Table 5. Effects of different treatments on the heme iron content (μg/g) of ground pork during 9 days of refrigerated storage

Treatment	Storage time (days)
	1	3	5	7	9
UT	17.17±2.08Aabc	13.55±2.37Babc	14.21±2.59ABa	11.69±1.95Bab	6.13±2.25Cc
HT	16.04±1.49Abc	14.33±1.42Babc	13.35±1.15Bab	13.34±1.98Ba	11.34±1.57Cb
SCT 1	14.12±2.49Ac	10.80±4.67ABbc	9.36±2.75BCb	6.19±0.71Cd	6.73±0.19BCc
SCT 2	17.56±2.89Aabc	13.15±3.03ABabc	14.07±2.33ABa	11.26±3.64Babc	9.96±3.06Bb
SCT 3	15.07±3.06ABc	17.89±7.62Aa	11.03±3.30Bab	10.49±0.19Babc	15.23±2.32ABa
SCT 4	19.65±2.79Aab	13.27±0.87Babc	9.37±1.16Cb	9.18±1.54Cbc	10.29±2.16Cb
SCT 5	20.60±1.11Aa	10.42±1.84BCc	13.53±5.36Bab	8.53±2.08Ccd	10.74±2.07BCb
SCT 6	15.82±1.60Ac	15.65±0.40Aab	12.30±3.09Bab	9.96±1.30Bbc	10.09±2.52Bb
SCT 7	19.73±2.93Aa	13.67±1.06Babc	14.60±3.49Ba	9.52±2.25Cbc	12.22±1.41BCb

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).