Chemical variability of Juniperus oxycedrus ssp. oxycedrus berry and leaf oils from Corsica, analysed by combination of GC, GC–MS and 13C-NMR

✍ Scribed by Jean Brice Boti; Ange Bighelli; Carlos Cavaleiro; Ligia Salgueiro; Joseph Casanova

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 182 KB
• Volume: 21
• Category: Article
• ISSN: 0882-5734
• DOI: 10.1002/ffj.1579

✦ Synopsis

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 α α α α-pinene, myrcene and germacrene D in the oils from berries and α α α α α-pinene, β β β β β-phellandrene and ∆ ∆ ∆ ∆ ∆3-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 α α α α-pinene, myrcene and germacrene D) and in the leaf oils (differentiated by the contents of α α α α α-pinene, β β β β β-phellandrene and ∆ ∆ ∆ ∆ ∆3-carene). (Z)-6-Pentadecen-2-one, an unusual alkenone present in several samples of leaf oil, was identified using 13 C-NMR spectroscopy.