Compound No.

DPPH % inhibition anti-oxidant ± SD

150 mmol·L−1

300 mmol·L−1

6

52.09 ± 0.06

55.5 ± 0.18

7

5.80 ± 0.21

51.99 ± 0.80

8

55.11 ± 0.05

60.55 ± 0.15

9

50.76 ± 0.25

50.78 ± 0.01

10

52.85 ± 0.21

59.01 ± 0.04

12

45.08 ± 0.05

46.66 ± 0.05

13

48.85 ± 0.11

49.00 ± 0.01

16

44.33 ± 0.14

45.55 ± 0.01

17

43.89 ± 0.13

45.99 ± 0.015

Ascorbic acid

43.00

50.70