Compd. No.

DPPH % inhibition antioxidant ± SD

150 μmol∙L−1

300 μmol∙L−1

5a

52.08 ± 0.05

55.50 ± 0.15

5b

52.20 ± 0.20

55.65 ± 0.29

5c

51.76 ± 0.21

53.39 ± 0.11

5d

51.88 ± 0.15

51.78 ± 0.08

5e

56.01 ± 0.14

59.01 ± 0.05

5f

52.85 ± 0.11

60.00 ± 0.01

6a

56.65 ± 0.25

61.77 ± 0.31

6b

53.25 ± 0.11

73.44 ± 0.05

6c

53.25 ± 0.01

55.69 ± 0.05

6d

60.01 ± 0.01

64.66 ± 0.05

6e

61.33 ± 0.13

64.55 ± 0.15

6f

71.70 ± 0.11

64.55 ± 0.15

Ascorbic acid

43.00

50.70