Table 2.
Peroxide value (expressed as meq O2/kg of lipids) of gluten-free oat biscuits packed in different films and stored in light and dark conditions up to 90 days
| Storage | PET/CPP_34 | BOPP_40 | PVC_12 | BOPP/CPP_50 | PE/EVOH/PP_50 | |
|---|---|---|---|---|---|---|
| Period | Condition | |||||
| Fresh samples | 3.1 ± 0.1 | |||||
| 30 d | L | 5.53 ± 0.06c | 6.03 ± 0.12b | 7.98 ± 0.24a | 6.08 ± 0.03b | 3.73 ± 0.14d |
| 60 d | 8.17 ± 0.31c | 9.69 ± 0.10b | 12.76 ± 0.16a | 10.18 ± 0.16b | 7.17 ± 0.15d | |
| 90 d | 14.24 ± 0.20d | 20.63 ± 0.18c | 35.39 ± 0.13a | 24.50 ± 0.26b | 12.11 ± 0.22e | |
| 30 d | D | 3.80 ± 0.10c | 4.20 ± 0.10b | 5.97 ± 0.15a | 4.32 ± 0.08b | 3.47 ± 0.12d |
| 60 d | 5.79 ± 0.25c | 6.30 ± 0.10b | 8.27 ± 0.15a | 6.43 ± 0.21b | 5.30 ± 0.10d | |
| 90 d | 8.27 ± 0.12c | 11.33 ± 0.15b | 13.77 ± 0.25a | 11.20 ± 0.10b | 6.12 ± 0.23d | |
The values are expressed as mean ± SD, n = 3. Means followed by the same superscript letter in a row are not significantly different (p > 0.05) between different samples at the same day of storage
PET/CPP_34: polyethylene terephthalate/casting polypropylene
BOPP_40: biaxially oriented polypropylene
PVC_12: polyvinylchloride
BOPP/CPP_50: biaxially oriented polypropylene/casting polypropylene
PE/EVOH/PP_50: polyethylene/ethylene vinyl alcohol/polypropylene
30 d: day 30; 60 d: day 60; 90 d: day 90
L light, D dark