Phenolic constituents and antioxidant capacity of Alternanthera tenella Colla - Salvador, Marcos José; Mertens-Takott, S. U.; Ferreira, Eliane de Oliveira; Castro, W. V.; Butterweck, V.; Derendort, H.; Dias, Diones Aparecida (Annual Congress of GA (Society for Medical Plant Research, 2005)