Studies of Mediterranean oregano populations. VII. Chemical composition of essential oils of carvacrol-rich oregano of various origins

Six species of oregano were studied: Origanum compactum Benth., O. dictamnus L., O. dubium Boiss., O. minutiflorum Schwarz et Davis, O. onites L. and O. vulgare ssp. hirtum Ietswaart. Collected at their natural sites, sown, planted and oils isolated at the CNPPMAI. The oils were analyzed by GC and G...

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Bibliographic Details
Published in:The Journal of essential oil research 2006-05, Vol.18 (3), p.244-249
Main Authors: Figueredo, G, Cabassu, P, Chalchat, J.C, Pasquier, B
Format: Article
Language:English
Subjects:
carvacrol
chemical composition
chemotypes
essential oil composition
essential oils
gamma-terpinene
geographical variation
linalool
oregano
Origanum
Origanum compactum
Origanum dictamnus
Origanum dubium
Origanum minutiforum
Origanum onites
Origanum onites and Origanum vulgare ssp. hirtum
Origanum vulgare
p-cymene
provenance
seed extracts
seeds
thymol
volatile organic compounds
γ-terpinene
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Summary:Six species of oregano were studied: Origanum compactum Benth., O. dictamnus L., O. dubium Boiss., O. minutiflorum Schwarz et Davis, O. onites L. and O. vulgare ssp. hirtum Ietswaart. Collected at their natural sites, sown, planted and oils isolated at the CNPPMAI. The oils were analyzed by GC and GC/MS; 118 constituents were identified. All species presented a carvacrol chemotype (60 - 90%) accompanied by various chemical forms, such as a thymol-rich type, as in O. dictamnus, O. dubium and O. vulgare ssp. hirtum, in which its levels ranged widely (20 - 90%), or linalool-rich (27 - 90%), as in O. onites and O. dubium.
ISSN:1041-2905
2163-8152
DOI:10.1080/10412905.2006.9699077