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The essential oils of two endemic Teucrium species from Madeira: T. abutiloides L'Hér. and T. betonicum L'Hér
Author(s) -
Barroso José G.,
Pedro Luís G.,
Figueiredo A. Cristina,
Antunes Teresa,
SevinatePinto Isabel,
Scheffer Johannes J. C.
Publication year - 1993
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.2730080508
Subject(s) - sesquiterpene , teucrium , chemistry , essential oil , germacrene d , fraction (chemistry) , botany , stereochemistry , lamiaceae , chromatography , biology
Abstract The essential oils isolated by hydrodistillation from aerial parts of Teucrium abutilodes L'Hér. and of T. betonicum L'Hér. were obtained in almost similar yields (<0.5%). The oils were complex mixtures consisting mainly of sesquiterpene hydrocarbons, which amounted to 55% of the oil of T. abutiloides and to 45% of that of T. betonicum . However, large differences, both qualitative and quantitative, were observed with regard to the fraction of sesquiterpenes of these oils. Germacrene‐D (13%) and δ‐cadinene (11%) were the most abundant sesquiterpenes in the oil of T. abutiloides , and β‐caryophyllene (12%) in that of T. betonicum . Oct‐l‐en‐3‐ol was the main component of both oils (20% of the oil of T. abutiloides and 24% of that of T. betonicum ).