HPLC—ELSD法测定不同储存时间党参药材中果糖、葡萄糖和蔗糖的含量

发布时间:2019-08-29 来源: 人生感悟 点击:

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  [摘要] 目的 建立党参药材中果糖、葡萄糖和蔗糖高效液相色谱-蒸发光散射检测法(HPLC-ELSD)含量测定的方法,并测定不同储存时间的党参果糖、葡萄糖和蔗糖的含量。方法 采用80%甲醇超声提取,通过HPLC-ELSD法测定不同储存时间的党参中果糖、葡萄糖和蔗糖的含量。色谱条件:Shodex Asahipak NH2P-50 4E(250 mm × 4.6 mm,5 μm)色谱柱,以乙腈-水(77∶23)为流动相,柱温25 ℃,流速1.0 mL/min,ELSD检测器。结果 通过实验,不同储存时间的党参中果糖、葡萄糖和蔗糖均能很好分离,线性范围和相关系数分别为2.409~24.09 μg(r = 0.9999)、1.456~14.56 μg(r = 0.9995)、1.15~11.50 μg(r = 0.9999),平均回收率分别为103.73%(RSD = 0.26%)、97.85%(RSD = 1.98%)、99.08%(RSD = 1.09%)。结论 表明该方法简便,稳定性、重复性、分离度好,可用于党参中果糖、葡萄糖和蔗糖含量分析,储存0、3、6、12个月的不同时间党参中果糖、葡萄糖和蔗糖含量差异明显。
  [关键词] 党参;果糖;葡萄糖;蔗糖;HPLC-ELSD;含量测定
  [中图分类号] R931.4 [文献标识码] A [文章编号] 1673-7210(2017)04(c)-0138-04
  [Abstract] Objective To establish a HPLC-ELSD determination method of fructose, glucose and sucrose in Codonopsis pilosula, and to determine the content of fructose, glucose and sucrose of Codonopsis pilosula in different storage times. Methods The sample solutions made by ultrasonic extraction of 80% methanol solution were used to determine the contents of fructose, glucose and sucrose of Codonopsis pilosula in different storage times by HPLC-ELSD. The analysis was performed on a Shodex Asahipak NH2P-50 4E column (250 mm × 4.6 mm, 5 μm) with a gradient elution of acetonitrile-water (77∶23) at the flow rate of 1.0 mL/min. The column temperature was 25℃. It was determined by ELSD detector. Results The methodological studies showed that fructose, glucose and sucrose of Codonopsis pilosula in different storage times were in good linearity from 2.409 to 24.09 μg (r = 0.9999), 1.456 to 14.56 μg(r = 0.9995), 1.15 to 11.50 μg (r = 0.9999) respectively. The average recoveries of the three components were 103.73% (RSD = 0.26%), 97.85% (RSD = 1.98%) and 99.08% (RSD = 1.09%), respectively. Conclusion The results show that the method is convenient, stable, reproducible and well separated. It can be used to determine fructose, glucose and sucrose in Codonopsis pilosula. The content of fructose, glucose and sucrose in Codonopsis pilosula of different storage times(0, 3, 6, 12 months) are different obviously.
  [Key words] Codonopsis Radix; Fructose; Glucose; Sucrose; HPLC-ELSD; Assay
  黨参来源于桔梗科植物党参Codonopsis Pilosula (Franch.)Nannf.、素花党参Codonopsis pilosula Nannf. var. modesta(Nannf.)L. T. Shen 或川党参Codonopsis tangshen Oliv. 的干燥根[1]。党参根据产地分为西党参、东党参和潞党参等[2]。党参所含主要化学成分有苷类、糖类、甾醇、胆碱、生物碱、木质素、三萜等[3-9]。文献报道[10-16],党参糖类成分为党参具有滋补功效的有效成分之一,具有调节血液系统、抗癌、抗炎、抗病毒、抗衰老、抗细胞毒性等免疫增强的功效。由于党参药材中果糖、葡萄糖、蔗糖含量很高,在储存过程中容易发生糖的转化与降解以及容易发生霉变等过程中造成糖的损失。有文献报道了党参不同储存时间的质量考察研究,但该研究只考察了气味、颜色、霉变等指标,没有考察指标性成分和糖类成分的含量变化[17]。《中国药典》2015年版党参项下未建立含量测定项,也未见有文献报道同时测定党参药材中果糖、葡萄糖、蔗糖的含量。本文首次建立了HPLC-ELSD法测定果糖、葡萄糖、蔗糖含量的一针同时测定3个指标成分的方法,可用于党参药材的质量评价,研究的不同储存时间党参中果糖、葡萄糖、蔗糖含量差异明显,为党参药材的储存期提数据支持。

相关热词搜索:蔗糖 党参 果糖 葡萄糖 药材

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