Résumé

The purpose of this work was to explore the insecticidal activity
of essential oils extracted from two Eucalyptus species: Eucalyptus maidinii
F.Muell. and Eucalyptus cineria F.Muell collected from arboreta of Choucha
(Sejnene) and Souiniet (AinDraham). Fumigant toxicity was assessed for
essential oils alone and their combinations. Essential oils were obtained
using hydrodistillation method. Identification of oils compounds was
achieved through gas chromatography-mass spectrometry techniques (GC
and GC-MS). Insecticidal activity (fumigant toxicity) was experienced
against pests of stored products: Carpophilus hemipterus and Sitophilus
oryzae. GC and GC-MS analyzes showed that 1, 8- cineole was the major
compound of the oils with values of 72.85% and 69.04% for E. cineria and85.49% and 68.99% for E. maidinii collected respectively from Choucha and
Souiniet arboreta. Moreover, essential oils combination did not give a
synergistic effect since the LC50 values were equivalent with those of single
oils activities. Results revealed that fumigant potential varied upon
concentrations and exposure duration. E. maidinii essential oil seemed more
effective against the two insects especially C. hemipertus with 98% mortality
obtained after 24 h of exposure at the concentration74.73 µl/ l air. Overall,
this work pointed out the interest of using rich-cineole essential oils for the
control of stored-products pests, while, further investigations on the impact
on food quality should be undertaken.

Information

Item Type:	Journal
Divisions:
ePrint ID:	4485
Date Deposited:	2023-10-13
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/fr/publication/article/4485

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