黄芪、红芪中无机元素含量差异比较

Comparison of difference of inorganic elements content between Radix astragali and Radix hedysari

中文关键词:  黄芪  红芪  无机元素  电感耦合等离子体质谱法  向量夹角法  特征元素  相关性分析

英文关键词:Radix astragali  Radix hedysari  inorganic elements  inductively coupled plasma mass spectrometry  vectorial angle method  characteristic element  correlation analysis

中文摘要:

      目的 比较甘肃产药食同源物质黄芪、红芪中无机元素含量差异。方法 使用电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry, ICP-MS)分别测定黄芪、红芪中19种无机元素的含量, 采用非参数检验分析两者中无机元素含量差异, 采用向量夹角法比较元素含量相似度, 采用主成分分析及相关性分析法确定黄芪、红芪的特征无机元素及元素间的协同或拮抗关系。结果 黄芪、红芪中无机元素含量有显著差异(除Zn外)(P<0.01), 且黄芪中的元素总含量及大部分元素(除Zn、Cr、Mo外)含量低于红芪, 其中Ca、Mg、Al、Sr、Zn、Mn的含量都较高; 向量夹角法的评价结果显示, 黄芪、红芪中元素平均值相似度为0.946, 中位值相似度为0.919; 黄芪的特征无机元素有Li、Al、Ba、Ca、Mg、B、Be、Pb, 红芪的特征元素为As、Cr、Co、Li、Be、Al、Mo; 黄芪和红芪大多数元素至少与其他8种元素存在协同吸收。结论 黄芪和红芪无机元素含量差异明显, Ba、Ca、Mg、B、Pb或As、Cr、Co、Mo元素可以作为区分黄芪和红芪的指标。

英文摘要:

      Objective To compare the difference of inorganic elements content in Radix astragali and Radix hedysari in Gansu Province. Methods Inductively coupled plasma mass spectrometry (ICP-MS) was used to simultaneously determine the content of 19 kinds of inorganic elements in Radix astragali and Radix hedysari. The statistical differences of the inorganic elements were identified by nonparametric test. The similarity of element content was compared by the vector angle method, and the characteristic inorganic elements of Radix astragali and Radix hedysari as well as the synergistic or antagonistic relationships among elements were determined by principal component analysis and correlation analysis. Results The content of inorganic elements in Radix astragali and Radix hedysari had significant difference (except Zn) (P<0.01). The total content and most of inorganic elements (except Zn、Cr、Mo) in Radix astragali were less than that in Radix hedysari, both of them had high content of Ca, Mg, Al, Sr, Zn and Mn, vector angle method suggested that the average and median of inorganic elements similarity was 0.946 and 0.919. The principal component analysis showed that Li, Al, Ba, Ca, Mg, B, Be and Pb were the characteristic of Radix astragali, and As, Cr, Co, Li, Be, Al and Mo were the characteristic of Radix hedysari. Most of elements had positive correlations with at least other 8 kinds of inorganic elements, which meant synergistic promotion. Conclusion Inorganic element content of Radix astragali and Radix hedysari have significant difference, the elements of Ba, Ca, Mg, B and Pb or As, Cr, Co and Mo can be used as reference indicators for discriminate Radix astragali and Radix hedysari.