Physical properties of robusta coffee berries during drying: determination and modelling
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Coffee Science (Online) |
Texto Completo: | https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972 |
Resumo: | The objective of this work was to evaluate the influence of moisture content in physical properties of coffee berries (Coffea canephora) during drying. Ripe coffee berries with initial moisture content of 1.7 (d.b.) were used, dried in an oven with forced air circulation at 40 ° C, until final moisture content of around 0.13 (d.b.) was reached. During the drying process were evaluated angle of repouse, bulk and true density, porosity and shape factors (main characteristic dimensions, equivalent diameter, sphericity, roundness and the surface-area-to-volume ratio) and analyzed by function of moisture content. It was found that moisture content greatly influences the physical properties of the analyzed coffee berries. With the exception of the surface-area-to-volume ratio, all of these properties decreased by reducing the moisture content. It was also observed that the factors tended to stabilize for the moisture content between 0.42 and 0.68 (d.b.). |
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Coffee Science (Online) |
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Physical properties of robusta coffee berries during drying: determination and modellingPropriedades físicas de frutos de café robusta durante a secagem: determinação e modelagemShape factorscoffeemoisture contentFormacaféteor de águaThe objective of this work was to evaluate the influence of moisture content in physical properties of coffee berries (Coffea canephora) during drying. Ripe coffee berries with initial moisture content of 1.7 (d.b.) were used, dried in an oven with forced air circulation at 40 ° C, until final moisture content of around 0.13 (d.b.) was reached. During the drying process were evaluated angle of repouse, bulk and true density, porosity and shape factors (main characteristic dimensions, equivalent diameter, sphericity, roundness and the surface-area-to-volume ratio) and analyzed by function of moisture content. It was found that moisture content greatly influences the physical properties of the analyzed coffee berries. With the exception of the surface-area-to-volume ratio, all of these properties decreased by reducing the moisture content. It was also observed that the factors tended to stabilize for the moisture content between 0.42 and 0.68 (d.b.).Objetivou-se, com este trabalho, avaliar a influência do teor de água nas propriedades físicas dos frutos de café da variedade robusta (Coffea canephora), durante a secagem. Foram utilizados frutos de café no estádio de maturação cereja com teor de água inicial de, aproximadamente 1,7 (b.s.), secos numa estufa com circulação forçada de ar à 40 °C, até um teor de água final de, aproximadamente 0,13 (b.s.). Durante o processo de secagem foram avaliados o ângulo de repouso, a massa específica aparente, a massa específica unitária, a porosidade e a forma do produto (dimensões características principais, diâmetro equivalente, esfericidade, circularidade e a relação superfície-volume), analisados em função do teor de água. Verificou-se que a variação do teor de água, durante a secagem, influencia as propriedades físicas dos frutos de café analisadas. Com exceção da relação superfície-volume, todas as propriedades analisadas reduziram com a redução do teor de água. Observou-se ainda que os fatores tenderam à estabilidade para teores de água entre 0,42 e 0,68 (b.s.).Editora UFLA2016-03-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/zipapplication/ziphttps://coffeescience.ufla.br/index.php/Coffeescience/article/view/972Coffee Science - ISSN 1984-3909; Vol. 11 No. 1 (2016); 65 - 75Coffee Science; Vol. 11 Núm. 1 (2016); 65 - 75Coffee Science; v. 11 n. 1 (2016); 65 - 751984-3909reponame:Coffee Science (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAporhttps://coffeescience.ufla.br/index.php/Coffeescience/article/view/972/pdf_8https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972/1504https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972/1505Copyright (c) 2016 Coffee Science - ISSN 1984-3909https://creativecommons.org/info:eu-repo/semantics/openAccessBotelho, Fernando MendesCorrea, Paulo CesarBotelho, Sílvia de Carvalho CamposElías, Guillermo Asdrúbal VargasAlmeida, Mayra Darliane Silva DinizOliveira, Gabriel Henrique Horta de2016-03-23T02:36:31Zoai:coffeescience.ufla.br:article/972Revistahttps://coffeescience.ufla.br/index.php/CoffeesciencePUBhttps://coffeescience.ufla.br/index.php/Coffeescience/oaicoffeescience@dag.ufla.br||coffeescience@dag.ufla.br|| alvaro-cozadi@hotmail.com1984-39091809-6875opendoar:2016-03-23T02:36:31Coffee Science (Online) - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Physical properties of robusta coffee berries during drying: determination and modelling Propriedades físicas de frutos de café robusta durante a secagem: determinação e modelagem |
