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E-Journal of Chemistry
Volume 8 (2011), Issue 4, Pages 1937-1943
http://dx.doi.org/10.1155/2011/256729

Fumigant Components from the Essential Oil of Evodia Rutaecarpa Hort Unripe Fruits

Zhi Long Liu1 and Shu Shan Du2

1Department of Entomology, China Agricultural University, Yuanmingyuan West Road, Haidian District, Beijing-100094, China
2Protection and Utilization of Traditional Chinese Medicine of Beijing Area Major, Laboratory, Beijing Normal University, Haidian District, Beijing-100875, China

Received 16 December 2010; Accepted 23 January 2011

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Essential oil of chinese medicinal herb, Evodia rutaecarpa unripe fruits was found to possess insecticidal activity against maize weevils, Sitophilus zeamais and red flour beetles Tribolium castaneum. The essential oil of E. rutaecarpa was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 38 components of the essential oil were identified. The principal compounds in E. rutaecarpa essential oil were β-myrcene (17.7%), (Z)-β-ocimene (14.8%), α-phellandrene (14.7%), γ-terpinene (6.4%), linalool (5.7%) and β-thujene (5.1%). Bioactivity-guided chromatographic separation of the essential oil on repeated silica gel columns led to isolate three volatile components (β-myrcene, β-ocimene and α-phellandrene) from the essential oil. α-Phellandrene was strongest fumigant against S. zeamais adults, T. castaneum adults and T. castaneum larvae with LC50 values of 15.61, 19.78 and 47.96 mg/L air, respectively. β-Myrcene and β-ocimene also possess fumigant activity against the two species of insects but weaker fumigant activity than the crude essential oil.