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Molecules 2012, 17(6), 7255-7265; doi:10.3390/molecules17067255

Chemical Composition and Insecticidal Activity Against Sitophilus zeamais of the Essential Oils Derived from Artemisia giraldii and Artemisia subdigitata

1
Department of Entomology, China Agricultural University, Haidian District, Beijing 100193, China
2
State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China
3
Analytical and Testing Center, Beijing Normal University, Beijing 100875, China
*
Authors to whom correspondence should be addressed.
Received: 7 May 2012 / Revised: 6 June 2012 / Accepted: 7 June 2012 / Published: 13 June 2012
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Abstract

The aim of this research was to determine the chemical composition and insecticidal activity of the essential oils derived from flowering aerial parts of Artemisia giraldii Pamp. and A. subdigitata Mattf. (Family: Asteraceae) against the maize weevil (Sitophilus zeamais Motsch.). Essential oils of aerial parts of A. giraldii and A. subdigitata were obtained from hydrodistillation and investigated by GC and GC-MS. A total of 48 and 33 components of the essential oils of A. giraldii and A. subdigitata were identified, respectively. The principal compounds in A. giraldii essential oil were β-pinene (13.18%), iso-elemicin (10.08%), germacrene D (5.68%), 4-terpineol (5.43%) and (Z)-β-ocimene (5.06%). 1,8-Cineole (12.26%) and α-curcumene (10.77%) were the two main components of the essential oil of A. subdigitata, followed by β-pinene (7.38%), borneol (6.23%) and eugenol (5.87%). The essential oils of A. giraldii and A. subdigitata possessed fumigant toxicity against the maize weevils with LC50 values of 6.29 and 17.01 mg/L air, respectively. The two essential oils of A. giraldii and A. subdigitata also exhibited contact toxicity against S. zeamais adults with LD50 values of 40.51 and 76.34 µg/adult, respectively. The results indicated that the two essential oils show potential in terms of fumigant and contact toxicity against grain storage insects.
Keywords: Artemisia giraldii; Artemisia subdigitata; Sitophilus zeamais; fumigant; contact toxicity; essential oil composition Artemisia giraldii; Artemisia subdigitata; Sitophilus zeamais; fumigant; contact toxicity; essential oil composition
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Chu, S.-S.; Liu, Z.-L.; Du, S.-S.; Deng, Z.-W. Chemical Composition and Insecticidal Activity Against Sitophilus zeamais of the Essential Oils Derived from Artemisia giraldii and Artemisia subdigitata. Molecules 2012, 17, 7255-7265.

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