Table 6. Activation energy and thermal properties of carotenoid-enriched soybean oil
| Oil sample1) | Activation energy | Thermal property3) |
| A2) (×10−3 mPa ․ s) | Ea (kJ/mol) | R2 | To (°C) | Tp (°C) | Te (°C) | Enthalpy (J/g) |
| Control | 1.17 | 26.37 | 0.9980 | 151.93±8.674) | 193.94±2.62 | 227.09±3.64 | 24.43±5.42 |
| CESO | 1.14 | 26.47 | 0.9982 | 149.53±3.41 | 193.29±3.48 | 229.77±2.32 | 19.92±14.81 |
Control, non-treated soybean oil; CESO, carotenoid-enriched soybean oil prepared from persimmon peels by ultrasonic extraction (62°C, 32 min, persimmon peel to oil ratio of 1:3.1).
A (pro-exponential factor), Ea(activation energy) obtained from Arrhenius equation (Eq. 4) for the oil samples.
To, onset temperature; Tp, peak temperature; Tc, end temperature.
Values represent mean±SD (n=3).