Influence of Storage Conditions on the Stability of Vitamin D₃ and Kinetic Study of the Vitamin Degradation in Fortified Canola Oil during the Storage

Table 4

Effect of storage conditions on the activation energy (E_a), reaction rate constant (k), Q₁₀, and half-life of vitamin D₃ in LC and HC.

Oil	Model	Temperature (°C)	K1 × 10^3 (day^−1)	R^2	T1/2 (days)	Q10	Ea (kJ·K^−1·mol^−1)
LC	A	27 ± 3	5.9	0.97	117.48
	B	27 ± 3	5.2	0.97	133.29
	C	27 ± 3	1.7	0.84	407.73		8.22
	D	27 ± 3	1.6	0.8	433.21		7.97
	E	4 ± 1	1.2	0.9	577.62	1.16
	F	4 ± 1	1.2	0.81	577.62	1.13
HC	A	27 ± 3	7.2	0.92	96.27
	B	27 ± 3	6.3	0.95	110.02
	C	27 ± 3	4.3	0.82	161.19		25.71
	D	27 ± 3	4.2	0.85	165.0		28.53
	E	4 ± 1	1.7	0.82	407.73	1.49
	F	4 ± 1	1.5	0.71	462.09	1.55

Since we had no models in the refrigerator (4°C) which were exposed to light, Q₁₀ and E_a just were calculated for models E and F that their parallel in RT was models C and D, respectively.