From: Microbial inactivation and shelf life of apple juice treated with high pressure carbon dioxide
Pressure (MPa) | T (°C) | Time (min) | L* Untreated | L* Treated | a* Untreated | a* Treated | b* Untreated | b* Treated | ΔE |
---|---|---|---|---|---|---|---|---|---|
HPCD treatments | |||||||||
7.0 | 35 | 150 | 49.17b -0.87c 2.77c | 48.03c | -0.87d | -0.83f -0.83c 2.93c 1.15e | 2.77g | 2.93h | 1.15l |
13.0 | 35 | 150 | 49.50b -0.80c 2.77c | 48.70d | -0.87d | -0.80e, f 2.87c 0.83e | 2.77g | 2.87h | 0.83l |
13.0 | 50 | 80 | 49.73b -0.87c 2.73c | 48.53d | -0.87d | -0.87e, f | 2.73g | 2.47i | 1.24l |
16.0 | 50 | 80 | 49.17b -0.97c 2.77c | 48.77d | -0.97d | -0.83e, f | 2.77g | 2.33i | 0.62l |
16.0 | 60 | 40 | 49.17b -0.97c 2.77c | 48.67d | -0.97d | -0.87e, f | 2.77g | 2.33i | 0.68l |
Thermal treatment | |||||||||
- | 85 | 60 | 49.5b | 48.10c | -0.87d | -0.90e | 2.77g | 2.47i | 1.44l |
Sixth compression and decompression cycle | |||||||||
13.0 | 35 | 10 | 49.17b | 48.57d | -0.93d | -0.87e, f -0.87bc 2.83bc 0.62be | 2.73g | 2.83h | 0.62l |