Table 5.

Extinction coefficient at 232 and 270 nm in initial oils and after 7 days of accelerated photo-oxidation tests. Values are the mean of three independent measurements ± SD.

Sample	t0		t7
	K232	K270	K232	K270
Oil 1	0.86 ± 0.08	0.69 ± 0.07	0.86 ± 0.03	0.79 ± 0.05
Oil 2	0.84 ± 0.07	0.73 ± 0.04	0.88 ± 0.04	0.81 ± 0.06
Oil 3	0.84 ± 0.03	0.51 ± 0.02	0.88 ± 0.04	0.54 ± 0.04
Oil 4	0.84 ± 0.01	0.39 ± 0.05	0.87 ± 0.02	0.42 ± 0.05
Oil 5	0.82 ± 0.08	0.34 ± 0.01	0.82 ± 0.03	0.38 ± 0.02 *
Oil 6	0.83 ± 0.03	0.40 ± 0.04	0.87 ± 0.02	0.44 ± 0.03
Oil 7	0.85 ± 0.04	0.54 ± 0.07	0.85 ± 0.03	0.56 ± 0.04
Oil 8	0.83 ± 0.03	0.65 ± 0.06	0.82 ± 0.04	0.70 ± 0.03
Oil 9	0.81 ± 0.02	0.46 ± 0.05	0.83 ± 0.03	0.47 ± 0.02
Oil 10	0.81 ± 0.05	0.50 ± 0.05	0.86 ± 0.03	0.63 ± 0.02 *
Oil 11	0.86 ± 0.02	0.50 ± 0.04	0.87 ± 0.02	0.60 ± 0.02 *
Oil 12	0.82 ± 0.01	0.47 ± 0.04	0.89 ± 0.04 *	0.54 ± 0.03
Oil 13	0.83 ± 0.08	0.36 ± 0.02	0.88 ± 0.07	0.43 ± 0.01 *

Statistical significance is calculated by Student’s t-test analysis: * p < 0.05 Extinction coefficient (232 or 270 nm) in initial oils vs. after 7 days of accelerated photo-oxidation tests.