Volume 1, Issue 4 (2012)
JCP 2012, 1(4): 313-320 |
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Khani A, Basavand F, Rakhshani E. Chemical composition and insecticide activity of lemon verbena essential oil. JCP 2012; 1 (4) :313-320
URL: http://jcp.modares.ac.ir/article-3-11949-en.html
URL: http://jcp.modares.ac.ir/article-3-11949-en.html
1- Department of Plant Protection, Faculty of Agriculture, University of Zabol, Zabol, Iran
Abstract: (19025 Views)
Essential oil extracted from the leaves of Lemon verbena, Lippia citriodora Kunth (Verbenaceae) was tested for fumigant toxicity in the laboratory against two stored-product insects Tribolium confusum Jacquelin du Val and Callosobruchus maculatus (F.). The chemical composition of the isolated oil was examined by GC-MS. The major compounds were citral (11.3%), limonene (10.6%), neral (7.9%), 4-phenyl undecan-4-ol (7.7%), α-curcumene (6.5%), α-cedrol (4.5%) and caryophyllene oxide (4.5%). Furthermore, lesser amounts of the other components include carveol (3.7%), linalool (3.5%), α-pinene (3.2%), caryophyllene (2.8%) and geranyl acetat (1.8%) were existed in the essential oil. In the fumigant toxicity set at 27 ± 1 °C and 65 ± 5% R. H., darkness condition and 24 h exposure time, considerable differences in mortality of insect to essential oil vapor were observed. C. maculatus (LC50 = 10.2 µl/l air) was significantly more susceptible than T. confusum (LC50 = 497.8 µl/l air). These results suggested that essential oil of L. citriodora could be used as a potential control agent against stored-product insects.
Received: 2012/06/23 | Accepted: 2012/10/21 | Published: 2012/10/22
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