Table 3.
Summary of the temperature of Nile perch fillets before and after the superchilling process at the origin (African supplier) and at arrival to the destination (European establishment)
| Company/Supplier of superchilled Nile perch fillets | ||||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | all | |
| Start fish temperature (before superchilling) | ||||||
| Mean* | 1.9c | 3.6a | 2.0b | 1.7c | 0.3d | 2.6 |
| SD | 0.4 | 0.4 | 0.5 | 0.2 | 0.2 | 1.0 |
| max | 2.9 | 4.8 | 3.6 | 2.0 | 0.7 | 4.8 |
| P95 | 2.6 | 4.3 | 3.1 | 2.0 | 0.6 | 4.1 |
| P90 | 2.4 | 4.1 | 2.7 | 1.9 | 0.5 | 3.8 |
| P75 | 2.2 | 3.8 | 2.2 | 1.8 | 0.4 | 3.5 |
| P50 | 1.9 | 3.6 | 2.0 | 1.8 | 0.2 | 2.4 |
| P25 | 1.7 | 3.3 | 1.8 | 1.7 | 0.1 | 1.9 |
| min | 1.0 | 2.5 | 0.9 | 1.2 | 0.0 | 0.0 |
| (# samples) | (n = 290) | (n = 430) | (n = 177) | (n = 28) | (n = 43) | (n = 968) |
| Superchilled fish temperature (after superchilling) | ||||||
| Mean* | –1.1b | –1.6d | –1.2c | –0.9a | –1.6d | –1.3 |
| SD | 0.3 | 0.2 | 0.2 | 0.1 | 0.2 | 0.3 |
| max | –0.6 | –0.8 | –0.9 | –0.7 | –1.4 | –0.6 |
| P95 | –0.6 | –1.2 | –1.0 | –0.7 | –1.4 | –0.8 |
| P90 | –0.8 | –1.3 | –1.1 | –0.8 | –1.5 | –1.0 |
| P75 | –1.0 | –1.4 | –1.2 | –0.9 | –1.5 | –1.1 |
| P50 | –1.1 | –1.6 | –1.2 | –0.9 | –1.6 | –1.4 |
| P25 | –1.2 | –1.7 | –1.3 | –1.0 | –1.7 | –1.6 |
| min | –2.4 | –2.1 | –1.8 | –1.1 | –2.0 | –2.4 |
| (# samples) | (n = 290) | (n = 430) | (n = 177) | (n = 28) | (n = 43) | (n = 968) |
| Fish temperature at the end of transport/storage (at arrival to the EU establishment) | ||||||
| Mean* | –0.7 | –0.7 | –0.7 | –0.7 | –0.7 | –0.7 |
| SD | 0.5 | 0.6 | 0.3 | 0.4 | 0.4 | 0.4 |
| max | 1.2 | 2.4 | 0.7 | 1.4 | 0.9 | 2.4 |
| P95 | 0.3 | 0.4 | –0.2 | –0.1 | 0.4 | 0.3 |
| P90 | –0.3 | –0.2 | –0.5 | –0.3 | –0.3 | –0.3 |
| P75 | –0.5 | –0.6 | –0.6 | –0.5 | –0.6 | –0.6 |
| P50 | –0.8 | –0.8 | –0.8 | –0.8 | –0.8 | –0.8 |
| P25 | –1.0 | –1.0 | –0.9 | –0.9 | –0.9 | –1.0 |
| min | –1.6 | –1.5 | –1.4 | –1.6 | –1.6 | –1.6 |
| (# samples) | (n = 135) | (n = 91) | (n = 52) | (n = 137) | (n = 59) | (n = 474) |
SD: standard deviation; P: percentile.
*
Superscript letters indicate statistically significant differences among mean values (Tukey HSD comparisons).
Note: Data reported in the ‘Nile perch study’ were obtained from the self‐monitoring programme of five companies.