Table 3.
Parameters for survival curves of S. cerevisiae in natural orange juice (pH: 3.97; °Brix: 11.6) at 50 °C, supplemented with CLEO and subjected to US treatment
| Treatments | “Log-linear + shoulder” model | Weibull model | ||||
|---|---|---|---|---|---|---|
| kmax (min−1) | Sl (min) | R^2 | δ | ρ | R^2 | |
| 50 °C | 0.17 ± 0.04 | 22.25 ± 2.30 | 0.95 | 35.15 ± 2.27 | 2.69 ± 0.78 | 0.95 |
| 50 °C + 650 ppm | 0.18 ± 0.03 | 6.41 ± 4.18 | 0.97 | 18.86 ± 2.69 | 1.29 ± 0.30 | 0.96 |
| 50 °C + US | 0.14 ± 0.04 | 0.54 ± 8.43 | 0.93 | 16.67 ± 4.27 | 0.99 ± 0.32 | 0.93 |
| #50 °C + 650 ppm + US | – | – | – | 3.12 ± 0.90 | 0.61 ± 0.07 | 0.99 |
The values for the different constants were calculated by GInaFiT (Geeraerd et al. 2005). All values are expressed as the mean of three replications ± SD. #50 °C + 650 ppm + US: it was obtained a negative value for the shoulder length Sl. So, model with shoulder is unlikely for this data