In situ determination of urea in milk employing a portable and low-cost lLED photometer

Detalhes bibliográficos
Autor(a) principal: Suarez, Willian Toito
Data de Publicação: 2017
Outros Autores: Alvarenga Junior, Benedito Roberto de, Franco, Mathews de Oliveira Krambeck, Gabriel, Wesley Lira, Oliveira, Denílson Mendes de, Santos, Vagner Bezerra dos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: https://doi.org/10.1007/s12161-017-1087-8
http://www.locus.ufv.br/handle/123456789/21823
Resumo: A low-cost and portable LED photometer was developed and applied for the in situ determination of urea in milk. The determination was based on Berthelot’s reaction. After optimization, the best experimental variables, the detection limit and quantification limit were 1.8 × 10^−4 and 8.0 × 10^−4 mol L^−1, respectively. The percentage recovery varied between 95.6 and 105%. The paired t test was performed for the cow and goat milk determination and the results agreed at a 95% level of confidence for the in situ determination. Supported by the results, the analytical method based on LED photometer demonstrated that it can be employed for urea determination in food production for quality purpose, and small rural producers can evaluate the quality of herd feeding due to the easy handling, portability, fast instrumental response, and low cost of the materials used.
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spelling Suarez, Willian ToitoAlvarenga Junior, Benedito Roberto deFranco, Mathews de Oliveira KrambeckGabriel, Wesley LiraOliveira, Denílson Mendes deSantos, Vagner Bezerra dos2018-09-13T18:28:21Z2018-09-13T18:28:21Z2017-11-111936976Xhttps://doi.org/10.1007/s12161-017-1087-8http://www.locus.ufv.br/handle/123456789/21823A low-cost and portable LED photometer was developed and applied for the in situ determination of urea in milk. The determination was based on Berthelot’s reaction. After optimization, the best experimental variables, the detection limit and quantification limit were 1.8 × 10^−4 and 8.0 × 10^−4 mol L^−1, respectively. The percentage recovery varied between 95.6 and 105%. The paired t test was performed for the cow and goat milk determination and the results agreed at a 95% level of confidence for the in situ determination. Supported by the results, the analytical method based on LED photometer demonstrated that it can be employed for urea determination in food production for quality purpose, and small rural producers can evaluate the quality of herd feeding due to the easy handling, portability, fast instrumental response, and low cost of the materials used.engFood Analytical Methodsv. 11, n. 4, p. 1149– 1154, abr. 2018Springer Nature Switzerland AG.info:eu-repo/semantics/openAccessLED photometerUreaMilkFood controlIn situ determination of urea in milk employing a portable and low-cost lLED photometerinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdftexto completoapplication/pdf567864https://locus.ufv.br//bitstream/123456789/21823/1/artigo.pdf188ad6da7e702009d37cd6941ea73318MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/21823/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILartigo.pdf.jpgartigo.pdf.jpgIM Thumbnailimage/jpeg5049https://locus.ufv.br//bitstream/123456789/21823/3/artigo.pdf.jpg6be7719b21bf38d37fb495f898fdb4e5MD53123456789/218232018-09-13 23:00:49.12oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452018-09-14T02:00:49LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.en.fl_str_mv In situ determination of urea in milk employing a portable and low-cost lLED photometer
title In situ determination of urea in milk employing a portable and low-cost lLED photometer
spellingShingle In situ determination of urea in milk employing a portable and low-cost lLED photometer
Suarez, Willian Toito
LED photometer
Urea
Milk
Food control
title_short In situ determination of urea in milk employing a portable and low-cost lLED photometer
title_full In situ determination of urea in milk employing a portable and low-cost lLED photometer
title_fullStr In situ determination of urea in milk employing a portable and low-cost lLED photometer
title_full_unstemmed In situ determination of urea in milk employing a portable and low-cost lLED photometer
title_sort In situ determination of urea in milk employing a portable and low-cost lLED photometer
author Suarez, Willian Toito
author_facet Suarez, Willian Toito
Alvarenga Junior, Benedito Roberto de
Franco, Mathews de Oliveira Krambeck
Gabriel, Wesley Lira
Oliveira, Denílson Mendes de
Santos, Vagner Bezerra dos
author_role author
author2 Alvarenga Junior, Benedito Roberto de
Franco, Mathews de Oliveira Krambeck
Gabriel, Wesley Lira
Oliveira, Denílson Mendes de
Santos, Vagner Bezerra dos
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Suarez, Willian Toito
Alvarenga Junior, Benedito Roberto de
Franco, Mathews de Oliveira Krambeck
Gabriel, Wesley Lira
Oliveira, Denílson Mendes de
Santos, Vagner Bezerra dos
dc.subject.pt-BR.fl_str_mv LED photometer
Urea
Milk
Food control
topic LED photometer
Urea
Milk
Food control
description A low-cost and portable LED photometer was developed and applied for the in situ determination of urea in milk. The determination was based on Berthelot’s reaction. After optimization, the best experimental variables, the detection limit and quantification limit were 1.8 × 10^−4 and 8.0 × 10^−4 mol L^−1, respectively. The percentage recovery varied between 95.6 and 105%. The paired t test was performed for the cow and goat milk determination and the results agreed at a 95% level of confidence for the in situ determination. Supported by the results, the analytical method based on LED photometer demonstrated that it can be employed for urea determination in food production for quality purpose, and small rural producers can evaluate the quality of herd feeding due to the easy handling, portability, fast instrumental response, and low cost of the materials used.
publishDate 2017
dc.date.issued.fl_str_mv 2017-11-11
dc.date.accessioned.fl_str_mv 2018-09-13T18:28:21Z
dc.date.available.fl_str_mv 2018-09-13T18:28:21Z
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 https://doi.org/10.1007/s12161-017-1087-8
http://www.locus.ufv.br/handle/123456789/21823
dc.identifier.issn.none.fl_str_mv 1936976X
identifier_str_mv 1936976X
url https://doi.org/10.1007/s12161-017-1087-8
http://www.locus.ufv.br/handle/123456789/21823
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartofseries.pt-BR.fl_str_mv v. 11, n. 4, p. 1149– 1154, abr. 2018
dc.rights.driver.fl_str_mv Springer Nature Switzerland AG.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Springer Nature Switzerland AG.
eu_rights_str_mv openAccess
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publisher.none.fl_str_mv Food Analytical Methods
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