Chemical characterization of Tecoma stans (L.) Juss. ex Kunth volatile oils

Abstract

Gas chromatography (GC) and gas chromatography coupled with Mass spectrometry (GC-MS) analysis of the essential oils from leaf, stem, seed and flower of Tecoma stans (L.) Juss exKunth (family Bignoniaceae) obtained by hydrodistillation showed the presence of 64 chemical compounds. A total of 31 compounds in the leaf, 22 in the stem, 31 in the seed and 35 in the flower were identified representing 91.5%, 81.4%, 88.5% and 95.8% of the whole volatile oil respectively. The most abundant constituents were 1-octen-3-ol (24.8%) and 2,6,10-trimethylpentadecane (10.4%) in the leaf, linalool (11.4%) and 2,6,10-trimethylpentadecane (10.7%) in the stem, α-terpineol (11.7%) and β-selinene (9.3%) in the seed and (E)-β-ionone (11.2%) and linalool (10.8%) in the flower.