Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 56: Issue 3
Thermal Behaviour of Some Terpenoids
Authors:
R. Macêdo Laboratório de Tecnologia Farmacêutica/UFPB Joăo Pessoa, Paraíba Brazil Joăo Pessoa, Paraíba Brazil

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J. Barbosa-Filho Laboratório de Tecnologia Farmacêutica/UFPB Joăo Pessoa, Paraíba Brazil Joăo Pessoa, Paraíba Brazil

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E. da Costa Laboratório de Tecnologia Farmacêutica/UFPB Joăo Pessoa, Paraíba Brazil Joăo Pessoa, Paraíba Brazil

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A. de Souza Laboratório de Tecnologia Farmacêutica/UFPB Joăo Pessoa, Paraíba Brazil Joăo Pessoa, Paraíba Brazil

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Pages:
1353–1357
Online Publication Date:
16 Aug 2006
Publication Date:
01 Nov 1999
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010110624198
Keywords:
DSC; terpenoids; TG; thermal behaviour
Restricted access

Abstract  

The terpenoids acetyl sitosterol, lupeol, acetyl diosgenin and stigmasterol were studied. Comparison of the thermogravimetric curves and the activation energies of the terpenoids suggested the following sequence of thermal stability: acetyl sitosterol < acetyl diosgenin < lupeol < stigmasterol. The DSC curves allowed determination of the melting points and the degrees of purity. Comparison of the TG and DSC curves revealed the presence of phase transitions without mass loss that were attributed to rearrangements in the terpenoid molecules.

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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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