Chemical composition and antibacterial activity of the essential oil of Espeletia nana.
The essential oil of the leaves of Espeletia nana Cuatrec., obtained by hydrodistillation, was analyzed by GC-MS, which allowed the identification of 24 components, which made up 99.9% of the oil. The most abundant compounds were a-pinene (38.1%), beta-pinene (17.2%), myrcene (15.0%), spathulenol (4.2%), bicyclogermacrene (4.0%), a-zingiberene (4.0%), and gamma-himachalene (3.7%). Antibacterial activity was tested against Gram-positive and Gram-negative bacteria using the agar disk diffusion method. Activity was observed only against Gram-positive bacteria. MIC values were determined for Staphylococcus aureus ATCC 25923 (200 microg/mL) and Enterococcusfaecalis ATCC 29212 (600 microg/mL).
Postgrado Interdisciplinario en Quimica Aplicada, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela.
Alexis
A
Peña
Luis
L
Rojas
Rosa
R
Aparicio
Libia
L
Alarcón
José Gregorio
JG
Baptista
Judith
J
Velasco
Juan
J
Carmona
Alfredo
A
Usubillaga
D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D019659:Asteraceae / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D008826:Microbial Sensitivity Tests; D009822:Oils, Volatile / Q000032:analysis* / Q000494:pharmacology*
D000900:Anti-Bacterial Agents; D009822:Oils, Volatile