Bánvölgyi et al. (2009) evaluated the effect of concentration by reverse
osmosis on the characteristics of blackcurrant juice. Similarly to
the present work, the authors verified that the concentration factor
achieved for the antioxidant activity was lower than the obtained
for the total phenolic content. Gomes, Costa, Campos, Couri, and
Cabral (2011) also observed that the antioxidant activity did not increase
proportionally to the lycopene content, during the concentration
of watermelon juice by the same process.