Table 4.
Effect of active packaging using zein and zein/ZMEO fiber on anthocyanin content, antioxidant activity, and color parameter (L*, a*, and b*) in strawberries stored at 4 °C for 12 days.
| Active Packaging Treatment (AP) | Anthocyanin (mg 100 gFW) | Antioxidant Activity (mg/100 g) | Color Parameter | ||
|---|---|---|---|---|---|
| L* | a* | b* | |||
| Control | 138.99 ± 14.52 e | 40.40 ± 2.25 d | 36.75 ± 4.12 d | 31.85 ± 3.12 c | 19.36 ± 1.10 d |
| Z | 191.46 ± 12.41 d | 45.89 ± 2.54 c | 38.77 ± 2.54 c | 32.92 ± 3.22 bc | 20.38 ± 1.98 c |
| Z1 + ZMEO | 197.04 ± 16.65 c | 48.69 ± 3.12 b | 39.79 ± 3.84 b | 33.64 ± 3.00 ab | 20.67 ± 2.02 c |
| Z3 + ZMEO | 201.66 ± 16.57 b | 51.55 ± 4.24 b | 40.71 ± 4.23 a | 33.59 ± 3.25 ab | 21.38 ± 2.32 b |
| Z5 + ZMEO | 207.22 ± 14.20 a | 53.90 ± 4.98 a | 41.32 ± 3.73 a | 34.32 ± 3.45 a | 22.07 ± 2.00 a |
| Significance | ** | ** | ** | ** | ** |
| LSD (0.05) | 1.39 | 0.84 | 1.45 | 1.13 | 0.68 |
| Storage time (T) (day) | |||||
| 0 | 233.21 ± 19.44 a | 27.16 ± 1.29 e | 47.21 ± 2.78 a | 27.76 ± 2.31 d | 26.61 ± 2.15 a |
| 3 | 213.12 ± 24.09 b | 44.86 ± 3.89 d | 41.70 ± 3.58 b | 37.96 ± 3.24 a | 23.31 ± 2.651 b |
| 6 | 194.52 ± 20.54 c | 60.18 ± 4.22 a | 38.05 ± 3.81 c | 35.42 ± 2.87 b | 20.92 ± 2.42 c |
| 9 | 180.32 ± 18.68 d | 55.76 ± 4.07 b | 35.72 ± 3.30 d | 32.27 ± 3.01 c | 17.05 ± 1.87 d |
| 12 | 160.49 ± 17.45 e | 52.47 ± 5.55 c | 34.65 ± 3.22 e | 32.92 ± 3.24 c | 15.97 ± 1.88 e |
| Significance | ** | ** | ** | ** | ** |
| LSD (0.05) | 1.35 | 1.85 | 1.24 | 2.52 | 0.75 |
| Interaction AP × T | ** | ** | ** | ** | ** |
Data shown are the mean ± standard error of three replicates. Means within columns with same letters are not significantly different. ns: non-significant, **: significant.