Table 3.
Food barriers of copper oxide biocomposite films as food packaging applications in different studies.
| Study | Film sample | Vis light (600 nm) | WVP | WS (%) | RH | CO2 (mL·m−2 day−1) | O2 (mL·m−2 day−1) | Moisture (%) |
|---|---|---|---|---|---|---|---|---|
| [142] | Agar/CuONPs | 13.9 ± 0.7 | 1.18 ± 0.06 | Not reported | 50% RH for 48h, 25°C | Not reported | Not reported | Not reported |
| Alginate/CuONPs | 14.3 ± 0.4 | 1.35 ± 0.17 | ||||||
| Carrageenan/CuONPs | 15.8 ± 0.9 | 1.19 ± 0.08 | ||||||
| Chitosan/CuONPs | 75.4 ± 0.9 | 1.03 ± 0.17 | ||||||
| CMC/CuONPs | 9.63 ± 0.5 | 1.40 ± 0.08 | ||||||
|
| ||||||||
| [159] | Starch | Not reported | 11.46 ± 0.23 | 32.25 ± 0.85 | 50 ± 5% RH for 48h, 25°C | Not reported | Not reported | Not reported |
| Starch-Ag (1%) | 10.49 ± 0.14 | 30.13 ± 0.74 | ||||||
| Starch-ZnO (1%) | 10.15 ± 0.14 | 27.57 ± 0.81 | ||||||
| Starch-CuO (1%) | 10.79 ± 0.20 | 30.86 ± 0.60 | ||||||
| Starch-Ag-ZnO-CuO | 10.70 ± 0.24 | 30.61 ± 0.47 | ||||||
|
| ||||||||
| [160] | Neat PLA | Not reported | 15.94 | Not reported | Not reported | 873 | 1308 | Not reported |
| PLA/ZnO : Cu/Ag (0%) | 13.70 | 260 | 104 | |||||
| PLA/ZnO : Cu/Ag (0.5%) | 11.35 | 230 | 97 | |||||
| PLA/ZnO : Cu/Ag (1%) | 18.72 | Invalid test | Invalid test | |||||
| PLA/ZnO : Cu/Ag (1.5%) | 15.60 | Invalid test | Invalid test | |||||
|
| ||||||||
| [162] | Chitosan film | Not reported | 3 × 10−3 ± 0.0001 | Not reported | 50% RH for 24h, 20°C | Not reported | Not reported | 33.7 ± 1.7 |
| CuONPs-chi film | 3 × 10−4 ± 0.0001 | 6.1 ± 2.2 | ||||||
|
| ||||||||
| [149] | Sodium alginate (1%)-CuONPs (1 mM) | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | ∼12.6 |
| Sodium alginate (3%)-CuONPs (1 mM) | ∼12.4 | |||||||
| Sodium alginate (3%)-CuONPs (5 mM) | ∼14.7 | |||||||
| CNW (0.5%)-SA (3%)-CuoNPS (5 mM) | ∼13 | |||||||