Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 64: Issue 1
Thermal Characterization of Warifteine by Means of TG and a DSC Photovisual System
Authors:
C. Aragão UFPB Laboratório de Tecnologia Farmacêutica Campus I, João Pessoa Paraíba CEP 59059-900 Brasil Campus I, João Pessoa Paraíba CEP 59059-900 Brasil

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

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

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Pages:
185–191
Online Publication Date:
02 Nov 2004
Publication Date:
01 Apr 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1011593214548
Keywords:
DSC photovisual; TG; warifteine
Restricted access

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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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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