Table 3.
Antioxidant content and activities of blueberry fruits at different maturity stages.
| Cultivars | Maturity Stages | Total Anthocyanins (mg/100 g) |
Total Flavonoids (mg CE/100 g) |
Total Phenolics (mg GAE/100 g) |
DPPH (mg/100 g) |
ABTS (mg/100 g) |
|---|---|---|---|---|---|---|
| Nelson | Unripe Ripe |
19.67 ± 0.06 e 136.51 ± 9.95 ab |
79.83 ± 6.86 bc 102.66 ± 9.70 a |
228.51 ± 3.17 b 300.90 ± 12.99 a |
271.69 ± 11.67 bc 427.39 ± 26.16 a |
975.12 ± 41.90 d 1424.10 ± 102.54 a |
| Toro | Unripe Ripe |
40.28 ± 1.38 d 145.20 ± 10.13 a |
66.20 ± 4.30 de 80.94 ± 2.18 b |
227.66 ± 5.05 b 287.33 ± 13.18 a |
279.75 ± 9.72 bc 385.39 ± 26.83 a |
988.75 ± 57.41 d 1304.22 ± 60.77 b |
| Duke | Unripe Ripe |
28.19 ± 2.30 e 134.76 ± 8.69 b |
58.45 ± 2.30 e 71.78 ± 0.84 cd |
184.73 ± 7.67 d 242.46 ± 0.83 b |
183.01 ± 66.40 ef 322.17 ± 12.03 b |
830.32 ± 39.45 ef 1176.34 ± 76.06 c |
| Bluejay | Unripe Ripe |
21.81 ± 2.72 e 137.10 ± 0.14 ab |
38.89 ± 2.53 f 67.41 ± 3.80 d |
154.80 ± 0.36 e 241.61 ± 6.49 b |
151.19 ± 24.95 f 305.20 ± 1.47 b |
725.01 ± 61.02 f 1159.88 ± 84.77 c |
| Elliot | Unripe Ripe |
27.39 ± 2.51 e 70.89 ± 1.64 c |
42.56 ± 6.05 f 62.93 ± 2.12 de |
186.76 ± 14.67 d 203.31 ± 1.92 c |
202.11 ± 29.50 de 234.35 ± 2.65 cd |
795.06 ± 93.90 ef 874.04 ± 40.52 de |
Date are means ± standard deviation (mg/100 g fresh weight (FW)). a–g Values in the same column not sharing a common superscript are significantly different by Duncan’s multiple range test (p < 0.05).