评价提供了科学依据。
  [关键词]墨旱莲; 超高液相色谱法; 多指标成分; 含量测定
  [Abstract]To establish an UPLC method for the simultaneous determination of 8 compounds in Eclipta Herba, such as isoquercitrin, luteoloside, demethylwedelolactone, isochlorogenic acid A, isochlorogenic acid C, luteolin, wedelolactone and apigenin. The experiment was performed with a Waters Acquity UPLC BEH C18 (2.1 mm×100 mm, 1.7 μm) column by gradient elution of 0.1% formic acid in water and acetonitrile: 0-4 min,10%-13% A; 4-10 min, 13%-16% A; 10-13 min, 16%-25% A; 13-17 min, 25%-28% A; 17-20 min,28%-40% A;20-25 min,40%-95% A. The flow rate was 0.3 mL·min-1 .The condition of was the colum temperature was maintained at 35 ℃ and the detected wavelength was set at 350 mm. 8 components were separated clearly by this method. Also a good linearity was obtained between the chosen concentration(r≥0.999 0). The measured data showed that the recovery rate range from 96.60%-103.4% (n=6) and their RSD values were 0.86%-2.4%. The method has high recovery rate, good reproducibility and stability. It provides a scientific basis for the identification and quality evaluation of Eclipta Herba.
  [Key words]Eclipta Herba; UPLC; multi-component quantification; content determination
  doi:10.4268/cjcmm20162116
  墨旱莲为菊科植物鳢肠Eclipta prostrate L.干燥地上部分[1],广泛分布于河南、安徽、江苏、江西、浙江、福建、广东、广西、湖南、湖北等地[2]。其始载于《新修本草》,有滋阴益肾凉血止血之功效。现代药理研究证明,墨旱莲具有保肝益肾[3-4]、调节免疫[5-6]、抗氧化[7-8]、抗菌抗炎[9]、抗疟疾[10]及抗肿瘤[11-12]等作用,其主要化学成分主要有香豆草醚类、黄酮类、酚酸类等[13]。目前《中国药典》2015年版对墨旱莲药材的质量评价依赖于蟛蜞菊内酯单一化学成分的含量测定[1]。然而传统中药的疗效是多成分共同作用的结果,单一活性成分并不能代表药材整体的质量。近年来多指标评价墨旱莲的活性成分的报道较少,且多为2种成分同时定量[14-15],运用方法多为HPLC,大多集中在某一类别化学成分的评价[16-18]。然而HPLC耗时长,其灵敏度较低,面对传统中药中低含量成分的检测问题时常常束手无策。
  UPLC具有耐高压、快速分离、高灵敏度、高分离度等特点,能克服HPLC灵敏度低,分析时间长等缺点,在中药等复杂体系的分离分析上具有明显优势[18],被广泛地应用于中药复杂体系的研究[19-20]。本实验首次建立了UPLC同时测定墨旱莲药材中8种活性成分含量的测定方法,该方法经试验认证安全可靠简便易行,重现性好,溶剂消耗少,为建立墨旱莲药材的质量控制与评价标准提供借鉴。

相关热词搜索:墨旱莲 测定 药材 含量 成分

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