Caracterización física, composición química y enantiomérica del aceite esencial extraído de las hojas de Minthostachys verticillata

Abstract

Abstract: In the present work, the essential oil obtained from the leaves of the species is studied. Minthostachys verticillata, the species was collected in the province of Latacunga. He Leaf moisture percentage was 73.64% and was determined using a thermobalance. The essential oil of Minthostachys verticillata was obtained by drag distillation of steam, giving a yield of 1.0%. The physical properties of the oil determined with AFNOR standards were; a density of 0.9486 g/cm3 with standard deviation of &#61617; 0.0023, a refractive index of 1.479 with a standard deviation of &#61617; 0.001 and an activity optical of -27.75 with standard deviation of &#61617; 9.560. The chemical composition of the oil essential was determined by gas chromatography coupled to spectrometry and gas ionization detector and the chirality of the compounds was identified using a enantiomeric column. The identification of the compounds was based on the retention index, In total, 100 compounds were identified, corresponding to 99.32% of the total composition of the essential oil. The major compounds were: Piperitone (25.65%), Carvacrol acetate (14.53%), Menthone (8.42%), Carvacrol (6.47%), Menthone <iso> (4.89%), Piperitone expoxid <cis> (3.66%), Limonene (3.41%), Pulgone (2.85%), Cymene (2.65%), Linalool (2.57%). 3 enantiomeric pairs were identified; (+) Pinene <&#945;->,) Pinene <&#946;->, Carvacrol acetate.