Table 4.
Antioxidant activity and TZCD of spray- and freeze-dried Zn-amaranth powders encapsulated with 10% (w/w) of different wall materials.
| Drying method | Wall material | Antioxidant activity (mM (TE)/g DW) | TZCD (%) | |
|---|---|---|---|---|
| FRAP | DPPH | |||
| Spray-drying | MD | 13.24 ± 0.66c | 8.73 ± 0.05e | 37.70 ± 1.81b |
| RMD | 14.17 ± 0.23c | 9.71 ± 0.08c | 34.13 ± 1.01c | |
| HICAP | 15.68 ± 0.41b | 8.99 ± 0.03d | 46.65 ± 0.85a | |
| CAP | 16.90 ± 0.81b | 10.10 ± 0.14b | 35.29 ± 1.08bc | |
| GA | 22.04 ± 0.05a | 12.26 ± 0.03a | 36.21 ± 0.19bc | |
| Freeze-drying | MD | 6.48 ± 0.19c | 7.50 ± 0.18d | 91.23 ± 1.14b |
| RMD | 6.38 ± 0.12c | 8.11 ± 0.04c | 96.95 ± 1.10a | |
| HICAP | 7.00 ± 0.14bc | 8.23 ± 0.08c | 98.96 ± 0.28a | |
| CAP | 7.33 ± 0.55b | 8.60 ± 0.07b | 90.81 ± 0.75b | |
| GA | 9.04 ± 0.15a | 10.10 ± 0.08a | 91.10 ± 1.32b | |
Data are expressed as the means ± standard deviations of triplicates. Means with the same letter in each column mean not significantly different (p < 0.05, Tukey test) (MD: maltodextrin; RMD: resistant maltodextrin; HICAP: HI CAP 100; CAP: Capsul; GA: gum Arabic).