Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 64: Issue 2
Thermal Characterization of Lapachol by Means of TG and DSC Coupled to a Photovisual System
Authors:
R. Macêdo Universidade Federal da Paraíba Laboratório de Tecnologia Farmacêutica Campus I João Pessoa, PB 58059-900 Brazil Campus I João Pessoa, PB 58059-900 Brazil

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T. do Nascimento Universidade Federal da Paraíba Laboratório de Tecnologia Farmacêutica Campus I João Pessoa, PB 58059-900 Brazil Campus I João Pessoa, PB 58059-900 Brazil

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Pages:
751–756
Online Publication Date:
02 Nov 2004
Publication Date:
01 May 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1011552613564
Keywords:
DSC-photovisual system; lapachol; TG
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Abstract  

Thermal characterization is proposed as analytical methodology for the purity assay of lapachol, and for determination of the quality parameters of capsules containing this molecule. The TG data revealed that lapachol is more stable in the presence of adjuvants, showing the good quality of the formulation. The kinetic parameters obtained were lower for lapachol drug than for the formulated lapachol. The DSC data demonstrated good compatibility between lapachol drug and the adjuvant in the formulated lapachol, and did not reveal impurities such as secondary products of the isolation and recrystallization processes. The data were confirmed by the DSC-photovisual findings.

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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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