基于矿质元素的绞股蓝产地鉴别研究

Study on identification method of Gynostemma origin by mineral elements

为了鉴别绞股蓝产地的来源,采用火焰原子吸收光谱法测定了8个产地绞股蓝中K,Ca,Na,Mg,Fe,Zn,Cu,Mn等矿质元素的含量,运用化学计量学方法对测定结果进行分析。结果表明运用主成分分析及聚类分析方法的聚类结果比较理想,8个产地能够各自聚为一类。采用判别分析方法的总判别正确率为98.96%。矿质元素结合化学计量学方法为鉴别绞股蓝产地提供一种快速、准确的方法。

In order to rapid discriminate the source of Gynostemma origin, Gynostemma from eight different areas were collected,the content of K, Ca, Na, Mg, Fe, Zn, Cu and Mn were analyzed with flame atomic absorption spectrometry,and the data was analyzed with Chemometrics method.The results showed that Gynostemma from eight different areas were well clustering by principal component analysis and cluster analysis method.The Gynostemma from eight different areas were belong to each category.The total accuracy was 98.96% with discriminant analysis method.In conclusion,mineral element combined with chemometrics method was a fast and accurate method to identify the origin soure of Gynostemma.