The significance was tested by Student t- test (p < 0.01) vs control group.
aValues represent mean ± SD based on two experiments.
bThe values in parenthesis are the inhibition rates (%).
Inhibition (%inhibition) = 100 - (R1/R0 x 100), where
R
1 is the number of His+ revertant/plate of plates exposed to mutagens and Sesbania javanica Miq. flower extract
R
0 is the number of His+ revertant /plate in the positive control.
The number of spontaneous revertants was substracted from the numerator and denominator.