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Thermal Characterization of Warifteine by Means of TG and a DSC Photovisual System

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Abstract

This work proposes thermal characterization as analytical methodology for the identification and purity assay of warifteine, an alkaloid in Cissampelos sympodialis Eichl. Thermal and kinetic parameters were determined by means of TG and DSC photovisual studies. The TG results showed that the decomposition of warifteine in air and nitrogen atmospheres proceeds in three and four steps, respectively. The TG data allowed calculation of the kinetic parameters of warifteine. The activation energy values obtained by different methods displayed a good correlation. With the DSC photovisual system applied it is possible to detect the impurity level in warifteine after its purification.

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Authors and Affiliations

  1. Laboratório de Tecnologia Farmacêutica, UFPB, Campus I, João Pessoa, Paraíba, CEP 59059-900, Brasil

    C. F. S. Aragão, J. M. B. Filho & R. O. Macêdo

Authors
  1. C. F. S. Aragão
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  2. J. M. B. Filho
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  3. R. O. Macêdo
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Aragão, C.F.S., Filho, J.M.B. & Macêdo, R.O. Thermal Characterization of Warifteine by Means of TG and a DSC Photovisual System. Journal of Thermal Analysis and Calorimetry 64, 185–191 (2001). https://doi.org/10.1023/A:1011593214548

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  • DOI: https://doi.org/10.1023/A:1011593214548

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