Abstract

This study was performed to investigate the chemical composition of essential oil in the leaves of Eucalyptus globulus from the Saïda region, southwest Algeria, as this has not been investigated to date. We investigated the essential oil composition through gas chromatography coupled with mass spectrometry. The extraction of essential oil by hydrodistillation provided a yield of 2.64 %. A total of 75 compounds were identified, among which the dominant constituents were p-cymene (20.24 %), spathulenol (14.10 %) and eucalyptol (11.30 %). Other notable compounds identified in the extracted essential oil were phellandrene, cryptone, β-thujene, cuminal, elixene and phellandral (2.54 % - 5.10 %). This is the first time that p-cymene has been reported as a major constituent of Algerian E. globulus.

摘要

这项研究的目的是调查阿尔及利亚西南部赛义达地区的桉树球叶中的香精油的化学成分，因为迄今为止尚未对此进行调查。我们通过气相色谱与质谱联用研究了香精油的成分。通过加氢蒸馏法提取精油的产率为2.64％。共鉴定出75种化合物，其中主要成分为对伞花烃（20.24％），七叶烯醇（14.10％）和桉树油（11.30％）。在提取的香精油中鉴定出的其他值得注意的化合物是凤尾兰，隐烯，β-thujene，孜然，e烯和凤尾兰（2.54％-5.10％）。这是第一次，p-cymene被报道为阿尔及利亚大肠埃希氏球菌的主要成分。