Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/42534 |
Resumo: | The drying of coffee by means of fixed layer dryers has been widely used by Brazilian coffee growers. However, high gradients of water content formed in these dryers are frequently reported, as well as the presence of microorganisms. The present work was developed with the purpose of monitoring the performance of these dryers and their effect on the final quality of the product, comparing to an adaptation made in conventional fixed layer dryers. During drying, the following characteristics were monitored at various points in the drying chamber: temperature of drying air, intergranular air, exhaust air, and ambient air; relative humidity of the drying air, the ambient air, and the exhaust air and the water content of the product at different points and heights in the drying chamber (0.12; 0.36 and 0.60 m). Among the dry product evaluations, color analysis and microbiological analysis were performed. According to the results obtained, drying with inversion of the airflow resulted in a water content gradient of 0.4% (b.u.), while conventional drying caused a gradient of 8% (b.u.). Regarding the color of the product in the different drying managements, drying with airflow inversion resulted in lighter products. For the microbiological analysis, fungi of the genera Cladosporium, Fusarium, and Aspergillus were found, among others. The average incidence of these fungi was higher in conventional drying samples than in fixed layer drying with inversion of airflow. |
id |
UFLA_edd55fdee5166da343f4b011a472ae28 |
---|---|
oai_identifier_str |
oai:localhost:1/42534 |
network_acronym_str |
UFLA |
network_name_str |
Repositório Institucional da UFLA |
repository_id_str |
|
spelling |
Fixed bed dryer: an adaptation to improve drying of natural coffee in BrazilFixed bed dryer: an adaptation to improve drying of natural coffee in BrazilSecador de capa fija: una adaptación para mejorar el secado del café natural en BrasilInversão do fluxo de arSecadores industriaisCafé - SecagemAirflow inversionIndustrial dryersCoffee - DryingThe drying of coffee by means of fixed layer dryers has been widely used by Brazilian coffee growers. However, high gradients of water content formed in these dryers are frequently reported, as well as the presence of microorganisms. The present work was developed with the purpose of monitoring the performance of these dryers and their effect on the final quality of the product, comparing to an adaptation made in conventional fixed layer dryers. During drying, the following characteristics were monitored at various points in the drying chamber: temperature of drying air, intergranular air, exhaust air, and ambient air; relative humidity of the drying air, the ambient air, and the exhaust air and the water content of the product at different points and heights in the drying chamber (0.12; 0.36 and 0.60 m). Among the dry product evaluations, color analysis and microbiological analysis were performed. According to the results obtained, drying with inversion of the airflow resulted in a water content gradient of 0.4% (b.u.), while conventional drying caused a gradient of 8% (b.u.). Regarding the color of the product in the different drying managements, drying with airflow inversion resulted in lighter products. For the microbiological analysis, fungi of the genera Cladosporium, Fusarium, and Aspergillus were found, among others. The average incidence of these fungi was higher in conventional drying samples than in fixed layer drying with inversion of airflow.A secagem de café por meio de secadores de camada fixa tem sido amplamente utilizada por cafeicultores brasileiros. Entretanto, frequentemente são relatados elevados gradientes de teor de água formados nestes secadores, bem como o aparecimento de microrganismos na massa de café. Desenvolveu-se o presente trabalho com a finalidade de monitorar a performance destes secadores e seu efeito na qualidade final do produto, comparando à uma adaptação feita em secadores de camada fixa convencional. Durante a secagem foram monitorados em diversos pontos na câmara de secagem as seguintes características: temperatura do ar de secagem, do ar intergranular, do ar de exaustão e do ar ambiente; umidade relativa do ar de secagem, do ar ambiente e do ar de exaustão e teor de água do produto em diferentes pontos e alturas na câmara de secagem (0,12; 0,36 e 0,60 m). Dentre as avaliações do produto seco, foram realizadas: análise de cor e análise microbiológica. De acordo com os resultados obtidos, a secagem com inversão do fluxo de ar resultou em um gradiente de teor de água de 0,4% (b.u.), enquanto a secagem convencional ocasionou um gradiente de 8% (b.u.). Em relação à coloração do produto nos diferentes manejos de secagem, a secagem com inversão resultou em produtos mais claros. Para a análise microbiológica, foram encontrados fungos dos gêneros Cladosporium, Fusarium e Aspergillus, dentre outros. Sendo que a média da incidência destes fungos foi maior nas amostras da secagem convencional que na secagem de camada fixa com inversão do fluxo do ar.Research, Society and Development2020-08-21T16:34:22Z2020-08-21T16:34:22Z2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfOLIVEIRA, F. da S. de et al. Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil. Research, Society and Development, Vargem Grande Paulista, v. 9, n. 7, e34973197, 2020. DOI: http://dx.doi.org/10.33448/rsd-v9i7.3197.http://repositorio.ufla.br/jspui/handle/1/42534Research, Society and Developmentreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessOliveira, Filipe da Silva deAndrade, Ednilton Tavares deMoreira, Kátia SoaresSouza, Sara Maria Chalfoun deBorém, Flávio Meirapor2023-05-02T18:13:00Zoai:localhost:1/42534Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-02T18:13Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil Secador de capa fija: una adaptación para mejorar el secado del café natural en Brasil |
title |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil |
spellingShingle |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil Oliveira, Filipe da Silva de Inversão do fluxo de ar Secadores industriais Café - Secagem Airflow inversion Industrial dryers Coffee - Drying |
title_short |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil |
title_full |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil |
title_fullStr |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil |
title_full_unstemmed |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil |
title_sort |
Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil |
author |
Oliveira, Filipe da Silva de |
author_facet |
Oliveira, Filipe da Silva de Andrade, Ednilton Tavares de Moreira, Kátia Soares Souza, Sara Maria Chalfoun de Borém, Flávio Meira |
author_role |
author |
author2 |
Andrade, Ednilton Tavares de Moreira, Kátia Soares Souza, Sara Maria Chalfoun de Borém, Flávio Meira |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Oliveira, Filipe da Silva de Andrade, Ednilton Tavares de Moreira, Kátia Soares Souza, Sara Maria Chalfoun de Borém, Flávio Meira |
dc.subject.por.fl_str_mv |
Inversão do fluxo de ar Secadores industriais Café - Secagem Airflow inversion Industrial dryers Coffee - Drying |
topic |
Inversão do fluxo de ar Secadores industriais Café - Secagem Airflow inversion Industrial dryers Coffee - Drying |
description |
The drying of coffee by means of fixed layer dryers has been widely used by Brazilian coffee growers. However, high gradients of water content formed in these dryers are frequently reported, as well as the presence of microorganisms. The present work was developed with the purpose of monitoring the performance of these dryers and their effect on the final quality of the product, comparing to an adaptation made in conventional fixed layer dryers. During drying, the following characteristics were monitored at various points in the drying chamber: temperature of drying air, intergranular air, exhaust air, and ambient air; relative humidity of the drying air, the ambient air, and the exhaust air and the water content of the product at different points and heights in the drying chamber (0.12; 0.36 and 0.60 m). Among the dry product evaluations, color analysis and microbiological analysis were performed. According to the results obtained, drying with inversion of the airflow resulted in a water content gradient of 0.4% (b.u.), while conventional drying caused a gradient of 8% (b.u.). Regarding the color of the product in the different drying managements, drying with airflow inversion resulted in lighter products. For the microbiological analysis, fungi of the genera Cladosporium, Fusarium, and Aspergillus were found, among others. The average incidence of these fungi was higher in conventional drying samples than in fixed layer drying with inversion of airflow. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-08-21T16:34:22Z 2020-08-21T16:34:22Z 2020 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
OLIVEIRA, F. da S. de et al. Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil. Research, Society and Development, Vargem Grande Paulista, v. 9, n. 7, e34973197, 2020. DOI: http://dx.doi.org/10.33448/rsd-v9i7.3197. http://repositorio.ufla.br/jspui/handle/1/42534 |
identifier_str_mv |
OLIVEIRA, F. da S. de et al. Fixed bed dryer: an adaptation to improve drying of natural coffee in Brazil. Research, Society and Development, Vargem Grande Paulista, v. 9, n. 7, e34973197, 2020. DOI: http://dx.doi.org/10.33448/rsd-v9i7.3197. |
url |
http://repositorio.ufla.br/jspui/handle/1/42534 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Research, Society and Development |
publisher.none.fl_str_mv |
Research, Society and Development |
dc.source.none.fl_str_mv |
Research, Society and Development reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
_version_ |
1807835163767341056 |