不同生长年限当归挥发油对比研究

Contrast Analysis on Volatile Oil of Radix Angelicae Sinensis in Different Growth Periods

目的:对直播一年生和育苗移栽两年生当归挥发油进行比较分析,从而为一年生当归具有一定的应用价值提供理论支持。方法:水蒸气蒸馏法提取挥发油,挥发油成分分析用GC-MS法。结果:直播一年生当归挥发油得率达1.042%,二年生为0.664%,直播一年生挥发油含量远远高于两年生,且色泽不同;直播一年生当归和两年生当归挥发油的化学组成基本一致;直播一年生当归挥发油中藁本内酯含量为54.01%,两年生当归挥发油中藁本内酯含量为46.06%;其另外2种主要成分1,4-环己二烯-1,2-羧酸酐,3-正丁烯基苯酞,在两年生当归挥发油中的含量分别为11.22%,14.19%,高于直播一年生中的2.49%,7.02%;萜烯类成分在直播一年生中的总含量为27.85%,显著高于两年生当归中的12.58%。结论:直播一年生当归在挥发油的提取方面具有良好的开发前景。

l Objective： T Sinensis （RAS）. Method： The analyzed by GC-MS. Result： The o study the volatile oil in one-year-old and two-year-old of Radix Angelicae volatile oil is obtained by steam distillation, their chemical constituents is content of volatile oil was 1. 042% in one-year-old of RAS, which was much higher than the content of volatile oil 0. 664% in the two-year-old of RAS. And their color was completely different. The chemical composition of volatile oil was basically consistent. In one-year-old of RAS the content of ligustilide was 54.01% , while the content of ligustilide was 46.06% in the two-year-old of the RAS. In the two- year-old of RAS, the content af 1, 4-cyclohexadiene-1, 2-dicarboxylic anhydride and butylidene phthalide were 11.22% and 14. 19%, significantly above the 2.49% and 7.02% in the one-year-old of RAS. Terpenes of one- year-old of RAS were 27.85% , markedly higher than the 12.58% from the two-year-old of the RAS. Conclusion： The one-year-old of RAS have certain development value in the extraction of the content of volatile oil.