气相色谱-质谱法结合保留指数分析鸭儿芹不同部位挥发油成分

Volatile components of different parts of Cryptotaenia japonicathrough GC-MS analysis and Kovats retention index

目的研究鸭儿芹不同部位挥发油成分的差异。方法采用水蒸气蒸馏法提取鸭儿芹根、茎、叶、果实中的挥发油,对其进行气相色谱-质谱法(GC-MS)分析,并结合Kovats保留指数对其主要成分进行定性分析。结果鸭儿芹根挥发油检出28个峰,鉴定出28个化合物,占总离子峰的86.66%;鸭儿芹茎挥发油检出27个峰,鉴定出27个化合物,占总离子峰的88.01%;鸭儿芹叶挥发油检出27个峰,鉴定出27个化合物,占总离子峰的94.03%;鸭儿芹果实挥发油检出26个峰,鉴定出26个化合物,占总离子峰的88.32%。鸭儿芹全株共鉴定出35种挥发性化合物,各部位挥发油的主要成分为倍半萜化合物,含有少量的单萜。其中22种化合物为各部位共有,化合物19、23只存在鸭儿芹根挥发油,香树烯、化合物25、红没药醇只存在鸭儿芹果实挥发油,因此它们的种类及相同化合物的含量有一定差异。结论鸭儿芹挥发油含有多种生理活性物质,全草入药有其合理性,为进一步研究开发鸭儿芹提供一定的科学依据。

Objective To analyze and compare the chemical components of the volatile oil in different parts of Cryptotae-nia japonica .Methods Essential oils were extracted from the root ,stem ,leaf ,fruit of Cryptotaenia japonica through steam distillation .GC-MS analysis combined with Kovats retention index methods were used to analyze its main components .Results 28 peaks were separated and 28 compounds were identified from volatile oils from the root of Cryptotaenia japonica ,ac-counting for 86.66% of the total ,27 peaks were separated and 27 compounds were identified from volatile oils from stem of Cryptotaenia japonica ,accounting for 88 .01% of the total ,27 peaks were separated and 27 compounds were identified from volatile oils from leaves of Cryptotaenia japonica ,accounting for 94 .03% of the total ,26 peaks were separated and 26 com-pounds were identified from volatile oils from fruit of Cryptotaenia japonica ,accounting for 88 .32% of the total .35 kinds of volatile compounds were identified from the whole strain ,and the main components of each part of the volatile oil were sesquit-erpene compounds ,containing a small amount of monoterpenes .Among all the 35 compounds ,different parts of Cryptotaenia japonica share 22 compounds .Compounds 19 ,23 only exists in the volatile oil from the roots .Aromadendrene ,compound 25 , red myrrh alcohol only exists in the volatile oil from the fruit .So there is a certain difference in the types and quantity of the compounds .Conclusion The volatile oil of Cryptotaenia japonica contains many physiologically active substance .Take the whole plant as a medicine has its rationality ,which provide a scientific basis for the further research and development of Cryp-totaenia j aponica .