African Journal of
Pure and Applied Chemistry

  • Abbreviation: Afr. J. Pure Appl. Chem.
  • Language: English
  • ISSN: 1996-0840
  • DOI: 10.5897/AJPAC
  • Start Year: 2007
  • Published Articles: 357

Full Length Research Paper

Multifactorial discriminant analysis of leaf oil of C. odorata L. King and Robinson from Côte d'Ivoire

Esse Leon Wognin
  • Esse Leon Wognin
  • Laboratoire de Chimie Organique Biologique, UFR-SSMT, Université ´ Félix Houphouët-Boigny, BPV 34 Abidjan, Côte d?Ivoire.
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Affia Florence Brou
  • Affia Florence Brou
  • Laboratoire de Chimie Organique Biologique, UFR-SSMT, Université ´ Félix Houphouët-Boigny, BPV 34 Abidjan, Côte d?Ivoire.
  • Google Scholar
Thierry Acafou Yapi
  • Thierry Acafou Yapi
  • Laboratoire de Chimie Organique Biologique, UFR-SSMT, Université ´ Félix Houphouët-Boigny, BPV 34 Abidjan, Côte d?Ivoire.
  • Google Scholar
Kidjegbo Augustin Touré
  • Kidjegbo Augustin Touré
  • Laboratoire des Mathématiques et des Nouvelles Technologies de l?Information, Institut National Polytechnique Félix Houphouët Boigny BP 1093 Yamoussoukro, Côte d?Ivoire.
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Tomi Félix
  • Tomi Félix
  • Université de Corse-CNRS, UMR 6134 SPE, Equipe Chimie ET Biomasse Route des Sanguinaires, 20000 Ajaccio, France.
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Zanahi Felix Tonzibo


  •  Received: 05 January 2015
  •  Accepted: 27 January 2015
  •  Published: 26 February 2015

Abstract

The chemical composition of 71 essential-oil samples isolated from the leaves of Chromolaena odorata harvested in eight Ivoirian sites (Toumodi, Dougba, Yamoussoukro, Zambakro, Toumbokro, Attiegbakro, Tiebissou and Tie-N’Diekro) was investigated by GC-FID, including the determination of retention indices (RIs), and by 13C-NMR analyses. In total, 31 components accounting for 55.5 - 90.2% of the oil composition were identified. The content of the main components varied from sample to sample namely geijerene (3.2 - 26.4%), germacrene D (1 - 28.5%), (E)-β-caryophyllene (8.1 - 18.3%), α-pinene (0.2 - 8.5%) and δ-cadinene (1.4 - 9.5%). Other constituents present at appreciable contents were β-pinene (0 - 8.3%), α-copaene (2.2 - 8.0%), α-humulene (2.1 - 4.7%). The 71 samples were submitted to factorial discriminant analysis using 40 variables (4 physicochemical constants yield 31 chemical constituents and 4 geographical coordinates), which allowed the distinction of eight groups within the oil samples labeled according to the eight sites of harvest in respect of chemical components.

 

Key words: Chromolaena odorata, Asteraceae, essential oil composition, factorial discriminant analysis, physico-chemical constants, geijerene, germacrene D, (E)-β-caryophyllene).