Essential oil and hydrosol composition of immortelle (Helichrysum italicum)Kunc, Nina (Avtor) Frlan, Antonela (Avtor) Baričevič, Dea (Avtor) Kočevar Glavač, Nina (Avtor) Kokalj, Meta (Avtor) Helichrysum italicumessential oilGS-MShydrosolhydrodistillationimmortellestemsThe chemical composition of essential oils and hydrosols of immortelle (Helichrysum italicum) stems with leaves obtained by hydrodistillation was identified using gas chromatography coupled with mass spectrometry (GC-MS). One-year-old and two-year-old plants of the same immortelle population, and plants from three Croatian populations, all grown in Slovenia, were included in the study. Themain compounds of essential oils of one-year-old and two-year-old plants were [alpha]-pinene, [alpha]-eudesmol, and rosifoliol. Among essential oils of the Croatian populations, three dominant components were found: [alpha]-pinene, geranyl acetate, and 2-phenylethyl tiglate. Both the essential oils and hydrosols of one-year-old plants were more diverse in their compositions than two-year-old plants. The predominant compounds of hydrosols of one- and two-year-old plantswere pentan-3-one, 3-octanone, 2,2-dimethylnon-5-en-3-one, and [alpha]-terpineol, and in the Croatian populations [alpha]-terpineol, 2,6-octadien-1-ol, 2,2-dimethylnon-5-en-3-one, and [alpha]-terpineol.20222022-10-07 09:56:21Članek v reviji141756sl