Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).

Detalhes bibliográficos
Autor(a) principal: Prete, Cássio Egidio Cavenaghi
Data de Publicação: 1995
Outros Autores: Abrahão, Jairo Teixeira Mendes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4298
Resumo: This paper aims to complement usual methods for coffee quality determination. The relation between electrical conductivity of coffee grains and its quality was studied. The methodology for evaluation of electrical conductivity was developed at the Seed Laboratory of the Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ-USP, Piracicaba-SP). Was recommended the use of 4 samples of 50 grains of coffee, weighed and immersed on 75ml of destilled water (in 180ml plastic glasses). Temperature was kept on 25°C for 3.5 hours, followed by shaking. The determination in electrical conductivimeter was expressed in uS/g/sample. The results showed that potassium was the most leached ion by coffee grains. The evolution of electrical conductivity follows the water absorption and potassium leaching.  
id UEL-11_327110dad3eabef6de1ef7db8ba01ad1
oai_identifier_str oai:ojs.pkp.sfu.ca:article/4298
network_acronym_str UEL-11
network_name_str Semina. Ciências Agrárias (Online)
repository_id_str
spelling Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).Condutividade elétrica dos exsudatos de grãos de café (Coffea Arábica L.). I. Desenvolvimento da metodologiaCoffeeGrain exudesElectrical conductivityQuality.CaféExsudatos do grãoCondutividade elétricaQualidade. This paper aims to complement usual methods for coffee quality determination. The relation between electrical conductivity of coffee grains and its quality was studied. The methodology for evaluation of electrical conductivity was developed at the Seed Laboratory of the Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ-USP, Piracicaba-SP). Was recommended the use of 4 samples of 50 grains of coffee, weighed and immersed on 75ml of destilled water (in 180ml plastic glasses). Temperature was kept on 25°C for 3.5 hours, followed by shaking. The determination in electrical conductivimeter was expressed in uS/g/sample. The results showed that potassium was the most leached ion by coffee grains. The evolution of electrical conductivity follows the water absorption and potassium leaching.   Com o objetivo de ampliar os procedimentos usuais para determinação da qualidade do café, estudou-se a relação entre a condutividade elétrica do exsudato de grãos de café e sua qualidade. A metodologia para avaliação da condutividade elétrica foi desenvolvida no Laboratório de Sementes do Departamento de Agricultura da Escola Superior de Agricultura "Luiz de Queiroz" em Piracicaba-SP; podendo-se recomendar a utilização de quatro amostras de 50 grãos de café, pesadas, imersas em 75ml de água destilada (no interior de copos de plástico de 180ml de capacidade) colocadas em ambiente a 25°C por 3,5 horas, seguida de agitação e leitura em condutivimetro elétrico, expressando os resultados em uS/g/amostra. Os resultados indicaram que o ion lixiviado em maior quantidade pelos grãos de café foi o potássio que se correlacionou diretamente r2=99% com a condutividade elétrica. A evolução da condutividade elétrica segue a marcha de lixiviação de íons potássio e a de absorção de água pelos grãos. UEL1995-01-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/429810.5433/1679-0359.1995v16n1p21Semina: Ciências Agrárias; Vol. 16 No. 1 (1995); 21-27Semina: Ciências Agrárias; v. 16 n. 1 (1995); 21-271679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4298/3559Prete, Cássio Egidio CavenaghiAbrahão, Jairo Teixeira Mendesinfo:eu-repo/semantics/openAccess2010-03-22T13:56:00Zoai:ojs.pkp.sfu.ca:article/4298Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2010-03-22T13:56Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
Condutividade elétrica dos exsudatos de grãos de café (Coffea Arábica L.). I. Desenvolvimento da metodologia
title Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
spellingShingle Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
Prete, Cássio Egidio Cavenaghi
Coffee
Grain exudes
Electrical conductivity
Quality.
Café
Exsudatos do grão
Condutividade elétrica
Qualidade.
title_short Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
title_full Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
title_fullStr Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
title_full_unstemmed Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
title_sort Electrical conductivity of coffee grain exudes I Methodology development (Coffea arábica L.).
author Prete, Cássio Egidio Cavenaghi
author_facet Prete, Cássio Egidio Cavenaghi
Abrahão, Jairo Teixeira Mendes
author_role author
author2 Abrahão, Jairo Teixeira Mendes
author2_role author
dc.contributor.author.fl_str_mv Prete, Cássio Egidio Cavenaghi
Abrahão, Jairo Teixeira Mendes
dc.subject.por.fl_str_mv Coffee
Grain exudes
Electrical conductivity
Quality.
Café
Exsudatos do grão
Condutividade elétrica
Qualidade.
topic Coffee
Grain exudes
Electrical conductivity
Quality.
Café
Exsudatos do grão
Condutividade elétrica
Qualidade.
description This paper aims to complement usual methods for coffee quality determination. The relation between electrical conductivity of coffee grains and its quality was studied. The methodology for evaluation of electrical conductivity was developed at the Seed Laboratory of the Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ-USP, Piracicaba-SP). Was recommended the use of 4 samples of 50 grains of coffee, weighed and immersed on 75ml of destilled water (in 180ml plastic glasses). Temperature was kept on 25°C for 3.5 hours, followed by shaking. The determination in electrical conductivimeter was expressed in uS/g/sample. The results showed that potassium was the most leached ion by coffee grains. The evolution of electrical conductivity follows the water absorption and potassium leaching.  
publishDate 1995
dc.date.none.fl_str_mv 1995-01-25
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://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4298
10.5433/1679-0359.1995v16n1p21
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4298
identifier_str_mv 10.5433/1679-0359.1995v16n1p21
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4298/3559
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 16 No. 1 (1995); 21-27
Semina: Ciências Agrárias; v. 16 n. 1 (1995); 21-27
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
_version_ 1799306060294520832

Registros relacionados