A carregar...
Publicação
Trichomes micromorphology and essential oil variation at different developmental stages of cultivated and wild growing Mentha pulegium L. populations from Portugal
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 769.69 KB | Adobe PDF |
Orientador(es)
Resumo(s)
The indumentum of Mentha pulegium L., studied by light and scanning electron microscopy, was
characterized by non-glandular and glandular trichomes, which corresponded to the common arrangement
described for the Lamiaceae family. Histochemistry revealed the presence of pectins, total lipids,
acidic lipids and essential oils in the glandular trichomes secretions. The essential oil yield ranged
from 0.3% (w/d.w.) in the vegetative phase to 1.6% at full flowering. Gas chromatography and gas
chromatography–mass spectrometry essential oils composition analysis at full flowering revealed mostly
quantitative rather than qualitative variations, with pulegone as the major compound (52–82%), followed
by isomenthone (2–36%), menthone (0.1–17%), and piperitenone (1–15%). Comparative evaluation of cultivated
and wild growing populations showed differences in the relative amounts of the main components
of the essential oils isolated from plants harvested at different developmental stages.
Descrição
Palavras-chave
Mentha pulegium Lamiaceae trichomes essential oils histochemistry GC GC-MS
Contexto Educativo
Citação
"Industrial Crops and Products". ISSN 0926-6690. 43 (2013) 692-700