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(a) Percentage of remaining compounds after incubation of the extract with various concentrations of DPPH (0, 0.25, and 0.5 mM). Data are presented as means ± SEM (n = 3). * p < 0.05 vs. control (DPPH = 0 mM); (b) Heat map representation of the percentage of remaining compounds clustered according to their aglycone moieties: delphinidin (1, 2, 4), petunidin (6, 8, 10), cyanidin (3, 5, 7), peonidin (9), and malvidin (12, 13).
