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Open AccessArticle

Chemical Composition and Toxicity against Sitophilus zeamais and Tribolium castaneum of the Essential Oil of Murraya exotica Aerial Parts

1
College of Life Sciences, Beijing Normal University, Haidian District, Beijing 100875, China
2
College of Chemical and Biological Engineering, Changsha University of Science and Technology, Changsha 41004, China
3
Department of Entomology, China Agricultural University, Haidian District, Beijing 100094, China
*
Author to whom correspondence should be addressed.
Molecules 2010, 15(8), 5831-5839; https://doi.org/10.3390/molecules15085831
Received: 10 June 2010 / Revised: 17 August 2010 / Accepted: 19 August 2010 / Published: 25 August 2010
In our screening program for new agrochemicals from Chinese medicinal herbs, Murraya exotica was found to possess insecticidal activity against the maize weevil, Sitophilus zeamais and red flour beetle, Tribolium castaneum. The essential oil of aerial parts of M. exotica was obtained by hydrodistillation and investigated by GC and GC-MS. The main components of M. exotica essential oil were spathulenol (17.7%), a-pinene (13.3%), caryophyllene oxide (8.6%), and a-caryophyllene (7.3%). Essential oil of M. exotica possessed fumigant toxicity against S. zeamais and T. castaneum adults with LC50 values of 8.29 and 6.84 mg/L, respectively. The essential oils also show contact toxicity against S. zeamais and T. castaneum adults with LD50 values of 11.41 and 20.94 mg/adult, respectively. View Full-Text
Keywords: Murraya exotica; Sitophilus zeamais; Tribolium castaneum; fumigant; contact toxicity; essential oil Murraya exotica; Sitophilus zeamais; Tribolium castaneum; fumigant; contact toxicity; essential oil
MDPI and ACS Style

Li, W.Q.; Jiang, C.H.; Chu, S.S.; Zuo, M.X.; Liu, Z.L. Chemical Composition and Toxicity against Sitophilus zeamais and Tribolium castaneum of the Essential Oil of Murraya exotica Aerial Parts. Molecules 2010, 15, 5831-5839.

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