Journal of
Medicinal Plants Research

  • Abbreviation: J. Med. Plants Res.
  • Language: English
  • ISSN: 1996-0875
  • DOI: 10.5897/JMPR
  • Start Year: 2007
  • Published Articles: 3830

Full Length Research Paper

Constituents and antimicrobial properties of the leaf essential oil of Gossypium barbadense (Linn.)

Emmanuel E. Essien1, Sherifat O. Aboaba2 and Isiaka A. Ogunwande3*
Department of Chemistry, University of Uyo, Uyo, Akwa Ibom State, Nigeria. 2Department of Chemistry, University of Ibadan, Ibadan, Nigeria. 3Department of Chemistry, Faculty of Science, Lagos State University, Badagry Expressway Ojo, P. M. B. 0001, Lasu Post Office, Ojo, Lagos, Nigeria.
Email: [email protected].

  •  Accepted: 15 June 2010
  •  Published: 04 March 2011

Abstract

The chemical composition of the Nigerian-grown cotton leaf essential oil, Gossypium barbadense L., (Malvaceae) analyzed by GC and GC/MS techniques revealed the presence of nineteen components, accounting for 92.6% of the total oil fraction. The major constituents were the monoterpenes comprising of tricyclene (29.6%), bornyl acetate (18.6%), α-pinene (12.8%), α-terpinene (11.1%), isoledene (6.0%) and β-pinene (5.4%). There were conspicuous absences of oxygen-containing sesquiterpenoid compounds. It was observed that α- and β-bisabolol, bisabolene oxide, caryophyllene oxide and α- copaene, the specific markers of the essential oil of some Gossypium species, were not detected in the sample under study. The oil displayed moderate antimicrobial potentials to some tested organisms.

 

Key words: Gossypium barbadense, essential oil composition, tricyclene, bornyl acetate, antimicrobial.

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