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This study aimed to determined vitamin C content by capillary electrophoresis, total phenolic content (TPC), and 2,2-diphenyl-1-picrylhydrazyl radical-scavenging capacity in fruits of blackberry ( Rubus ulmifolius ), plum ( Prunus domestica ), carambola ( Averrhoa carambola ), cape gooseberry ( Physalis peruviana ), red and yellow guava ( Psidium cattleianum ), acerola ( Malpighia emarginata ), and jabuticaba ( Myrciaria cauliflora ). Among the studied fruits, acerola showed the highest vitamin C concentration (1266.5 ± 13.1 mg 100 g -1 fresh weight (FW)), TPC (666.4 ± 52.6 mg gallic acid equivalent 100 g -1 FW), and antioxidant capacity (1279.0 ± 25.9 mg ascorbic acid equivalent 100 g -1 FW), reinforcing that this fruit is an important natural source of bioactive compounds. The fruits jabuticaba, followed by red and yellow guava, showed intermediated values of TPC (285.4 ± 15.2 to 199.5 ± 10.6 mg gallic acid equivalent 100 g -1 FW) and antioxidant capacity (734.5 ± 5.8 to 362.0 ± 0.3 mg ascorbic acid equivalent 100 g -1 FW), while the fruits carambola and cape gooseberry showed the lowest values of both. Therefore, specially acerola, jabuticaba, red guava, and yellow guava can be considered a supply of bioactive compounds to the diet.

Vitamin C, total phenolics, and antioxidant capacity of fruits cultivated in Brazil