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ABSTRACT
The leaf oil of Diplolophium africanum Turcz. from the Koumondè region of northern Togo was analyzed using both Kovats indices and GC/MS. We identified 24 compounds including α-pinene (38%) and β-pinene (20%) as the major components followed by p-mentha-1,3,8-triene (11%). Except for a substantial decrease in the amount of the latter compound in one sample, the composition of the oil varied only slightly with the collection period. The oil exhibits insecticidal activity against the bruchids Callosobruchus maculatus Fab. and Callosobruchus subinnotatus Pic.
