Determination of antibacterial, antioxidant, antiplatelet and inhibition of cholinesterase activities from the methanolic extracts of Azorella species (Apiaceae)

In this study, we investigated the potential antibacterial, antioxidant and anti-platelet activities and the inhibition of cholinesterase from the methanolic extracts obtained from aerial parts of the two species of Azorella: A. spinosa (Constitution, Chile) and A. monantha (Torres del Paine, Enladrillado and Paso Vergara). All extracts showed only moderate inhibitory activity on acetylcholinesterase (AChE), the most active extract with IC50 = 27μg/mL was A. spinosa. Inhibition of platelet aggregation induced by ADP presented maximal aggregation to 70 and 57% on extracts of A. spinosa and A. monantha (Paso Vergara), respectively. The most active extract with antioxidant effect was A. spinosa with IC50 of 28.72µg/mL. Antibacterial activity of the extract on Escherichia coli, Pseudomonas aeruginosa and Acinetobacter baumannii was not present. The extracts of A. spinosa and A. monantha (Paso Vergara) presented the best results on the activities that were evaluated.