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Chemical variability of Juniperus oxycedrus ssp. oxycedrus berry and leaf oils from Corsica, analysed by combination of GC, GC–MS and 13 C‐NMR
Author(s) -
Boti Jean Brice,
Bighelli Ange,
Cavaleiro Carlos,
Salgueiro Ligia,
Casanova Joseph
Publication year - 2006
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.1579
Subject(s) - chemistry , berry , myrcene , cupressaceae , germacrene , botany , terpene , sesquiterpene , terpenoid , chemical composition , essential oil , limonene , organic chemistry , food science , stereochemistry , biology , pollen
The composition of 27 samples of berry oil and 54 samples of leaf oil of Juniperus oxycedrus ssp. oxycedrus from Corsica was investigated by GC, GC–MS and 13 C‐NMR. The main constituents were terpene hydrocarbons, especially α ‐pinene, myrcene and germacrene D in the oils from berries and α ‐pinene, β ‐phellandrene and Δ3‐carene in the oils from leaves. The results of the analyses were submitted to k‐means partitioning and principal component analysis, which allowed the distinction of two compositions in the berry oils (differentiated by the contents of α ‐pinene, myrcene and germacrene D) and in the leaf oils (differentiated by the contents of α ‐pinene, β ‐phellandrene and Δ3‐carene). (Z)‐6‐Pentadecen‐2‐one, an unusual alkenone present in several samples of leaf oil, was identified using 13 C‐NMR spectroscopy. Copyright © 2005 John Wiley & Sons, Ltd.