Abstract

In the present research, essential oil from Ageratina dendroides (Spreng.) R.M. King & H. Rob. and Gynoxys verrucosa Wedd. collected of Ecuador were investigated. The isolation of the essential oil was carried out by hydrodistillation and the chemical composition is determined by gas chromatography-mass spectrometry (GC-MS) and gas chromatography-flame ionization detector (GC-FID). In the two species a total of sixty-two volatile compounds were identified, which represent between 98.61 - 99.17 % of the total chemical composition. The main components were germacrene D (29.92 ± 0.68 %), δ-cadinene (9.31 ± 0.11 %) and cis-cadina-1,4-diene (5.48 ± 0.04 %) in the essential oil of Ageratina dendroides, and α-zingiberene (45.57 ± 1.66 %), α-amorphene (11.12 ± 0.24 %), ρ-cymene (15.23 ± 0.10 %) and α-phellandrene (11.72 ± 0.15 %) in the oil of Gynoxys verrucosa. Yield and physical properties of essential oil are also reported. This is the first report on volatile compounds for this species.

摘要

在目前的研究中，来自Ageratina dendroides (Spreng.) RM King & H. Rob. 的精油。和Gynoxys verrucosa Wedd。收集的厄瓜多尔进行了调查。精油的分离通过水蒸馏进行，化学成分通过气相色谱-质谱（GC-MS）和气相色谱-火焰电离检测器（GC-FID）测定。在这两个物种中，共鉴定出 62 种挥发性化合物，占总化学成分的 98.61 - 99.17%。主要成分为大根香叶烯d（29.92±0.68％），δ杜松烯（9.31±0.11％）和顺式中的精油-cadina -1,4-二烯（5.48±0.04％）紫茎泽兰dendroides和α-姜烯（45.57±1.66％），α-amorphene（11.12±0.24％），ρ伞花烃（15.23±0.10％），并在油α水芹烯（11.72±0.15％）Gynoxys疣状。还报道了精油的产量和物理特性。这是关于该物种挥发性化合物的第一份报告。