兴安杜鹃叶中挥发性成分的GC-MS分析

采用水蒸气蒸馏法对兴安杜鹃叶中的挥发性成分进行提取,并运用气相色谱—质谱联用技术(GC-MS)对其挥发性成分进行了系统的分离和鉴定。从兴安杜鹃叶中共鉴定出54种挥发性成分,占总馏出成分的97.84%。兴安杜鹃叶主要挥发性成分为桉叶醇(eduesmol),相对含量10.95%;β-愈创木烯(β-guaiene),相对含量10.21%;长叶醛(longifolenaldehyde),相对含量7.88%;1,5,9,9-四甲基-1,4,7-环十一碳三烯(1,5,9,9-tetramethyl-1,4,7-cy-cloundecatriene),相对含量7.80%;杜鹃酮(germacrone),相对含量5.91%;(-)-葎草烯环氧化物Ⅱ((-)-HumuleneepoxideⅡ),相对含量5.52%;2-庚基-1,3-二氧戊环(2-heptyl-1,3-dioxolane),相对含量4.99%;石竹烯(caryo-phyllene),相对含量3.70%;(+)-γ-古芸烯((+)-γ-gurjunene),相对含量3.44%。

Volatile Components of the Essential Oils from the Leaves of Rhododendron dauricum L.by GC-MS

The volatile components of the essential oils from the leaves of Rhododendron dauricum L.were extracted by steam distillation and then analyzed by GC-MS.Total of Fifty four volatile components were identified,composed of 97.84% of total essential oil.The major volatile components are: eduesmol,relative content 10.95%;β-guaiene,relative content 10.21%;longifolenaldehyde,relative content 7.88%;1,5,9,9-tetramethyl-1,4,7-cycloundecatriene,relative content 7.80%;germacrone,relative content 5.91%;(-)-Humulene epoxide Ⅱ,relative content 5.52%;2-heptyl-1,3-dioxolane,relative content 4.99%;caryophyllene,relative content 3.70%;(+)-γ-gurjunene,the relative content 3.44%.