Anti-Salmonella activity of constituents of Ardisia elliptica Thunb.

Antibacterial activity against veterinary Salmonella was determined using dried fruit extracts of Ardisia elliptica Thunb. Chromatographic purification and spectroscopic structure studies provided three active anti-Salmonella compounds, namely, syringic acid, isorhamnetin and quercetin. The minimal inhibitory concentrations (MICs) of the isolated compounds ranged between 15.6 and 125.0 microg mL(-1).