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| Olmedo,R; Herrera,J.M; Lucini,E.I; Zunino,M.P; Pizzolitto,R.P; Dambolena,J.S; Zygadlo,J.A. |
| The development of natural insecticides would help to decrease the negative impact of synthetic insecticides. Fumigant toxicity of essential oil of Tagetes filifolia Lag (Asterales: Asteraceae) and its major compounds were evaluated against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae). The essential oils were analyzed by gas chromatography-mass spectrometry. The essential oil and (E)-anethole were the most toxic at 24 h against adult insects (CL50 = 2.4 y 2.6 µL/mL water, respectively). Changes in the products of lipid peroxidation were evidenced by an increase in malondialdehyde content. Acetylcholinesterase activity in vitro, of T. castaneum adults, was also reported. (E)-anethole and estragole showed similar acetylcholinesterase inhibition (54... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fumigant toxicity; Tagetes filifolia; Tribolium castaneum; Lipid peroxidation; Acetylcholinesterase activity. |
| Ano: 2015 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2015000200004 |
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| Herrera,J.M; Zunino,M.P; Massuh,Y; Pizzollito,R.P; Dambolena,J.S; Gañan,N.A; Zygadlo,J.A. |
| 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: a- 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:... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sitophilus zeamais Essential oils Aphyllocladus decussatus Aloysia polystachya Minthostachys verticillata Tagetes minuta a; B- Unsaturated carbonyl ketones. |
| Ano: 2014 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2014000100004 |
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| Peschiutta,M.L; Arena,J.S; Ramirez Sanchez,A; Gomez Torres,E; Pizzolitto,R.P; Merlo,C; Zunino,M.P; Omarini,A.B; Dambolena,J. S; Zygadlo,J. A. |
| The insecticidal and antifungal properties of Mexican oregano (Lippia graveolens) essential oil from the Dominican Republic were investigated under laboratory conditions against two main pests of stored grains: Sitophilus zeamais and Fusarium verticillioides. Although oregano essential oil at 600 μl/l air did not result in a significant mortality of S. zeamais after 24 hours of exposure by fumigation, this essential oil was a powerful acetylcholinesterase (AChE) inhibitor in vitro. One of the main components of oregano essential oil, p-cymene, presented fumigant toxicity and AChE inhibition activity against the maize weevil. The L. graveolens essential oil antifungal activity against F. verticillioides was evaluated at 50, 100 and 200 µl/l, and it... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acetylcholinesterase inhibition; Fungal pathogen; Lippia graveolens; Maize pest control; Maize weevil. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2016000200003 |
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