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. 2022 Jan 21;11(2):204. doi: 10.3390/antiox11020204

Table 5.

Kinetic parameters of Equation (6), standard deviation (ε), and coefficient of determination (R2) for hydroxytyrosol content (mg/kg) and antioxidant capacity (mg Trolox eq/kg), and calculated values for k and CAm at operating temperatures.

Antioxidant Capacity
Hydroxytyrosol FRAP DPPH
CA0 35.91 312.25 165.54
a −0.1327 −2.1673 −1.0804
b 59.771 779.44 405.45
k0, d−1 0.6708 2.3784 1897.78
Ea, kJ/mol 5.862 4.436 20.179
ε 1.24 8.74 3.55
R2 0.964 0.981 0.988
Temperature, °C K, d−1
25 0.0630 0.3973 0.5534
35 0.0681 0.4211 0.7207
45 0.0731 0.4446 0.9231
Temperature, °C CAm
25 20.21 133.28 83.32
35 18.88 111.60 72.52
45 17.55 89.93 61.71