Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica

Detalhes bibliográficos
Autor(a) principal: Krishnan,R. Yedhu
Data de Publicação: 2017
Outros Autores: Rajan,K. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Chemical Engineering
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322017000300885
Resumo: Abstract-The effects of solvent-to-feed (S) and temperature (T) on the kinetics and thermodynamics of the microwave assisted extraction (MAE) of flavonoids from dried fruits of Phyllanthus emblica using water as solvent have been studied. The flavonoid concentration - time data was analyzed using second order and diffusion models. Both the temperature and solvent-to-feed ratio influenced the initial extraction rate and equilibrium concentration. Biot numbers were found to be greater than 50, implying that the internal mass transfer was the rate controlling step in MAE. The composition of extracts obtained using MAE and conventional extraction was similar. However, the effective diffusion coefficients were doubled in MAE when compared to conventional extraction. An empirical correlation was developed to predict the kinetics of MAE as a function of solvent-to-feed ratio and temperature. The study will be of interest to food and pharmaceutical industries.
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spelling Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblicaMicrowave assisted extractionPhyllanthus emblicaflavonoidskineticsthermodynamicsAbstract-The effects of solvent-to-feed (S) and temperature (T) on the kinetics and thermodynamics of the microwave assisted extraction (MAE) of flavonoids from dried fruits of Phyllanthus emblica using water as solvent have been studied. The flavonoid concentration - time data was analyzed using second order and diffusion models. Both the temperature and solvent-to-feed ratio influenced the initial extraction rate and equilibrium concentration. Biot numbers were found to be greater than 50, implying that the internal mass transfer was the rate controlling step in MAE. The composition of extracts obtained using MAE and conventional extraction was similar. However, the effective diffusion coefficients were doubled in MAE when compared to conventional extraction. An empirical correlation was developed to predict the kinetics of MAE as a function of solvent-to-feed ratio and temperature. The study will be of interest to food and pharmaceutical industries.Brazilian Society of Chemical Engineering2017-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322017000300885Brazilian Journal of Chemical Engineering v.34 n.3 2017reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/0104-6632.20170343s20150628info:eu-repo/semantics/openAccessKrishnan,R. YedhuRajan,K. S.eng2018-02-02T00:00:00Zoai:scielo:S0104-66322017000300885Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2018-02-02T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
title Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
spellingShingle Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
Krishnan,R. Yedhu
Microwave assisted extraction
Phyllanthus emblica
flavonoids
kinetics
thermodynamics
title_short Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
title_full Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
title_fullStr Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
title_full_unstemmed Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
title_sort Influence of microwave irradiation on kinetics and thermodynamics of extraction of flavonoids from Phyllanthus emblica
author Krishnan,R. Yedhu
author_facet Krishnan,R. Yedhu
Rajan,K. S.
author_role author
author2 Rajan,K. S.
author2_role author
dc.contributor.author.fl_str_mv Krishnan,R. Yedhu
Rajan,K. S.
dc.subject.por.fl_str_mv Microwave assisted extraction
Phyllanthus emblica
flavonoids
kinetics
thermodynamics
topic Microwave assisted extraction
Phyllanthus emblica
flavonoids
kinetics
thermodynamics
description Abstract-The effects of solvent-to-feed (S) and temperature (T) on the kinetics and thermodynamics of the microwave assisted extraction (MAE) of flavonoids from dried fruits of Phyllanthus emblica using water as solvent have been studied. The flavonoid concentration - time data was analyzed using second order and diffusion models. Both the temperature and solvent-to-feed ratio influenced the initial extraction rate and equilibrium concentration. Biot numbers were found to be greater than 50, implying that the internal mass transfer was the rate controlling step in MAE. The composition of extracts obtained using MAE and conventional extraction was similar. However, the effective diffusion coefficients were doubled in MAE when compared to conventional extraction. An empirical correlation was developed to predict the kinetics of MAE as a function of solvent-to-feed ratio and temperature. The study will be of interest to food and pharmaceutical industries.
publishDate 2017
dc.date.none.fl_str_mv 2017-07-01
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=S0104-66322017000300885
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322017000300885
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-6632.20170343s20150628
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 Brazilian Society of Chemical Engineering
publisher.none.fl_str_mv Brazilian Society of Chemical Engineering
dc.source.none.fl_str_mv Brazilian Journal of Chemical Engineering v.34 n.3 2017
reponame:Brazilian Journal of Chemical Engineering
instname:Associação Brasileira de Engenharia Química (ABEQ)
instacron:ABEQ
instname_str Associação Brasileira de Engenharia Química (ABEQ)
instacron_str ABEQ
institution ABEQ
reponame_str Brazilian Journal of Chemical Engineering
collection Brazilian Journal of Chemical Engineering
repository.name.fl_str_mv Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)
repository.mail.fl_str_mv rgiudici@usp.br||rgiudici@usp.br
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