The essential oils obtained by water distillation from the aerial parts of Helichrysum italicum G. Don subsp. microphyllum (Willd.) Nym. were analyzed by GC and GC/MS. Three different populations growing at different elevations and under different weather conditions were studied from their vegetative period to post-blooming time. Forty-eight constituents accounting for between 96.5% and 83.0% of total oils have been identified and quantified. Among the identified constituents those present in the highest percentage were neryl acetate (17.6-35.6%), nerol (3.7-14.4%) and eudesmen-5-en-11-ol (6.4-23.5%). Among them, the neryl acetal percentage decreased when 5-eudesmen-11-ol percentage increased, and limonene reached 7% relative composition. The main fraction of the oil consisted of oxygenated compounds present in higher concentrations in June. © 2010 Allured Business Media.
Chemical composition and variation of essential oil of wild Sardinian Helichrysum italicum G. don ssp. Microphyllum (Willd) Nym. from vegetative period to post blooming time / USAI M; FODDAI M; BERNARDINI A.F; MUSELLI A; J. COSTA; MARCHETTI M. - In: JOURNAL OF ESSENTIAL OIL RESEARCH. - ISSN 1041-2905. - 22:5(2010), pp. 373-380. [DOI: 10.1080/10412905.2010.9700350]
Chemical composition and variation of essential oil of wild Sardinian Helichrysum italicum G. don ssp. Microphyllum (Willd) Nym. from vegetative period to post blooming time
USAI, Marianna;FODDAI, Marzia;
2010
Abstract
The essential oils obtained by water distillation from the aerial parts of Helichrysum italicum G. Don subsp. microphyllum (Willd.) Nym. were analyzed by GC and GC/MS. Three different populations growing at different elevations and under different weather conditions were studied from their vegetative period to post-blooming time. Forty-eight constituents accounting for between 96.5% and 83.0% of total oils have been identified and quantified. Among the identified constituents those present in the highest percentage were neryl acetate (17.6-35.6%), nerol (3.7-14.4%) and eudesmen-5-en-11-ol (6.4-23.5%). Among them, the neryl acetal percentage decreased when 5-eudesmen-11-ol percentage increased, and limonene reached 7% relative composition. The main fraction of the oil consisted of oxygenated compounds present in higher concentrations in June. © 2010 Allured Business Media.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
