Análisis químico y enantiomérico de la fracción volátil destilada desde la especie ecuatoriana Myrcia mollis (Kunth) DC

Abstract

Abstract: In the present investigation the physical properties, chemical composition, enantiomeric and sensory analysis of the essential oil of the species Myrcia mollis (Kunth) DC of the province of Loja, obtained with the steam distillation method, were studied. The qualitative chemical composition was made by the GC-MS spectroscopic technique, and the quantitative by GC-FID, obtaining a total of 25 compounds, the majority being: β-Pinene (26.83%), α-Pinene (25.64) %), 1.8 Cineole (9.97%), Myrcene (4.48%), (E)- Caryophyllene (4.25%), Limonene (4.10%) and a relevant compound that could not be identified (5.72%). The ratio and enantiomeric excess of four pairs of enantiomers, Thujene, β-Pinene, Limonene and ɣ-Cadinene, was calculated by resolution in enantioselective columns. In addition, a sensory characterization of the odor produced by the active compounds was carried out, using the technique of successive AEDA dilutions and gas chromatography coupled to olfactometry (GC-O), where six compounds were identified, β-Pinene, 1.8-Cineole, ɣ-Terpinene, Terpinolene, (E)-Caryophyllene and an unidentified compound, which provide aromas: woody, mint, herbaceous and plastic, are contributing to the aromatic profile of the essential oil.