α -Pinene chemotype of leaf (needle) essential oils of Juniperus communis L. growing wild in Vilnius district

E-mail: rita.butkiene@chi.lt The chemical composition of seven leaf (needle) essential oils produced by individual plants of J. communis growing wild in Vilnius district was determined by GC and GC/MS. α-Pinene dominated in all oils (38.5– 59.9%). The second main compound in six oils was β-phellandrene (4.1– 11.4%) and α-cadinol in one oil (8.7%). The third major constituent in four oils was α-cadinol (3.3–8.0%) and δ-cadinene (6.2%), sabinene (4.3%), δ-3-carene (3.6%) in other oils. According to the ratios of monoand sesquiterpenoids, the leaf oils may be divided into two groups: I ~5:1 (4 oils) and II ~2:1 (3 oils). The identified 143 constituents comprised 96.2–99.4% of the leaf essential oils.