Plant phenols have been reported to have inhibitory effects on glutathions S-transferase (GST) activity when 1-chloro 2,4-dinitrobenzene (CDNB) is used as a work was aimed to study on the effects of curcumin and its analogues on liver GST activity of phenobarbital and Betha-naptoflavone-treated rats. The product of the inhibition of GST-activity on the conjugation reaction between glatathione a…