Metabolomic analysis of the mechanism of action of yerba mate aqueous extract on Salmonella enterica serovar Typhimurium

Introduction Salmonella enterica serovar Typhimurium is a Gram-negative enteropathogen that infects millions of people worldwide each year; the emergence of drug-resistant strains has heightened the need for novel treatments. Aqueous extracts of yerba mate (Ilex paraguariensis) effectively inhibit drug-resistant S. Typhimurium in vitro. Some chemical constituents that contribute to the extract’s antibacterial activity have been identified, but the mechanism of action of the extract is still unknown.