FFA (%) Heating temperature (°C)   P1
50 120 200 400
Heating time (h) 0 3.567 ± 0.379 3.567 ± 0.379 3.567 ± 0.379 3.567 ± 0.379 ns
0.5 3.587 ± 0.405 3.583 ± 0.390 3.597 ± 0.385 3.590 ± 0.403 ns
1 3.597 ± 0.422 3.610 ± 0.419 3.627 ± 0.410 3.623 ± 0.414 ns
2 3.660 ± 0.478 3.620 ± 0.419 3.650 ± 0.407 3.637 ± 0.411 ns
P2 ns ns ns ns  
The values are given as mean ± standard deviation
1Comparison of FFA between different heating temperatures at the same heating time
2 Comparison of FFA between different heating time at the same heating temperature
ns: No significant difference at P<0.05
Table 6: Variation of FFA of heated CPO according to the time and the temperature of heating.