Assessment of antioxidant activity of spray dried extracts of Psidium guajava leaves by DPPH and chemiluminescence inhibition in human neutrophils - Fernandes, M. R. V.; Azzolini, Ana Elisa Caleiro Seixas; Martinez, M. L. L.; Souza, C. R. F.; Lucisano-Valim, Yara Maria; Oliveira, Wanderley Pereira de (BioMed Research International, 2014)