Óleos essenciais das folhas de Vernonia Remotiflora e Vernonia Brasiliana: composição química e atividade biológica

• Main Author: Maia,Ana Isabel V.
• Publication Date: 2010
• Other Authors: Torres,Maria Conceição M., Pessoa,Otília Deusdênia L., Menezes,Jane Eire S. A. de, Costa,Sônia Maria O., Nogueira,Vanessa Lúcia R., Melo,Vânia Maria Maciel, Souza,Elnatan B. de, Cavalcante,Maria Gilvânia B., Albuquerque,Maria Rose Jane R.
• Format: Article
• Language: por
• Source: Química Nova (Online)
• Download full: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000300018
• topic: Vernonia remotiflora; Vernonia brasiliana; essential oils

The chemical composition of the essential oils, obtained by hidrodistillation, from leaves of two Vernonia species (V. remotiflora and V. brasiliana), was determined by GC-FID and GC-MS. Both essential oils were predominantly constituted by sesquiterpenes (92.0 - 93.4%). The main constituents of the oil from V. brasilana were (E)-caryophyllene (36.7%), germacrene D (35.5%), and α-humulene (11.7%), while (E)-caryophyllene (42.2%) and bicyclogermacrene (20.0%) were the major ones in the oil from V. remotiflora. Although with moderate activity both oils showed acetylcholinesterase and antibacterial activities.