However, HAA was found to highly correlate with ascorbic acid content(r = 0.90 and 0.81 for ORAC and TEAC, respectively) and phenolic compounds (r = 0.81 and 0.72 for ORAC and TEAC, respectively) as presented in Table 7. Similar results were also demonstrated byother studies (Cano et al., 2003; Raffo et al., 2006; Toor and Savage,2006). In fact, the prediction of HAA is not as simple as the sum of all hydrophilic antioxidant content; it is dependent on synergistic effect among all antioxidants and their interaction with other constituents of the fraction (Lenucci et al., 2006). In this study, HAA obtained from ORAC and TEAC assays was found to increase significantly throughout storage and ripening durations, which wasgenerally concomitant with the accumulation of both ascorbic acidand phenolic compounds. However, the effect of different treatments on HAA, including lower temperature and pressure, was notevident even though the tomatoes subjected to a hyperbaric treatment at 0.9 MPa generated higher ascorbic acid and total phenolic content than the others, implying that the treatment intensity wasnot effective enough to cause sizable alteration in HAA as it wasevaluated with the methods used in this study.