Department of Agriculture;
Federal University of Lavras;
Lavras;
Brazil;
Department of Chemistry;
Federal University of Lavras;
Lavras;
Brazil;
Federal University of Vales de Jequitinhonha e Mucuri;
Unaí;
Brazil;
Federal University of Vales de Jequitinhonha e Mucuri;
Diamantina;
Brazil;
Rumex acetosa L.; Tropaeolum majus L.; Stachys byzantina K.Koch; Reducing Power;