J Ethnopharmacol. 1991 Jul; 33(3): 253-5.

Xanthine oxidase inhibitory activity of Chilean Myrtaceae.

Theoduloz C, Pacheco P, Schmeda-Hirschmann G.

Facultad de Recursos Naturales, Departamento de Ciencias BiolÃ³gicas, Universidad de Talca, Chile.

Twenty-one Myrtaceae collections belonging to 10 species, 5 of which are used in Chilean folk medicine, were assayed for inhibitory activity towards the enzyme xanthine oxidase. Most leaf and stem extracts were devoid of activity or showed a weak inhibitory effect. Chilean ethnobotanical data on the species are linked to the astringent properties of Myrtaceae and their use for treating wounds and diarrhea. The results show the advantage of using proper plant selection criteria when searching for new drugs to treat human gout.