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Stable, Controlled-Release Organophosphorous Pesticides Entrapped in β-Cyclodextrin

I. Solid state characteristics

  • Special Publication of Cyclodextrins and Their Inclusion Complexes
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Journal of Thermal Analysis and Calorimetry Aims and scope Submit manuscript

Abstract

The molecular encapsulation of selected volatile organophosphorous pesticides (Malathion, DDVP, Sumithion, Chlorpyriphos, and Sulprofos) results in the improvement of the solid state properties such as flowability, wettability, and thermal stability. Detailed themoanalytical data indicate that the formulations in dry solid state effectively preserve their entrapped pesticide content even at elevated temperature. The dissolution of the cyclodextrin-entrapped pesticides was found to greatly surpass that of the corresponding starch-adsorbates. The molecular entrapment of the studied organophosphorous pesticides moreover provided a method to significantly mask the unpleasant pesticide odour, enabling their indoor uses.

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References

  1. J. Szejtli, Cyclodextrin Technology, Kluwer Academic Publishers Dordrecht, 1988, p. 187–188.

    Google Scholar 

  2. O. D. Dailey, J. M. Bland and J. B. Task-Morell, J. Agric. Food Chem., 41 (1993) 1767.

    Article  CAS  Google Scholar 

  3. L. Szente, Preparation of Cyclodextrin Complexes in: Comprehensive Supramolecular Chemistry, Vol. 3. J. Szejtli and T. Osa (Eds), Pergamon Press, 1996, p. 243–253.

  4. Cs. Novák, A. Végh, S. Marokházi, G. Pokol and L. Szente, J. Thermal Anal., 41 (1994) 181.

    Article  Google Scholar 

  5. A. F. Kydonieus, Controlled Release Technologies, Methods, Theory and Applications Vol. IL, CRC. Press Inc. Boca Raton, FL 1980, p. 95.

    Google Scholar 

  6. W. Grimm, Basic Principles of Stability Testing, in Stability Testing in the EC, USA and Japan, Regulatory Requirements, W. Grimm and K. Krummen (Eds), Wissenschaftliche Verlagsgesellschaft mbH, Stuttgart, 1993, p. 17–44.

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Authors and Affiliations

  1. CYCLOLAB, Cyclodextrin Research and Development Laboratories, Ltd., H-1525, Budapest, P. O. Box 435, Hungary

    L. Szente

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  1. L. Szente
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Szente, L. Stable, Controlled-Release Organophosphorous Pesticides Entrapped in β-Cyclodextrin. Journal of Thermal Analysis 51, 957–963 (1998). https://doi.org/10.1007/BF03341475

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  • DOI: https://doi.org/10.1007/BF03341475

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