info:eu-repo/semantics/article
Fumigant toxicity from five essential oils rich in ketones against Sitophilus zeamais (Motschulsky)
Fecha
2014-05Registro en:
Herrera, J. M.; Zunino, María Paula; Massuh, Yamile; Pizzollito, R. P.; Dambolena, Jose Sebastian; et al.; Fumigant toxicity from five essential oils rich in ketones against Sitophilus zeamais (Motschulsky); Universidad Nacional de Córdoba; Agriscientia; 31; 1; 5-2014; 35-41
1668-298X
Autor
Herrera, J. M.
Zunino, María Paula
Massuh, Yamile
Pizzollito, R. P.
Dambolena, Jose Sebastian
Gañan, Nicolas Alberto
Zygadlo, Julio Alberto
Resumen
Essential oils (EOs) and individual compounds act as fumigants against
insects found in stored products. In fumigant assays, Sitophilus zeamais
Motschulsky adults were treated with essential oils derived from Aphyllocladus
decussatus Hieron, Aloysia polystachya Griseb, Minthostachys verticillata
Griseb Epling and Tagetes minuta L , which are rich in ketones and their major
components: α- thujone, R-carvone, S-carvone, (-) menthone, R (+) pulegone
and E-Z- ocimenone. M. verticillata oil was the most toxic ( LC50: 116.6 µl /L
air) characterized by a high percentage of menthone (40.1%) and pulegone
(43.7%). All ketones showed insecticidal activity against S. zeamais. However,
pulegone (LC50: 11.8 µl/L air), R- carvone (LC50: 17.5 µl/L air), S-carvone (LC50:
28.1 µl/L air) and E-Z-ocimenone (LC50: 42.3 µl/L air) were the most toxic. These
ketones are a,b-unsaturated carbonyl. This feature could play a fundamental
role in the increase of insecticidal activity against S. zeamais.