下田菊挥发油化学成分的研究

Chemical Composition of the volatile oil in Adenostemme lavenia (L.) D. Ktze

摘要:

利用水蒸汽蒸馏法、两相溶剂萃取法提取下田菊（Adenostemma lavenia (L.) O. Ktze.）地上部分的挥发油, 提取10 h的挥发油得率为0.990%。 采用毛细管气相色谱-质谱联用（GC-MS）技术结合计算机检索对该挥发油的化学成分进行了分析和鉴定. 并应用色谱峰面积归一化法计算各成分的相对含量. 从挥发油中共分离出36个峰, 鉴定了其中的35种成分, 占总量的99.56％, 其中α-荜澄茄油烯 (32.62%)、石竹烯 (24.97%) 和γ-榄香烯 (5.53%)为主要成分, 此外α- 石竹烯 (3.97%)、α-恰米烯 (3.57%)、双环 [4,3,0]-7-亚甲基-2,4,4-三甲基-2-乙烯基-壬烷 (3.41%)、γ-萜品烯 (3.07%)、d-柠檬烯 (2.57%)、α-蒎烯 (2.49%)及2-蒈烯 (2.28%)含量也较高。

Abstract:

The essential oil was obtained by steam distillation, followed by solvent extraction from the aerial parts of Adenostemme lavenia (L.) D. Ktze.. The yield of the essential oil reached 0.990% after steam distillation for 10 hours. The constituents of the obtained volatile oil were analyzed by GC-MS, and their relative contents were determined by peak area normalization. Thirty-six peaks were detected from the volatile oil, of which 35 chemical compounds were identified, accounting for 99.56％ of the volatile oil. The main components were α-cubebene (32.62%), caryophyllene (24.9%) and γ-elemen (5.53%). Some other monoterpenes and sesquiterpenes, such as α-caryophyllene (3.97%), α-chamigrene (3.57%), bicyclo [4,3,0]-7-methylene-2,4,4-trimethyl-2-vinyl nonane (3.41%), γ-terpinen (3.07%), d-limonene (2.57%), α-pinene (2.49%) and 2-Carene (2.28%) were also identified.