RESUMEN
One oil sample isolated from aerial parts of Pulicaria mauritanica Coss. from Western Algeria has been analyzed by GC(RI), GC-MS and ¹³C NMR. In total, 21 components, accounting for 97.0% of the oil, were identified. Then, 36 oil samples coming from plants harvested at two flowering periods in three locations were analyzed by GC(RI) and ¹³C NMR. Although all the oil samples exhibited similar composition, dominated by carvotanacetone (89.2-96.1%), the yield of essential oil varied drastically from sample to sample (0.35-1.44%), depending on the location of harvest. The essential oil displayed moderate antimicrobial effect against bacteria, yeast and filamentous fungi (MIC = 2-4 µL/mL).
Asunto(s)
Antibacterianos/farmacología , Antifúngicos/farmacología , Aceites Volátiles/farmacología , Componentes Aéreos de las Plantas/química , Aceites de Plantas/farmacología , Pulicaria/química , Argelia , Antibacterianos/química , Antifúngicos/química , Bacterias/efectos de los fármacos , Hongos/efectos de los fármacos , Aceites Volátiles/química , Aceites de Plantas/química , Consumo de Alcohol en MenoresRESUMEN
Ajowan is a popular spice that is used in folk medicine in Algeria. Most studies reported that thymol is the main component of the seed oil. Isothymol was reported to be a constituent of essential oil isolated from aerial parts. Using plants harvested in five different locations in north western Algeria, every two weeks during the flowering stage, we demonstrated that isothymol was the major component when the plant was collected near the sea at low altitude and at the beginning of the flowering stage. In other cases, thymol is the predominant constituent.