Chemical composition and histochemistry of Sphagneticola trilobata essential oil
AUTOR(ES)
Silva, Cleber José da, Barbosa, Luiz C. A., Demuner, Antonio J., Montanari, Ricardo M., Francino, Dayana, Meira, Renata M. S. A., Souza, Ana Olívia de
FONTE
Revista Brasileira de Farmacognosia
DATA DE PUBLICAÇÃO
17/01/2012
RESUMO
Anatomical and histochemical investigations of Sphagneticola trilobata (L.) Pruski, Asteraceae, secretory structures in leaves and stems and the seasonal variation of essential oils were carried out. Histochemical techniques enabled the specific location of the essential oil accumulation in the internal (canals) and external structures (trichomes). Histochemical analysis showed that the secretory trichomes produced steroids. The highest yield was obtained from plants collected in winter, when it was registered low temperature and precipitation. The essential oil was characterized by high percentage of hydrocarbon sesquiterpenes, hydrocarbon monoterpenes and low levels of oxygenated sesquiterpenes. The major components were germacrene D (11.9-35.8%), α-phellandrene (1.4-28.5%), α-pinene (7.3-23.8%), E-caryophyllene (4.6-19.0%), bicyclogermacrene (6.0-17.0%), limonene (1.8-15.1%) and α-humulene (4.0-11.6%). The percentage of most of the individual constituents present in S. trilobata essential oil changed significantly during the months.
Documentos Relacionados
- Chemical composition and antibacterial activity of Brazilian propolis essential oil
- Antimicrobial activity and chemical composition of essential oil of Pelargonium odoratissimum
- Chemical composition and cytotoxicity activity of the essential oil of Pterodon emarginatus
- Anti-Candida activity and chemical composition of Cinnamomum zeylanicum blume essential oil
- Chemical composition and antimicrobial activity of Hedyosmum brasiliense Miq., Chloranthaceae, essential oil