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Enantioselective Inhibition of Dichlorprop on Catalase


The enantioselectivity interaction of 2,4-dichlorprop (DCPP) and catalase were studied, and it was further evaluated with the presence of humus. Both of rac-DCPP and R-DCPP can inhibit the activity of catalase with the concentrations of 0.05–80 mg L−1, the inhibitory type of rac-DCPP was uncompetitive, and of R-DCPP was complex. The presence of humic acid has changed the inhibitory ability of DCPP on catalase, the inhibition of rac-DCPP disappeared and the inhibition type of R-DCPP mainly became uncompetitive. These results suggest that inhibition of chiral DCPP on catalase is enantioselective.

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This study was financially supported by the Natural Science Foundation of Zhejiang Province, China (Y5100253), and the National Natural Science Foundation of China (No. 21007058).

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Correspondence to Yun Ma.

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Ma, Y., Jiang, J., Xu, C. et al. Enantioselective Inhibition of Dichlorprop on Catalase. Bull Environ Contam Toxicol 89, 945–949 (2012).

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  • 2,4-dichlorprop
  • Chiral herbicide
  • Catalase
  • Enantioselective