There are few studies in which the antioxidant activity of the co-products obtained from exotic fruits in general and passion fruits in particular has been determined. Martínez et al. reported that the antioxidant activity of passion fruit fiber concentrate,measured using DPPH and FRAP assays, was 5.12 and 6.93 μM TE/g, respectively. However there are numerous studies in which the antioxidant activity of fresh exotic fruits has been determined. For example, Vasco, Ruales, and Kamal-Eldin (2008) reported that the antioxidant activity of passion fruit measured with the DPPH assay was 0.5 μM TE/g (fresh weight).