RESUMO
The chemical and analgesic comparison of essential oils of Cymbopogon nardus (L) Rendle of Benin and Congo was investigated. The chemical analysis wa carried out by using GS/MS for identification of components of the two essential oils while acetic acid-induced writhings, hot plate and tail flick test models were used for analgesic activity. The results showed that the two essential oils exhibited comparable activity on acetic acid-induced writhings, however, the essential oil of Benin induced more significant effect on hot plate model while the Congolese specie showed more effect in the tail flick test. These observations could be explained by some qualitative and/or quantitative differences observed between the constituents of the two essential oils studied.
RESUMO
L'etude; de juillet 1988 a mai 1989; de la variation des huiles essentielles des lippia cultives (Brazzaville; Congo) met en evidence un mouvement continu de ces huiles des fleurs vers les feuilles et inversement. La teneur des differents constituants varie de facon plus ou moins prononcee selon la partie de la plante consideree alors que le profil global des huiles reste le meme. Cette etude permet de situer la periode de recolte la plus favorable pour cette plante a effets bactericide et antifongide etablis
