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THE ANTI-ESTERASE ACTIVITY OF PARATHION AND SOME RELATED ORGANOPHOSPHORUS COMPOUNDS |
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| Authors: | A. STRINGER A. H. FIELDING |
| Affiliation: | Long Ashton Research Station, University of Bristol |
| Abstract: | The in vitro activity of cholinesterase and acetylesterase of two insect species- Locusta migratoria migratorioides R. &F. and Calandra granaria L.—has been examined. There appear to be two distinct enzymes present, and in both insects their activities are at comparable levels and their inhibition by the organophosphorus compounds examined are also similar. Compounds possessing the phosphoryl group have high inhibitory activity and those with the thiophosphoryl group have low activity in vitro. |
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