title |
Physical properties of robusta coffee berries during drying: determination and modelling |
spellingShingle |
Physical properties of robusta coffee berries during drying: determination and modelling Botelho, Fernando Mendes Shape factors coffee moisture content Forma café teor de água |
title_short |
Physical properties of robusta coffee berries during drying: determination and modelling |
title_full |
Physical properties of robusta coffee berries during drying: determination and modelling |
title_fullStr |
Physical properties of robusta coffee berries during drying: determination and modelling |
title_full_unstemmed |
Physical properties of robusta coffee berries during drying: determination and modelling |
title_sort |
Physical properties of robusta coffee berries during drying: determination and modelling |
author |
Botelho, Fernando Mendes |
author_facet |
Botelho, Fernando Mendes Correa, Paulo Cesar Botelho, Sílvia de Carvalho Campos Elías, Guillermo Asdrúbal Vargas Almeida, Mayra Darliane Silva Diniz Oliveira, Gabriel Henrique Horta de |
author_role |
author |
author2 |
Correa, Paulo Cesar Botelho, Sílvia de Carvalho Campos Elías, Guillermo Asdrúbal Vargas Almeida, Mayra Darliane Silva Diniz Oliveira, Gabriel Henrique Horta de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Botelho, Fernando Mendes Correa, Paulo Cesar Botelho, Sílvia de Carvalho Campos Elías, Guillermo Asdrúbal Vargas Almeida, Mayra Darliane Silva Diniz Oliveira, Gabriel Henrique Horta de |
dc.subject.por.fl_str_mv |
Shape factors coffee moisture content Forma café teor de água |
topic |
Shape factors coffee moisture content Forma café teor de água |
description |
The objective of this work was to evaluate the influence of moisture content in physical properties of coffee berries (Coffea canephora) during drying. Ripe coffee berries with initial moisture content of 1.7 (d.b.) were used, dried in an oven with forced air circulation at 40 ° C, until final moisture content of around 0.13 (d.b.) was reached. During the drying process were evaluated angle of repouse, bulk and true density, porosity and shape factors (main characteristic dimensions, equivalent diameter, sphericity, roundness and the surface-area-to-volume ratio) and analyzed by function of moisture content. It was found that moisture content greatly influences the physical properties of the analyzed coffee berries. With the exception of the surface-area-to-volume ratio, all of these properties decreased by reducing the moisture content. It was also observed that the factors tended to stabilize for the moisture content between 0.42 and 0.68 (d.b.). |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03-22 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972 |
url |
https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972/pdf_8 https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972/1504 https://coffeescience.ufla.br/index.php/Coffeescience/article/view/972/1505 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Coffee Science - ISSN 1984-3909 https://creativecommons.org/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Coffee Science - ISSN 1984-3909 https://creativecommons.org/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/zip application/zip |
dc.publisher.none.fl_str_mv |
Editora UFLA |
publisher.none.fl_str_mv |
Editora UFLA |
dc.source.none.fl_str_mv |
Coffee Science - ISSN 1984-3909; Vol. 11 No. 1 (2016); 65 - 75 Coffee Science; Vol. 11 Núm. 1 (2016); 65 - 75 Coffee Science; v. 11 n. 1 (2016); 65 - 75 1984-3909 reponame:Coffee Science (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Coffee Science (Online) |
collection |
Coffee Science (Online) |
repository.name.fl_str_mv |
Coffee Science (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
coffeescience@dag.ufla.br||coffeescience@dag.ufla.br|| alvaro-cozadi@hotmail.com |
_version_ |
1789440321993572352 |