The powerful in vitro bioactivity of Euterpe oleracea Mart. seeds and related phenolic compounds Lillian Barros a,* , Ricardo C. Calhelha a,b , Maria João R.P. Queiroz b , Celestino Santos- Buelga c , Elândia, A. Santos d , Wiliam C.B. Regis d , Isabel C.F.R. Ferreira a,* a Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 1172, 5301-855 Bragança, Portugal. b Centre of Chemistry, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal. c GIP-USAL, Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain. d Pontifícia Universidade Católica de Minas Gerais (PUCMinas), Instituto de Ciências Biológicas e da Saúde, 30535-90, Belo Horizonte, MG. Brazil * Authors to whom correspondence should be addressed (I.C.F.R. Ferreira e-mail: iferreira@ipb.pt telephone +351-273-303219; fax +351-273-325405 and L. Barros e- mail: lillian@ipb.pt telephone +351-273-303903; fax +351-273-325405).