Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network
Main Author: | |
---|---|
Publication Date: | 2020 |
Other Authors: | , , , , |
Format: | Article |
Language: | eng |
Source: | Journal of the Brazilian Chemical Society (Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000300512 |
Summary: | Thermal analysis can be used to determine shelf-life and kinetic parameters in pharmaceutical systems. This work investigates the kinetic of lumefantrine thermal decomposition, an antimalarial, using non-isothermal and isothermal experimental data. The non-isothermal conditions are analyzed applying Vyazovkin method, while isothermal conditions employ models fitting procedure and artificial neural network. Lumefantrine was characterized by powder X-ray diffraction and Fourier transform infrared spectroscopy. The initial stage of lumefantrine thermal decomposition, about 5% of conversion, corresponds to the loss of chlorine and hydroxyl, being correctly predicted by the neural network as a complex event. At room temperature, the D3 model is appropriate to describe the process, once the half-life time is 19 months, in agreement with manufacturer. Isoconversional model determined the activation energy along the whole process while isothermal methodology determined the global value considering the entire process. The results provide important information for the pharmaceutical industry to assay levels of acceptable lumefantrine contents. |
id |
SBQ-2_6237e207d8aa9e4a0a0a943d89c1c173 |
---|---|
oai_identifier_str |
oai:scielo:S0103-50532020000300512 |
network_acronym_str |
SBQ-2 |
network_name_str |
Journal of the Brazilian Chemical Society (Online) |
repository_id_str |
|
spelling |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Networksolid thermal stabilityantimalarial drugkinetic tripletthermogravimetrymultilayer perceptron networkThermal analysis can be used to determine shelf-life and kinetic parameters in pharmaceutical systems. This work investigates the kinetic of lumefantrine thermal decomposition, an antimalarial, using non-isothermal and isothermal experimental data. The non-isothermal conditions are analyzed applying Vyazovkin method, while isothermal conditions employ models fitting procedure and artificial neural network. Lumefantrine was characterized by powder X-ray diffraction and Fourier transform infrared spectroscopy. The initial stage of lumefantrine thermal decomposition, about 5% of conversion, corresponds to the loss of chlorine and hydroxyl, being correctly predicted by the neural network as a complex event. At room temperature, the D3 model is appropriate to describe the process, once the half-life time is 19 months, in agreement with manufacturer. Isoconversional model determined the activation energy along the whole process while isothermal methodology determined the global value considering the entire process. The results provide important information for the pharmaceutical industry to assay levels of acceptable lumefantrine contents.Sociedade Brasileira de Química2020-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000300512Journal of the Brazilian Chemical Society v.31 n.3 2020reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20190211info:eu-repo/semantics/openAccessMarques,Maria B. F.Araujo,Bárbara C. R.Fernandes,ChristianYoshida,Maria I.Mussel,Wagner N.Sebastião,Rita C. O.eng2020-02-27T00:00:00Zoai:scielo:S0103-50532020000300512Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2020-02-27T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network |
title |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network |
spellingShingle |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network Marques,Maria B. F. solid thermal stability antimalarial drug kinetic triplet thermogravimetry multilayer perceptron network |
title_short |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network |
title_full |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network |
title_fullStr |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network |
title_full_unstemmed |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network |
title_sort |
Kinetics of Lumefantrine Thermal Decomposition Employing Isoconversional Models and Artificial Neural Network |
author |
Marques,Maria B. F. |
author_facet |
Marques,Maria B. F. Araujo,Bárbara C. R. Fernandes,Christian Yoshida,Maria I. Mussel,Wagner N. Sebastião,Rita C. O. |
author_role |
author |
author2 |
Araujo,Bárbara C. R. Fernandes,Christian Yoshida,Maria I. Mussel,Wagner N. Sebastião,Rita C. O. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Marques,Maria B. F. Araujo,Bárbara C. R. Fernandes,Christian Yoshida,Maria I. Mussel,Wagner N. Sebastião,Rita C. O. |
dc.subject.por.fl_str_mv |
solid thermal stability antimalarial drug kinetic triplet thermogravimetry multilayer perceptron network |
topic |
solid thermal stability antimalarial drug kinetic triplet thermogravimetry multilayer perceptron network |
description |
Thermal analysis can be used to determine shelf-life and kinetic parameters in pharmaceutical systems. This work investigates the kinetic of lumefantrine thermal decomposition, an antimalarial, using non-isothermal and isothermal experimental data. The non-isothermal conditions are analyzed applying Vyazovkin method, while isothermal conditions employ models fitting procedure and artificial neural network. Lumefantrine was characterized by powder X-ray diffraction and Fourier transform infrared spectroscopy. The initial stage of lumefantrine thermal decomposition, about 5% of conversion, corresponds to the loss of chlorine and hydroxyl, being correctly predicted by the neural network as a complex event. At room temperature, the D3 model is appropriate to describe the process, once the half-life time is 19 months, in agreement with manufacturer. Isoconversional model determined the activation energy along the whole process while isothermal methodology determined the global value considering the entire process. The results provide important information for the pharmaceutical industry to assay levels of acceptable lumefantrine contents. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000300512 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000300512 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.21577/0103-5053.20190211 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.31 n.3 2020 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318182642483200 |