Table 1 Antimutagenicity of the sutherlandia extracts on the four S. typhimurium tester strains. Inhibition expressed as % inhibition ± STD

MeOH

18.4 ± 1.6^c

(−) 48.9 ± 12.7^c#

(−) 16.2 ± 5.6^c#

72.0 ± 15.1^c

38.1 ± 6.3^b

17.0 ± 3.6^b

68.1 ± 3.7^b

97.2 ± 1.4^b

85.4 ± 3.7^a

91.4 ± 1.6^a

83.2 ± 5.8^a

114.5 ± 3.1^a

EA

26.0 ± 3.3^c

41.8 ± 2.5^c

57.2 ± 5.8^c

98.6 ± 3.9^c

64.8 ± 4.9^b

69.7 ± 2.8^b

75.5 ± 4.2^b

109.0 ± 4.7^b

90.2 ± 3.2^a

91.8 ± 3.7^a

95.6 ± 3.9^a

127.3 ± 10.4^a

9-AA

(0.02 μg/plate)

2-AAF

(5 μg/plate)

AFB₁

(40 μg/plate)

CHP

(0.1 μg/plate)

369 ± 5

256 ± 6

373 ± 5

997 ± 99