n African Entomology - Composition of essential oils extracted from six aromatic plants of Kabylian origin (Algeria) and evaluation of their bioactivity on (Fabricius, 1775) (Coleoptera: Bruchidae)

Volume 22, Issue 2
  • ISSN : 1021-3589



The essential oils extracted from six plants from Kabylia (Algeria), namely and , were analysed by gas chromatography (GC/MS). Their biological activity was assessed on a pest destructive of stored products, on cowpea (). The results showed that these oils have two monoterpene compounds in common: α-pinene and β-pinene in different proportions. The bio-tests were conducted through contact, fumigation and repellency, under laboratory conditions. All the oils tested proved to be active, and the most significant action was the inhibition of oviposition during the tests through contact at a dose of 12 µl/50 g of bean seed. The essential oil of caused 50% mortality in adult at 24 hours at a dose of 4 µl/l of air in fumigation tests. In addition, the essential oils tested were highly repellent towards adult at a dose of 16 µl.

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