Table 1.
Biochemical data for all of the evaluated parameters in the analyzed Brassicaceae species.
| Parameters | B. oleracea | R. raphanistrum | B. juncea | E. vesicaria | N. officinale |
|---|---|---|---|---|---|
| Broccoli | Daikon | Mustard | Rocket Salad | Watercress | |
| Water content (%) | 91.06 | 93.59 | 86.75 | 93.31 | 88.94 |
| Dry matter (%) | 8.94 | 6.41 | 13.25 | 6.69 | 11.06 |
| Reducing sugars (mg GLU/g FW) | 4.66 ± 0.24 b | 4.47 ± 0.21 b | 6.40 ± 0.59 ab | 7.98 ± 0.35 a | 8.44 ± 0.95 a |
| Total sugars (mg GLU/g FW) | 16.48 ± 1.26 ca | 28.27 ± 1.30 b | 58.11 ± 4.19 a | 16.99 ± 0.75 c | 18.87 ± 1.26 bc |
| Chl a (μg/g FW) | 737.83 ± 32.84 b | 623.55 ± 30.69 bc | 982.29 ± 24.51 a | 681.83 ± 21.04 bc | 584.76 ± 14.06 c |
| Chl b (μg/g FW) | 223.92 ± 20.14 b | 170.29 ± 7.14 c | 409.15 ± 29.78 a | 131.81 ± 6.66 d | 233.04 ± 5.57 b |
| ChlTOT (μg/g FW) | 961.75 ± 45.45 b | 793.83 ± 26.48 c | 1391.44 ± 41.15 a | 813.65 ± 23.50 bc | 817.80 ± 18.18 bc |
| Chl a/Chl b | 3.37 ± 0.22b b | 3.66 ± 0.19 b | 2.51 ± 0.18 c | 5.22 ± 0.27 a | 2.51 ± 0.05 c |
| TCar (μg/g FW) | 217.30 ± 12.00 a | 190.58 ± 8.21 a | 175.04 ± 15.83 a | 213.30 ± 5.90 a | 96.87 ± 6.29 b |
| TCar/ChlTOT | 0.23 ± 0.01 b | 0.24 ± 0.01 ab | 0.12 ± 0.01 c | 0.26 ± 0.00 a | 0.12 ± 0.01 c |
| TPC (mg GAE/g FW) | 3.63 ± 0.11 a | 3.25 ± 0.12 ab | 1.02 ± 0.05 c | 2.98 ± 0.11 b | 3.08 ± 0.27 b |
| TAnth (μg ME/g FW) | 172.51 ± 24.37 b | 57.56 ± 4.52 cd | 405.52 ± 31.55 a | 42.26 ± 7.71 d | 52.28 ± 4.32 cd |
| Reduced ascorbic acid (μg AsA/g FW) | 98.27 ± 10.7 b | 93.9 ± 5.12 b | 366.07 ± 100 a | 25.86 ± 3.12 d | 38.55 ± 3.66 c |
| Total ascorbic acid (μg AsATOT/g FW) | 124.1 ± 10.77 b | 125.58 ± 8.15 b | 606.87 ± 71.89 a | 29.67 ± 3.86 c | 137.52 ± 14.59 b |
| AsA/AsATOT | 0.79 ± 0.03 a | 0.76 ± 0.09 ab | 0.57 ± 0.09 b | 0.87 ± 0.10 a | 0.29 ± 0.04 c |
| DPPH radical scavenging assay (IC50 mg/mL) | 3.93 ± 0.27 b | 2.93 ± 0.33 b | 10.54 ± 1.00 a | 12.11 ± 0.50 a | 4.26 ± 0.42 b |
| Antioxidant activity—FRAP assay (mmol Fe2/g FW) | 8.6 ± 0.3 a | 7.6 ± 0.1 a | 3.2 ± 0.2 b | 2.1 ± 0.1 b | 8.6 ± 0.3 a |
Chl, chlorophyll; TCar, total carotenoids; TPC, total polyphenols content; TAnth, total anthocyanins; AsA, ascorbic acid; GLU, glucose; GAE, gallic acid equivalent; ME, malvin-chloride equivalent; DPPH, 2,2-diphenyl-1-picrylhydrazyl radical; FRAP, Ferric Reducing Antioxidant Power; different superscript letters indicate a significant difference at p < 0.05.