Investigation of the change in essential oil components with the
composition of fatty acids from Hypericum heterophyllum Vent., an
endemic species in Turkey
Abstract
Turkey is an important center in terms of Hypericum species and 49 of
the 119 taxa are endemic. Hypericum heterophyllum is one of these
endemics. This study was carried out in order to determine some chemical
properties of H. heterophyllum. In dry capsules, 14% protein and 23%
oil were detected. This oil has been found to be rich in unsaturated
fatty acids (oleic and linoleic). The highest essential oil rate
(0.09%) in flowering dry herb was recorded in the period before
flowering. Also, germacrene-D, bicyclogermacrene, δ-cadinene,
spathulenol, α-guaiene, and valencene in herbage essential oil and
limonene, cis-ocimene, β-myrcene, and α, β-pinene in dry capsule were
determined as main components. It has been noted that both the essential
oil content and the components show variation depending on the
developmental stages of the plant and the part used.