Drying Kinetics of Cecropia pachystachya Leaves

Detalhes bibliográficos
Autor(a) principal: Bastos,Alefe Viana Souza
Data de Publicação: 2019
Outros Autores: Amaral,Alisson Macendo, Gomes,Flávio Henrique Ferreira, Xavier,Warlles, Resende,Osvaldo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Floresta e Ambiente
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000300139
Resumo: ABSTRACT The species Cecropia pachystachya has important medicinal purposes and its leaves have been used in pharmaceutical research, so the drying of this product may help maintaining its chemical properties and ensure safe storage. Thus, the objective of this study was to select mathematical models to represent the drying kinetics of Cecropia pachystachya leaves, determine the effective diffusion coefficient and obtain the activation energy during drying at different temperatures. Leaves were dried in an oven under five temperature conditions (40, 50, 60 and 70 °C), until reaching hygroscopic equilibrium moisture content. Among the models analyzed, the Logarithmic model best represented the drying kinetics at temperatures of 40 and 60 °C, whereas Modified Henderson & Pabis and Dryceleaves represented temperatures of 50 and 70 °C, respectively. The effective diffusion coefficient increased with increasing air temperature, and the activation energy for liquid diffusion in the drying process was 64.53 kJ mol-1.
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spelling Drying Kinetics of Cecropia pachystachya Leavesactivation energyembaúbaliquid diffusionmathematical modelstechnology of forest productsABSTRACT The species Cecropia pachystachya has important medicinal purposes and its leaves have been used in pharmaceutical research, so the drying of this product may help maintaining its chemical properties and ensure safe storage. Thus, the objective of this study was to select mathematical models to represent the drying kinetics of Cecropia pachystachya leaves, determine the effective diffusion coefficient and obtain the activation energy during drying at different temperatures. Leaves were dried in an oven under five temperature conditions (40, 50, 60 and 70 °C), until reaching hygroscopic equilibrium moisture content. Among the models analyzed, the Logarithmic model best represented the drying kinetics at temperatures of 40 and 60 °C, whereas Modified Henderson & Pabis and Dryceleaves represented temperatures of 50 and 70 °C, respectively. The effective diffusion coefficient increased with increasing air temperature, and the activation energy for liquid diffusion in the drying process was 64.53 kJ mol-1.Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000300139Floresta e Ambiente v.26 n.3 2019reponame:Floresta e Ambienteinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJ10.1590/2179-8087.042218info:eu-repo/semantics/openAccessBastos,Alefe Viana SouzaAmaral,Alisson MacendoGomes,Flávio Henrique FerreiraXavier,WarllesResende,Osvaldoeng2019-09-03T00:00:00Zoai:scielo:S2179-80872019000300139Revistahttps://www.floram.org/PUBhttps://old.scielo.br/oai/scielo-oai.phpfloramjournal@gmail.com||floram@ufrrj.br||2179-80871415-0980opendoar:2019-09-03T00:00Floresta e Ambiente - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Drying Kinetics of Cecropia pachystachya Leaves
title Drying Kinetics of Cecropia pachystachya Leaves
spellingShingle Drying Kinetics of Cecropia pachystachya Leaves
Bastos,Alefe Viana Souza
activation energy
embaúba
liquid diffusion
mathematical models
technology of forest products
title_short Drying Kinetics of Cecropia pachystachya Leaves
title_full Drying Kinetics of Cecropia pachystachya Leaves
title_fullStr Drying Kinetics of Cecropia pachystachya Leaves
title_full_unstemmed Drying Kinetics of Cecropia pachystachya Leaves
title_sort Drying Kinetics of Cecropia pachystachya Leaves
author Bastos,Alefe Viana Souza
author_facet Bastos,Alefe Viana Souza
Amaral,Alisson Macendo
Gomes,Flávio Henrique Ferreira
Xavier,Warlles
Resende,Osvaldo
author_role author
author2 Amaral,Alisson Macendo
Gomes,Flávio Henrique Ferreira
Xavier,Warlles
Resende,Osvaldo
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Bastos,Alefe Viana Souza
Amaral,Alisson Macendo
Gomes,Flávio Henrique Ferreira
Xavier,Warlles
Resende,Osvaldo
dc.subject.por.fl_str_mv activation energy
embaúba
liquid diffusion
mathematical models
technology of forest products
topic activation energy
embaúba
liquid diffusion
mathematical models
technology of forest products
description ABSTRACT The species Cecropia pachystachya has important medicinal purposes and its leaves have been used in pharmaceutical research, so the drying of this product may help maintaining its chemical properties and ensure safe storage. Thus, the objective of this study was to select mathematical models to represent the drying kinetics of Cecropia pachystachya leaves, determine the effective diffusion coefficient and obtain the activation energy during drying at different temperatures. Leaves were dried in an oven under five temperature conditions (40, 50, 60 and 70 °C), until reaching hygroscopic equilibrium moisture content. Among the models analyzed, the Logarithmic model best represented the drying kinetics at temperatures of 40 and 60 °C, whereas Modified Henderson & Pabis and Dryceleaves represented temperatures of 50 and 70 °C, respectively. The effective diffusion coefficient increased with increasing air temperature, and the activation energy for liquid diffusion in the drying process was 64.53 kJ mol-1.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S2179-80872019000300139
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-80872019000300139
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2179-8087.042218
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 Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro
publisher.none.fl_str_mv Instituto de Florestas da Universidade Federal Rural do Rio de Janeiro
dc.source.none.fl_str_mv Floresta e Ambiente v.26 n.3 2019
reponame:Floresta e Ambiente
instname:Universidade Federal do Rio de Janeiro (UFRJ)
instacron:UFRJ
instname_str Universidade Federal do Rio de Janeiro (UFRJ)
instacron_str UFRJ
institution UFRJ
reponame_str Floresta e Ambiente
collection Floresta e Ambiente
repository.name.fl_str_mv Floresta e Ambiente - Universidade Federal do Rio de Janeiro (UFRJ)
repository.mail.fl_str_mv floramjournal@gmail.com||floram@ufrrj.br||
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