Investigation of the Essential Oil of Ormenis africana from Morocco: Revision of Chemical Composition and Antibacterial Activity

El Hanbali F Barrero A.F
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Abstract

Abstract- The essential oil composition from the aerial parts of Ormenis africana (Asteraceae), an endemic species from Morocco, has been investigated by GC/MS. A total of 31 compounds were identified, representing 77%. After fractionation by column chromatography, the main compound was isolated and its structure elucidated by NMR spectroscopy. The essential oil was dominated by oxygenated compounds with spathulenol (45.8%) followed by camphor (7.1%), -cadinol (5.9%) and -bisabolol (5.9%) as the main compounds. This oil can be classified as spathulenol-type according to its spathulenol content. In vitro the antibacterial activity of the whole essential oil against three Gram positive (Bacillus cereus, Enterococcus faecalis, Streptococcus C) bacteria and three Gram negative (Proteus vulgaris, Escherichia coli, Pseudomonas aeroginosa) bacteria, showed significant results. Keywords: Asteraceae, Ormenis africana, Essential oil, Spathulenol, Antibacterial activity.
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摩洛哥非洲奥梅挥发油的研究:化学成分和抗菌活性的修订
摘要/ Abstract摘要:采用气相色谱/质谱法研究了摩洛哥特有植物Ormenis africana (Asteraceae)地上部分的挥发油成分。共鉴定出31个化合物,占77%。经柱层析分离,分离得到主要化合物,并用核磁共振谱分析了其结构。挥发油中以含氧化合物为主,以spathulenol(45.8%)次之,其次为樟脑(7.1%)、-cadinol(5.9%)和-bisabolol(5.9%)。根据其所含的spathulenol含量,可将其归类为spathulenol型。体外对3种革兰氏阳性菌(蜡样芽孢杆菌、粪肠球菌、C链球菌)和3种革兰氏阴性菌(寻常变形杆菌、大肠杆菌、气绿假单胞菌)的抑菌活性均有显著效果。关键词:Asteraceae, Ormenis africana,精油,Spathulenol,抗菌活性
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