Özet:

Aim of study: The aim of this study is to evaluate intraspecific variations of Pinus pinea needle essential oils obtained from five locations in Turkey Area of study: The chemical composition of needle essential oil of Pinus pinea from five locations in Turkey was investigated and compared in order to determine differences among the regions (west Armutlu and Kozak: east Coruh, Maras Kapıcam and Onsen. Material and methods: Each sample set containing fresh needles (700-800 g), were distillated with 3 L of water for 2 h by means of hydro distillation. Analyses were carried out in the GC-MS instrument to identify and quantitate the compounds in the EOs. Main results: The results showed needle essential oil (EO) was dominated by monoterpene hydrocarbons (69.00- 84.90%), sesquiterpene hydrocarbons (4.10-8.80 %) and diterpenes (1.02-1.57%). As expected, the essential oil composed mainly of limonene (52.70-76.10%), β-phellandrene (3.19-7.20 %), α-terpineol (1.46-9.88 %) β-caryophellene (1.55-3.26 %) and germacrene D (0.67-2.43%). Similar to Italy and Algeria, the EOs from Turkey had limonene content greater than fifty percent, this percentage was lower in EOs from Greece and Tunisia. Highlights: Cluster analysis ensured the separation of three groups where the first group was the eastern stands Coruh and Kahramanmaras Kapıcam with higher amount of limonene and lower amount of β-caryophyllene. The other group western stands Armutlu and Kozak were exhibiting lower amounts of limonene and a higher amount of α-terpineol.

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