Table 1.
Quality characteristics, pigments content, and radical scavenging activity of PO samples obtained by different extraction methods.
| Virginia | Valencia | |||||
|---|---|---|---|---|---|---|
| CP | Sox | Mac | CP | Sox | Mac | |
| AV (mg KOH/g) | 0.50 ± 0.05 a | 0.59 ± 0.03 a | 0.81 ± 0.02 b | 0.46 ± 0.01 a | 0.56 ± 0.05 a | 0.80 ± 0.01 b |
| PV (meq O2/kg) | 2.15 ± 0.15 a | 12.9 ± 0.10 b | 4.25 ± 0.05 c | 3.7 ± 0.10 c | 11.8 ± 0.20 d | 5.25 ± 0.15 e |
| p-AnV | 0.84 ± 0.08 a | 3.20 ± 0.02 b | 3.77 ± 0.05 c | 0.75 ± 0.05 a | 2.13 ± 0.15 d | 4.68 ± 0.65 e |
| TOTOX | 5.14 ± 0.22 a | 29.00 ± 0.17 b | 12.27 ± 0.14 c | 8.15 ± 0.14 d | 25.73 ± 0.24 e | 15.18 ± 0.36 f |
| E232 | 0.790 ± 0.002 a | 1.510 ± 0.001 b | 1.237 ± 0.001 c | 0.99 ± 0.005 d | 1.434 ± 0.005 e | 1.352 ± 0.004 f |
| E270 | 0.034 ± 0.002 a | 0.131 ± 0.001 b | 0.104 ± 0.001 c | 0.051 ± 0.001 d | 0.132 ± 0.003 b | 0.183 ± 0.001 e |
| Chlorophyll (mg/kg) | 0.72 ± 0.00 a | 0.18 ± 0.02 b | 0.27 ± 0.01 c | 0.42 ± 0.01 d | 0.15 ± 0.00 b | 0.10 ± 0.02 b |
| Carotenoid (mg/kg) | 0.51 ± 0.00 a | 0.37 ± 0.02 bc | 0.4 ± 0.00 b | 0.29 ± 0.00 cd | 0.21 ± 0.02 de | 0.18 ± 0.02 e |
| RSA (% inhibition DPPH) | 47.68 ± 0.10 a | 28.58 ± 0.26 b | 11.17 ± 0.05 c | 50.10 ± 0.15 d | 30.17 ± 0.10 e | 12.66 ± 0.20 f |
Results are expressed as the mean values ± standard deviation of the three replicates (mean ± SD, n = 3); (a−f) different letters within a row indicate significant statistical differences (p ≤ 0.05). Acid value (AV); peroxide value (PV); p-anisidine value (p-AnV); totox value (TOTOX); conjugated dienes (E232); conjugated trienes (E270), and radical scavenging activity (RSA).