维药香青兰中挥发油成分的GC-MS分析

GC-MS Analysis of Volatile Oil Components from Dracocephalum moldavica L.

目的:用气相色谱-质谱联用(GC-MS)法对香青兰的挥发油成分进行分析。方法:按《中国药典》要求用水蒸气蒸馏法得到香青兰的挥发油,用GC-MS法分离并分析其化学成分,采用气相色谱峰面积归一化法定量。结果:鉴定出51种成分,其中柠檬醛(顺式及反式)含量较高,占总挥发性成分的相对含量为31.43%,其次为棕榈酸(16.48%)及香叶醇乙酸酯(9.02%),提示其可以作为制备柠檬香系香料的重要原料。结论:本方法稳定可靠,重现性好,适用于香青兰挥发油的化学成分分析。

Objective：To analyze the volatile components from Dracocephalum moldavica L. with gas chromatography-mass spectrography （GC-MS）. Methods：The volatile components were extracted and isolated with steam distillation method according to the Pharmacopeia of People＇s Republic of China. Their chemical compositions and relative contents were analyzed with GC-MS. Results： Fifty volatile compounds of Dracocephalum moldavica L. were identified, and the relative contents of Citral is the highest （31.43%）. The second and the third are n-Hexadecanoic acid （16.48%） and geraniol ester （9.02%） respectively. It indicated that Dracocephalum moldavica L. could be served as an important material for making lemon spice. Conclusions：The method is reliable, stable and reproducible, therefore can be applied to the analysis of volatile oil components from Dracocephalum moldavica L.