CHEMOTAXONOMY OF PINES NATIVE TO THE BALK ANS - COMPOSITION OF THE ESSENTIAL OIL OF PINUS-HELDREICHII CHRIST

Essential oils from Pinus heldieichii have been studied and found to b e present in more important amount in boughs than in leaves. Our first results let us assume that an industrial process, the hydrodistillati on of unseparated boughs and leaves does not affect drastically the yi elds of the essential oils. In the case of Pinus heldreichii, fourty h eight components have been identified. The chemical composition of oil s obtained from leaves alone or from branches alone differ by the perc entages of alpha-pinene, limonene, beta-caryophyllene and germacrene D .