TABLE 1.
Kinetic parameters of Pseudomonas spp. and the shelf life of gilt-head seabream stored aerobically under different isothermal conditions
| Temp T (°C) | Kinetic
parametera
|
||||||
|---|---|---|---|---|---|---|---|
| n | N0 (log CFU/g)b | Nmax (log CFU/g)c | μmax (h−1)c | Lag time (h)c | Shelf life (h)b | Ns (log CFU/g)c | |
| 0 | 7 (3) | 2.10–4.55 | 8.49 ± 0.72 | 0.054 ± 0.002 | 37.2 ± 5.9 | 145–255 | 7.24 ± 0.13 |
| 2 | 1 | 3.01 | 8.05 | 0.064 | 30.8 | 186 | 7.26 |
| 3 | 1 (1) | 4.55 | 9.18 | 0.070 | 30.3 | 100 | 6.68 |
| 5 | 3 (2) | 2.03–3.25 | 8.03 ± 0.25 | 0.103 ± 0.007 | 19.9 ± 2.8 | 98–152 | 7.22 ± 0.10 |
| 7 | 1 | 3.00 | 8.07 | 0.130 | 12.5 | 87 | 7.16 |
| 8 | 3 (1) | 3.04–4.50 | 8.05 ± 0.08 | 0.137 ± 0.008 | 13.0 ± 2.5 | 49–71 | 6.74 ± 0.30 |
| 10 | 2 (2) | 3.86–4.00 | 7.94 ± 0.09 | 0.191 ± 0.009 | 11.8 ± 1.2 | 45–51 | 6.88 ± 0.37 |
| 15 | 5 (3) | 2.95–4.25 | 8.71 ± 0.54 | 0.269 ± 0.026 | 8.10 ± 0.6 | 25–45 | 6.71 ± 0.39 |
a
n, number of experiments (the numbers in parentheses correspond to experiments previously reported by Koutsoumanis and Nychas [20] and used as part of the total database); N0, initial population; Nmax, maximum population (log10 CFU/g); μmax, maximum specific growth rate; Ns, population at the time of organoleptical rejection as estimated from the logistic equation by setting time equal to shelf life.
b
Ranges (minimum to maximum) are given where applicable.
c
Values are means (± the standard deviation where applicable).