Article (Scientific journals)
Toxicity Of Some Terpenoids Of Essential Oils Of Xylopia Aethiopica From Cameroon Against Sitophilus Zeamais Motschulsky
Kouninki, Habiba; Hance, Thierry; Noudjou, Félicité A. et al.
2007In Journal of Applied Entomology, 131 (4), p. 269-274
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Keywords :
Sitophilus zeamais; Xylopia aethiopica; Essential oil; monoterpenes; Stored grains protection
Abstract :
[en] The acute toxicity of essential oils from the whole fruit (EF) or from the fibres of the fruit (FF) of the local aromatic plants Xylopiα αethiopicα Dunal (Annonaceae) collected in north Cameroon was evaluated on Sitophilus zeαmαis adults. A concentration of 1 ml of essential oil per 100 g of maize seeds was tested to determine weevil mortality after 24 h of exposure. Under these conditions, the essential oil derived from both EF and FF of X. αethiopicα led to 100% mortality. In a second step, proportions of active compounds present in the oil of both EF and FF of X. αethiopicα were quantified. The toxicity of the four main compounds was tested against S. zeαmαis: α-pinene, β-pinene, -3-carene and terpinen-4-ol according to their proportion in the essential oil of the concerned plant part. β-pinene and terpinen-4-ol were responsible for 50% of the mortality at the proportion found in EF and FF essential oils respectively. When mixed, a synergic effect of the compounds was observed that restored the mortality percentage observed for the crude oil. It appears that X. αethiopicα essential oil could be a potential source of natural and low-cost insecticide to control storage pests.
Disciplines :
Entomology & pest control
Author, co-author :
Kouninki, Habiba;  Université Catholique de Louvain - UCL > Unité d'Ecologie et de Biogéographie
Hance, Thierry;  Université Catholique de Louvain - UCL > Unité d'Ecologie et de Biogéographie
Noudjou, Félicité A.;  Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx
Lognay, Georges ;  Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx > Unité de Chimie Analytique
Malaisse, François ;  Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx > Laboratoire d'Ecologie
Ngassoum, Martin. B.;  Université de Ngaoundéré > Département de Chimie Appliquée > ENSAI
Mapongmetsem, Pierre M.;  Université de Ngaoundéré - Faculté des Sciences > Département des Sciences Biologiques
Ngamo, Léonard S.T.;  Université de Ngaoundéré - Faculté des Sciences > Département des Sciences Biologiques
Haubruge, Eric  ;  Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx > Unité d'Entomologie Fonctionnelle et Evolutive
Language :
English
Title :
Toxicity Of Some Terpenoids Of Essential Oils Of Xylopia Aethiopica From Cameroon Against Sitophilus Zeamais Motschulsky
Publication date :
2007
Journal title :
Journal of Applied Entomology
ISSN :
0931-2048
eISSN :
1439-0418
Publisher :
Wiley-Blackwell Publishing Inc, Malden, Germany
Volume :
131
Issue :
4
Pages :
269-274
269-274
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
The definitive version is available at www.blackwell-synergy.com
Available on ORBi :
since 16 November 2010

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