Abstract
The essential oil from the flowerheads of Anacyclus cyrtolepidioïdes, a wild Aceraceae herb, gathered in the south of Tunisia, was extracted and separated into four fractions F1-F4. Chemical constituents of those fractions were characterized. Seventy-five compounds, representing 70.2 % of the oil, were identified by GC and GC-MS. Monoterpene hydrocarbons constituted the most abundant terpene family of this oil, by occurrence of α-Pinene in highest percentage in the four fractions. Oxygenated monoterpenes (Compholenal) and Sesquiterpenes (β-Cubebene) were found in F2 at a highest value. Decanal, was found at the highest value in F2, and four carboxylic acids, which values were much important in F2. The crude oil and its four fractions were tested for their antibacterial activity. All the tested samples found to be active towards the gram-positive used strains. The composition-activity relationship is discussed on the basis of the profile of the crude essential oil and its fractions.
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