Investigation of the composition and stability of the essential oils of origanum vulgare ssp.vulgare L. andO. vulgare ssp.hirtum (Link) letswaart
2003
Veres, K. | Varga, E. | Dobos, Á | Hajdú, Zs | Máthé, I. | Németh, É | Szabó, K.
The essential oils ofOriganum vulgare L. ssp.hirtum (Link) letswaart andOriganum vulgare L ssp.vulgare (Fam. Lamiaceae), cultivated in Hungary, have been studied by GC and GC-MS and the qualitative and quantitative chemical composition of the essential oils in the two species have been compared.O. vulgare ssp.hirtum oil was found to contain carvacrol (76.4%), γ-terpinene (6.6%), thymol (0.23%), andp-cymene (4.7%) as the main constituents whereas the major compounds inO. vulgare ssp.vulgare oil werep-cymene (22.3%), caryophyllene oxide (10.2%), sabinene (7.9%), γ-terpinene (5.1%), thymol (0.34%), and spathulenol (4.8%). The stability of content and composition of the oils during the flowering period (economically beneficial period) were observed. The effect of long-term storage on the composition of the oil was also investigated for both the crude and distilled oil ofOriganum vulgare ssp.vulgare.
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