𝔖 Bobbio Scriptorium
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The essential oils of two endemic Teucrium species from Madeira: T. abutiloides L'Hér. and T. betonicum L'Hér

✍ Scribed by José G. Barroso; Luís G. Pedro; A. Cristina Figueiredo; Teresa Antunes; Isabel Sevinate-Pinto; Johannes J. C. Scheffer

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
219 KB
Volume
8
Category
Article
ISSN
0882-5734

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✦ Synopsis

The essential oils isolated by hydrodistillation from aerial parts of Teucriurn abutilodes L'Her. and of T. betonicurn L'Htr. 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. betonicurn. However, large differences, both qualitative and quantitative, were observed with regard to the fraction of sesquiterpenes of these oils. Germacrene-D (13%) and 6-cadinene (11Y0) were the most abundant sesquiterpenes in the oil of T. abutiloides, and P-caryophyllene (12%) in that of T. betonicurn. Oct-1-en-3-01 was the main component of both oils (20% of the oil of T. abutiloides and 24% of that of T. betonicurn).

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