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Seasonal and geographical influences on the chemical composition of Juniperus phoenicea L. essential oil leaves from the Northern Tunisia.

Authors
  • 1
  • 1 Laboratoire de Pharmacognosie, Faculté de Pharmacie, 5000 Monastir, Tunisia. [email protected] , (Tunisia)
Type
Published Article
Journal
Chemistry & Biodiversity
1612-1880
Publisher
Wiley Blackwell (John Wiley & Sons)
Publication Date
Volume
6
Issue
9
Pages
1378–1387
Identifiers
DOI: 10.1002/cbdv.200800202
PMID: 19774601
Source
Medline
License
Unknown

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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