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Calculation of activation energies into two segments from nonlinear behavior shown by slopes by plotting ln tlag vs. 1000/T and ln(k) vs. 1000/T.
| Ea | Lag phase | Growth phase |
| 60 to 80°C | 0.60 kcal/mol | 9.90 kcal/mol |
| 80 to 85°C | 107.16 kcal/mol | 4.44 kcal/mol |
