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  • Title: Seasonal and geographical influences on the chemical composition of Juniperus phoenicea L. essential oil leaves from the Northern Tunisia.
    Author: Medini H, Elaissi A, Farhat F, Khouja ML, Chemli R, Harzallah-Skhiri F.
    Journal: Chem Biodivers; 2009 Sep; 6(9):1378-87. PubMed ID: 19774601.
    Abstract:
    The essential-oil composition of 60 individual trees of Juniperus phoenicea L. from four Tunisian populations in three different periods were investigated by GC and GC/MS analyses. 59 Compounds were identified in the oils, and a relatively high variation in their contents was found. All the oils were dominated by the terpenic hydrocarbon fraction, and the main component was alpha-pinene (20.28-40.86%). The results of the oil compositions were processed by hierarchical clustering and principal component analysis (PCA) allowing establishing four groups of essential-oils differentiated by one compound or more. Pattern of geographic variation in essential-oil composition indicated that individuals from the continental site (Makthar) were clearly distinguished from those from littoral localities (Tabarka, Hawaria, and Rimel).
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