k1                               k2 Temp (oC)      t1/2 (min)        Ea (kJ/mol)      ΔG (kJ/mol)  ΔH (KJ/mol)      ΔS (KJ/mol)  D        t1/2(min)  Ea(kJ/mol)  ΔG(kJ/mol)   ΔH(KJ/mol)       ΔS (KJ/mol)          D      50                  3.43             2160              -304.12           -525.42          -221.30     35.4       3.94          1270             -1230.61         -1415.42         -184.81             59.1      60                  2.62             2160               -387.23          -608.56         -221.33     15.9       3.59          1270            -1313.72          -1498.56         -184.84             41.9      70                  2.28          2160                  -470.34           -691.70         -221.36    11.2       3.51          1270            -1396.83          -1581.70          -184.87             38.4      80                 1.90         2160                    -552.95          -774.84           -221.39     7.7       3.01          1270            -1479.94           -1664.84         -184.90             23.3                                                z-value = 8.78                                                     z-value = 11.09

Table 2: Half-life and activation parameters for the first and second phase (k1 & k2) respectively in the thermal inactivation of polyphenol oxidase.