Seasonal and geographical influences on the chemical composition of Juniperus phoenicea L. essential oil leaves from the Northern Tunisia.
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).
Medini
Hanene
H
Laboratoire de Pharmacognosie, Faculté de Pharmacie, 5000 Monastir, Tunisia. hanene.medini@yahoo.fr
Elaissi
Ameur
A
Farhat
Farhat
F
Khouja
Mohamed Larbi
ML
Chemli
Rachid
R
Harzallah-Skhiri
Fathia
F
D008401:Gas Chromatography-Mass Spectrometry; D055593:Geological Phenomena; D018653:Juniperus / Q000737:chemistry* / Q000145:classification; D009822:Oils, Volatile / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry; D025341:Principal Component Analysis; D012621:Seasons; D014416:Tunisia
D009822:Oils, Volatile