Resumen de Composition and antimicrobial screening of the essential oil from the leaves and stems of senecio atacamensis phil. From chile

Julio Benites, Felipe Bravo, Mauricio Rojas, Rose Fuentes, Cristina Moiteiro, Florência Venâncio

• An essential oil from Senecio atacamensis Phil. (Asteraceae) was obtained by hydrodistillation of its aerial parts (leaves and stems) and its composition was determined by GC and GC/MS analysis. The identification by GC of the essential oil components, in both leaves and stems respectively, showed α-terpinene (36.05% and 20.57%); α-phellandrene (27.79% and 25.37%), and p-cymene (11.85% and 22.55%) as the most abundant monoterpenes. Furthermore, the oil was tested for its antimicrobial activity using paper disc diffusion and the dilution broth method, exhibiting moderate inhibition of human pathogenic bacteria.