Volume 1, Issue 1

Leaf Oil Composition of Croton zambesicus Muell. Arg. Growing in Southwestern Nigeria: Essential Oil Chemotypes of C. zambesicus

 

Author(s): Moses S. Owolabi*, Lawal A. Oladipupo, Labunmi Lajide, Rebecca M. Hauser, and William N. Setzer
Department of Chemistry, Lagos State University, PMB 001, Ojo, Lagos, Nigeria.

Abstract: The leaf essential oil of Croton zambesicus growing in Odogbolu, Ogun State, Nigeria, was obtained and analyzed by GC-MS.  The leaf oil was dominated by the sesquiterpenoids b-caryophyllene (8.8%) and caryophyllene oxide (21.7%), the monoterpenoids linalool (6.2%) and camphor (5.9%), and the diterpenoident-trachyloban-3-one (8.1%).  A numerical cluster analyses has revealed at least two chemotypes of C. zambesicus, a monoterpene-rich chemotype, dominated by b-pinene and limonene, and a sesquiterpenoid-rich chemotype, dominated by b-caryophyllene and caryophyllene oxide.

Fig 1: Dendrogram obtained by cluster analysis of the percentage composition of essential oils from Croton zambesicus samples, based on correlation and using the unweighted pair-group method witharithmetic average (UPGMA).

 

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