Characterization and identification of the constituents of the essential oil of the leaves Agelaea pentagyna (Lam.) Baill. Connaraceae, endemic plant of Madagascar

Agelaea pentagyna (Lam.) Baill. is an endemic plant of Madagascar belonging to the Connaraceae family. The essential oil from leaves of this plant was extracted by hydrodistillation and analyzed by gas chromatography coupled with mass spectrometry (GC/MS), in order to determine the chemical composition of the volatile fraction and to identify the chemotypes of the species. The essential oil has a yellowish color and has a no odor; the yield was 0.05%. A total of fifty-nine compounds, 99.93% of its compounds are identified in the sample. The main compounds in the oil were δ-cadinene (16.284%), caryophyllene (10.151%), and benzylbenzoate (09.57%).