Paper Details

Chemical composition and bioefficacy of Dennettia tripetala and Uvariodendron angustifolium leaves essential oils against the Angoumois grain moth, Sitotroga cerealella

Elvis Adjalian, Philippe Sessou, Fifa T.D. Bothon, Justine Dangou, Théophile Odjo, Gilles Figueredo, Jean-Pierre Noudogbessi, Dansou Kossou, Chantal Menut, Dominique Sohounhloue

DOI: https://dx.doi.org/10.12692/ijb/5.8.161-172

Int. J. Biosci. 5(8), 161-172. October, 2014. (PDF)

Abstract:

The essential oils of the leaves of two aromatic species collected in Benin, Dennettia tripetala and Uvariodendron angustifolium were analyzedby GC and GC / MS. The major components of the D. tripetala oil were 2-Phenylnitroethane (52.6%), linalol (26.8%) and methyl eugenol (5.6%) That U. angustifolium was dominated by geranial (44.9%), neral (32.1%) and geraniol (2.0%). The evaluation of the toxicity on S. cerealella wa performed in the laboratory by a fumigation method in a closed glass jar at a temperature of 29 ± 2 °C and natural photoperiod with a relative humidity of 70 ± 10%. The results show an insecticidal effect on the samples for the two dose 0.5μl.ml-1 24 h after exposure, with an effect significantly higher in the case of D. tripetala (LC50 = 0.253μl.ml -1and LC99 = 2.685μl.ml-1) efficiency. This toxicity of the essential oils was alsoillustrated by the significant inhibition of emergence of insects compared to control groups, without affecting the germination of rice seeds treated.