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Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route

Pyrolysis of quercetin-3-O-rutinoside or rutin and its esters were investigated. Purified ester samples were prepared from lipase-catalyzed esterification of the parent flavonoid, i.e., rutin using acyl donors with different carbon chain length. X-ray diffraction revealed the presence of crystalline...

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Main Authors: Abd Razak, Nurul Nadiah, Annuar, Mohamad Suffian Mohamad
Format: Article
Published: Serbian Chemical Society 2024
Subjects:
Q Science (General)
Online Access:http://eprints.um.edu.my/47063/
https://doi.org/10.2298/JSC230624002A
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spelling my.um.eprints.470632025-01-06T01:48:02Z http://eprints.um.edu.my/47063/ Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route Abd Razak, Nurul Nadiah Annuar, Mohamad Suffian Mohamad Q Science (General) Pyrolysis of quercetin-3-O-rutinoside or rutin and its esters were investigated. Purified ester samples were prepared from lipase-catalyzed esterification of the parent flavonoid, i.e., rutin using acyl donors with different carbon chain length. X-ray diffraction revealed the presence of crystalline peaks in the rutin esters. The degradation activation energies (Ea) as a function of conversion degree alpha were determined using Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa methods, with corroborative results. Disparity in Ea implies distinct thermal degradation routes. For all studied compounds, degradation is a non-spontaneous process. The presence of acyl moieties and their corresponding carbon chain length in relation to thermodegradation profiles, Ea, entropy (Delta S) and enthalpy (Delta H) changes of the pyrolysis are discussed. Serbian Chemical Society 2024 Article PeerReviewed Abd Razak, Nurul Nadiah and Annuar, Mohamad Suffian Mohamad (2024) Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route. Journal of the Serbian Chemical Society, 89 (6). pp. 823-840. ISSN 0352-5139, DOI https://doi.org/10.2298/JSC230624002A <https://doi.org/10.2298/JSC230624002A>. https://doi.org/10.2298/JSC230624002A 10.2298/JSC230624002A
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Abd Razak, Nurul Nadiah
Annuar, Mohamad Suffian Mohamad
Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route
description Pyrolysis of quercetin-3-O-rutinoside or rutin and its esters were investigated. Purified ester samples were prepared from lipase-catalyzed esterification of the parent flavonoid, i.e., rutin using acyl donors with different carbon chain length. X-ray diffraction revealed the presence of crystalline peaks in the rutin esters. The degradation activation energies (Ea) as a function of conversion degree alpha were determined using Kissinger-Akahira-Sunose and Flynn-Wall-Ozawa methods, with corroborative results. Disparity in Ea implies distinct thermal degradation routes. For all studied compounds, degradation is a non-spontaneous process. The presence of acyl moieties and their corresponding carbon chain length in relation to thermodegradation profiles, Ea, entropy (Delta S) and enthalpy (Delta H) changes of the pyrolysis are discussed.
format Article
author Abd Razak, Nurul Nadiah
Annuar, Mohamad Suffian Mohamad
author_facet Abd Razak, Nurul Nadiah
Annuar, Mohamad Suffian Mohamad
author_sort Abd Razak, Nurul Nadiah
title Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route
title_short Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route
title_full Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route
title_fullStr Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route
title_full_unstemmed Thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route
title_sort thermochemistry of pyrolyzed rutin and its esters prepared from facile biocatalytic route
publisher Serbian Chemical Society
publishDate 2024
url http://eprints.um.edu.my/47063/
https://doi.org/10.2298/JSC230624002A
_version_ 1821001882919763968
score 13.23648

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