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Composition of the essential oil of Micromeria varia Benth. ssp. thymoides (Sol. ex Lowe) Pérez var. thymoides , an endemic species of the madeira archipelago
Author(s) -
Pedro Luis G.,
Cristina Figueiredo A.,
Barroso José G.,
Fontinha Susana S.,
Looman Anja,
Scheffer Johannes J. C.
Publication year - 1995
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.2730100313
Subject(s) - sesquiterpene , nerolidol , essential oil , botany , germacrene d , chemistry , epoxide , composition (language) , horticulture , biology , linalool , biochemistry , linguistics , philosophy , catalysis
The composition of the essential oils isolated from the aerial parts of Micromeria varia Benth. ssp. thymoides (Sol. ex Lowe) Pérez var. thymoides , collected during the vegetative phase and the flowering period of the plant, was analysed by GC and GC‐MS. Both oils consisted mainly of monoterpenes (62‐69%), α‐pinene being the major component (20‐35%). Geranial (16%) and trans ‐nerolidol (15%) were the second and third most important constituents of the oil from the aerial parts collected during the vegetative phase of the plant, and β‐caryophyllene epoxide (12%) and β‐caryophyllene (10%) during the flowering period. The sesquiterpene fraction amounting to 27% of both oils, was dominated by trans ‐nerolidol (15%) during the vegetative phase, and by β‐caryophyllene epoxide (12%) during the flowering period of the plant.