Infraspecific chemical variability of the leaf essential oil of Juniperus phoenicea var. turbinata from Portugal

The essential oil composition of 68 individual plants of Juniperus phoenicea from Portugal was investigated by GC, GC-MS and 13C NMR. α-Pinene, β-phellandrene, α-terpinyl acetate and myrcene were found to be the main constituents. Botanical and chemical data as well as phytogeographical distribution...

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Bibliographic Details
Published in:Biochemical systematics and ecology 2001-12, Vol.29 (11), p.1175-1183
Main Authors: Cavaleiro, Carlos, Rezzi, Serge, Salgueiro, Ligia, Bighelli, Ange, Casanova, Joseph, Proença da Cunha, António
Format: Article
Language:English
Subjects:
13C NMR
Cupressaceae
Essential oil
GC–MS
Infraspecific variability
Juniperus phoenicea var. turbinata
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Summary:The essential oil composition of 68 individual plants of Juniperus phoenicea from Portugal was investigated by GC, GC-MS and 13C NMR. α-Pinene, β-phellandrene, α-terpinyl acetate and myrcene were found to be the main constituents. Botanical and chemical data as well as phytogeographical distribution indicate J. phoenicea var. turbinata as the unique subspecies occurring in Portugal. Nevertheless, this taxon exhibits chemical polymorphism. The results of the oil compositions were processed by hierarchical clustering and principal component analysis allowing to establish three groups of essential oils differentiated by the content of α-pinene, β-phellandrene and α-terpinyl acetate.
ISSN:0305-1978
1873-2925
DOI:10.1016/S0305-1978(01)00041-2