Variations in Oxidative Stability of Walnut Oil with Rosmarinic Acid Added under Different Ultraviolet Radiations

Table 1

DPPH free radical scavenging rate and MDA content of each sample under different conditions.

DPPH (%)

MDA

UV-A

UV-B

UV-C

UV-A

UV-B

UV-C

0 d

15 d

0 d

3 d

6 d

9 d

12 d

3 d

6 d

9 d

12 d

3 d

6 d

9 d

12 d

300 μW/cm^2 blank

56.81 ± 0.68

41.57 ± 1e

32.54 ± 0.41f

37.49 ± 0.53g

4.87 ± 0.09

5.64 ± 0.07a

8.77 ± 0.25a

10.88 ± 0.26a

16.44 ± 0.26a

5.79 ± 0.30a

9.13 ± 0.30a

12.72 ± 0.34a

17.42 ± 0.54a

5.42 ± 0.33a

9.01 ± 0.08a

12.06 ± 0.21a

16.98 ± 0.38a

300 μW/cm^2 0.1 mg/g RA

45.66 ± 1.14d

43.33 ± 0.58d

43.89 ± 0.56e

4.99 ± 0.2b

5.63 ± 0.09b

7.94 ± 0.22b

9.04 ± 0.19d

5.03 ± 0.17b

6.27 ± 0.43b

7.39 ± 0.50c

10.55 ± 0.39d

5.24 ± 0.27ab

5.89 ± 0.24bc

7.54 ± 0.33bc

10.17 ± 0.42d

300 μW/cm^2 0.2 mg/g RA

53.77 ± 1.04b

48.76 ± 0.78bc

50.43 ± 0.61c

4.9 ± 0.16b

4.93 ± 0.04c

7.28 ± 0.22cd

8.92 ± 0.30d

5.01 ± 0.14b

4.98 ± 0.07c

6.53 ± 0.11d

10.02 ± 0.15de

5.11 ± 0.07ab

5.56 ± 0.43c

7.04 ± 0.17c

9.72 ± 0.24de

300 μW/cm^2 0.2 mg/g BHT

49.58 ± 0.61c

47.95 ± 1.37c

49.04 ± 0.30cd

5.17 ± 0.09b

5.74 ± 0.05b

7.14 ± 0.14de

11.26 ± 0.25c

5.22 ± 0.15b

5.93 ± 0.22b

7.44 ± 0.45c

12.22 ± 0.31c

5.05 ± 0.16ab

5.7 ± 0.23c

7.32 ± 0.48c

11.09 ± 0.15c

150 μW/cm^2 blank

43.89 ± 0.97d

35.79 ± 1.47e

39.21 ± 1.32f

5.11 ± 0.15b

5.54 ± 0.10b

7.62 ± 0.07bc

11.96 ± 0.11b

5.17 ± 0.18b

6.33 ± 0.16b

8.29 ± 0.16b

13.47 ± 0.23b

5.39 ± 0.16a

6.19 ± 0.33b

7.93 ± 0.26b

13.14 ± 0.41b

150 μW/cm^2 0.1 mg/g RA

49.07 ± 1.57c

48.99 ± 0.36bc

48.46 ± 0.99d

4.97 ± 0.33b

4.96 ± 0.18c

6.37 ± 0.16f

9.27 ± 0.27d

4.93 ± 0.11b

4.92 ± 0.06c

6.05 ± 0.66de

9.91 ± 0.29de

4.95 ± 0.10b

4.99 ± 0.23d

6.42 ± 0.15d

9.36 ± 0.49e

150 μW/cm^2 0.2 mg/g RA

54.34 ± 1.44a

52.34 ± 0.82a

53.97 ± 1.53a

4.93 ± 0.04b

4.89 ± 0.06c

6.03 ± 0.05f

9.03 ± 0.22d

4.88 ± 0.34b

4.88 ± 0.30c

5.62 ± 0.34e

8.94 ± 0.19f

4.88 ± 0.12b

4.93 ± 0.11d

5.83 ± 0.41e

8.73 ± 0.16f

150 μW/cm^2 0.2 mg/g BHT

53.88 ± 1.24a

49.5 ± 1.09b

52.33 ± 0.70b

4.98 ± 0.11b

5.02 ± 0.17c

6.84 ± 0.41e

9.22 ± 0.06d

5 ± 0.13b

5.15 ± 0.08c

6.74 ± 0.44cd

9.74 ± 0.60e

4.98 ± 0.24b

5.07 ± 0.21d

6.26 ± 0.27de

9.39 ± 0.13e

Note: using Duncan’s algorithm, the same letter in the same column means no significant difference, .