Table 4.

Kinetic parameters (k at 180 °C) calculated from the initial oxidation temperature (IOT) under different heating rates.

Oil Samples	Treatment	Ea (kJ/mol)	A	k	Linear Regression Equation	R2
SO	Blank	84.81	2.12 × 109	0.90	y = −4659x + 11.02	0.977
	RE	108.23	2.69 × 1012	0.35	y = −5945x + 14.23	0.991
	BHA + BHT	99.36	1.14 × 1011	0.40	y = −5458x + 12.82	0.980
RO	Blank	84.63	2.50 × 109	0.44	y = −4649x + 11.09	0.987
	RE	103.82	2.03 × 1011	0.22	y = −5703x + 13.09	0.993
	BHA + BHT	91.84	2.64 × 1010	0.68	y = −5045x + 12.15	0.979
CSO	Blank	65.88	3.69 × 108	0.94	y = −3619x + 9.15	0.988
	RE	93.84	4.49 × 1010	0.68	y = −5155x + 12.39	0.986
	BHA + BHT	74.58	4.70 × 108	1.19	y = −4097x + 10.31	0.979
RBO	Blank	88.69	5.09 × 109	0.30	y = −4872x + 11.42	0.995
	RE	109.08	9.49 × 1011	0.25	y = −5992x + 13.78	0.996
	BHA + BHT	93.86	2.30 × 1010	0.35	y = −5161x + 12.10	0.982
CO	Blank	63.64	1.32 × 108	0.61	y = −3496x + 8.69	0.994
	RE	79.24	7.01 × 108	0.51	y = −4353x + 10.51	0.965
	BHA + BHT	79.23	9.25 × 108	0.68	y = −4352x + 10.63	0.984

Note: Ea, activation energy; A, pre-exponential factor; k, reaction rate constant. SO, soybean oil; RO, rapeseed oil; CSO, cottonseed oil; RBO, rice bran oil; CO, camellia oil.