Table 6. Effects of different treatments on the non-heme iron content (μg/g) of ground pork during 9 days of refrigerated storage
| Treatment | Storage time (days) |
| 1 | 3 | 5 | 7 | 9 |
| UT | 1.21±0.14ABde | 1.41±0.07Aab | 1.03±0.09Bcd | 1.13±0.17ABbc | 1.30±0.33ABa |
| HT | 1.13±0.07Ae | 1.11±0.08Ac | 1.02±0.00ABd | 1.09±0.14Abc | 0.95±0.25Bb |
| SCT 1 | 1.40±0.13Aab | 1.25±0.18ABbc | 1.07±0.12BCbcd | 1.12±0.06BCbc | 0.96±0.29Cb |
| SCT 2 | 1.37±0.11Aabc | 1.36±0.09ABab | 1.20±0.03Babc | 1.31±0.12ABa | 1.23±0.10ABab |
| SCT 3 | 1.43±0.08Aa | 1.40±0.05Aab | 1.27±0.09ABa | 1.12±0.13Bbc | 1.11±0.29Bab |
| SCT 4 | 1.27±0.07ABbcde | 1.31±0.09Aab | 1.17±0.06ABCabcd | 1.11±0.07BCbc | 1.02±0.19Cab |
| SCT 5 | 1.29±0.02ABbcd | 1.35±0.07Aab | 1.24±0.31ABab | 1.04±0.10Bc | 1.25±0.17ABab |
| SCT 6 | 1.26±0.07ABcde | 1.38±0.19Aab | 1.14±0.03BCabcd | 1.07±0.10Cbc | 1.08±0.09Cab |
| SCT 7 | 1.37±0.07ABabc | 1.48±0.17Aa | 1.29±0.12ABa | 1.26±0.15Bab | 1.23±0.10Bab |
UT: untreatment (control); HT: heat treatment (40°C for 2 h); SCT: supercritical CO2 treatment (1, 35°C/17.2 MPa/2 h; 2, 40°C/17.2 MPa/2 h; 3, 45°C/17.2 MPa/2 h; 4, 40°C/17.2 MPa/0.5 h; 5, 40°C/17.2 MPa/1 h; 6, 40°C/13.8 MPa/2 h; 7, 40°C/20.7 MPa/2 h).
Different capital letters on the same row indicate significant differences between storage time for the same treatment (p<0.05).
Different lowercase letters in the same column indicate significant differences between treatments on the same storage time (p<0.05).