Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3709

Full Length Research Paper

Composition and insecticidal activity of the essential oil of Cananga odorata leaves against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae)

Jun Cheng1, Kai Yang2, Na Na Zhao2, Xuan Gao Wang1, Shu Ying Wang1 and Zhi Long Liu2*
1Key Laboratory of Urban Agriculture (North), Ministry of Agriculture, Beijing University of Agriculture, Haidian District, Beijing 102206, China. 2Department of Entomology, China Agricultural University, 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, China.
Email: [email protected]

  •  Accepted: 15 February 2012
  •  Published: 16 May 2012

Abstract

The aim of this research was to determine chemical composition and insecticidal activity of the essential oil of Cananga odorata (Lam.) Hook. f. and Thomson leaves against maize weevils (Sitophilus zeamais Motschulsky). Essential oil of C. odorata leaves was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 23 components of the essential oil were identified. The principal compounds in the essential oil were linalool (21.08%), linalool acetate (16.14%), α-pinene (12.73%), eugenol (8.86%) and α-terpineol acetate (7.71%) followed by isobornyl acetate (3.56%), α-terpineol (3.46%), and camphor (3.23%). The essential oil of C. odorata leaves exhibited strong contact toxicity against S. zeamais with an LD50 value of 33.14 µg/adult. The essential oil also possessed fumigant toxicity against S. zeamais with an LC50 value of 14.77 mg/L. The results indicated that the essential oil of C. odorata leaves showed potential in terms of contact and fumigant toxicity against grain storage insect.

 

Key words: Cananga odorataSitophilus zeamais, contact toxicity, fumigant, essential oil composition.