Two chemotypes of essential oils produced by the same Juniperus communis L. growing wild in Lithuania ; Dviejų chemotipų eteriniai aliejai, biosintetinami to paties Lietuvoje augančio laukinio kadagio (Juniperus communis L.)

It was found for the first time that needles and berries of the same junipers growing wild in Lithuania produced essential oils of different chemotypes. The Juniperus communis L. var. communis with leaves (needles) producing sabinene-chemotype essential oils were found only in three localities from the 34 investigated habitats, beside the plants with needles biosynthesizing α-pinene-chemotype oils. The dominant compounds in four from 49 (including earlier results) investigated needle essential oils were sabinene (34.1–40.8%), α-pinene (11.7–27.8%) and terpinen-4-ol (6.9–9.3%), while in the rest needle oils the main component was α-pinene (41.2–66.5%). The first major constituent of all berry essential oils under study was α-pinene (21.0–67.4 %). The second and third main constituents in unripe berry oils from bushes with needle oils of sabinene chemotype were sabinene (6.3–19.6%), myrcene (4.3–12.8%) and terpinen-4-ol (13.1%) and in the ripe berry oils myrcene (7.8–18.7%) and terpinen-4-ol (3.2–9.6%). The content of sabinene in all ripe berry oils was only 0.4–2.9%.