Abstract

Leaves of Palisota hirsuta (Thunb) K. Schum. and Trema orientalis (L) Blume. were collected from a farm land in Nigeria. The volatile oils were isolated using hydrodistillation and GC-MS method to determine their yield and composition. Antimicrobial activities of various oils obtained were also evaluated. Thirty-three (33) and thirty-seven (37) compounds were identified representing 98.9% and 99.4% of the entire constituents in the leaf oils of P. hirsuta and T. orientalis respectively. The main components of P. hirsuta oil were nonanal (19.6%), 1-Octen-3-ol (9.4%), hexenal (7.7%) and o-Cymene while those from T. orientalis were tetradecanal (33.3%), n-hexadecanoic acid (19.5%), farnesylacetone (5.6%) and linalool (4.3%). Both leaf oils displayed different activity against the tested microorganisms.

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