Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.14/37985 |
Resumo: | In the last centuries, beverages derived from alcoholic fermentation, namely beer and wine, have been of great importance, given the increasing rate of consumption, resulting in a need for large-scale production. Thus, it becomes essential to develop methodologies capable of measuring more than one parameter simultaneously, to facilitate the work of quality monitoring in line production. In this work, a biparametric system was developed for the determination of potassium content and color in wines and beers. Thus, several method development and optimization processes were carried out throughout the study. The final assembly of the sequential analysis system (SIA) consists of a 10-port selection valve connected to the different solutions and detectors used. In one port was placed the connection to the sample/standard, in another port the connection to the potentiometer, for the potentiometric determination of potassium, and in another port the connection to the spectrophotometer, for the determination of color. To facilitate the switch of sample/standard there was also a port with a connection to a waste, where the excess was discarded. The developed method allowed the determination of potassium between the concentrations of 1.08 x 10-1 M and 1.08 x 10-3 M, with detection and quantification limits of 3.90 x 10-5 M and 1.62 x 10-4 M, respectively. This system also allowed the color determination for each sample. For the potassium determination, the values obtained by the potentiometric system were compared with the values obtained by flame emission photometry, and there was no statistically significant difference (<10%). The potassium calibration curve proved to be stable over time (monthly), as the respective calibration curves were found to be identical within statistical variation. The methodology for determining color was validated by comparing the results with the reference method. It is concluded that the system can be applied to beer and wine samples in an industrial context with the aim of facilitating simultaneous measurements of the two parameters, using less volume and with less operator work, making it easier to perform other tasks. |
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Development of a sequential injection system for the assessment of potassium and color in alcoholic beveragesSequential analysis system (SIA)PotassiumColorWineBeerSistema de análise por injeção sequencial (SIA)PotássioCorVinhoCervejaDomínio/Área Científica::Ciências Agrárias::Biotecnologia Agrária e AlimentarIn the last centuries, beverages derived from alcoholic fermentation, namely beer and wine, have been of great importance, given the increasing rate of consumption, resulting in a need for large-scale production. Thus, it becomes essential to develop methodologies capable of measuring more than one parameter simultaneously, to facilitate the work of quality monitoring in line production. In this work, a biparametric system was developed for the determination of potassium content and color in wines and beers. Thus, several method development and optimization processes were carried out throughout the study. The final assembly of the sequential analysis system (SIA) consists of a 10-port selection valve connected to the different solutions and detectors used. In one port was placed the connection to the sample/standard, in another port the connection to the potentiometer, for the potentiometric determination of potassium, and in another port the connection to the spectrophotometer, for the determination of color. To facilitate the switch of sample/standard there was also a port with a connection to a waste, where the excess was discarded. The developed method allowed the determination of potassium between the concentrations of 1.08 x 10-1 M and 1.08 x 10-3 M, with detection and quantification limits of 3.90 x 10-5 M and 1.62 x 10-4 M, respectively. This system also allowed the color determination for each sample. For the potassium determination, the values obtained by the potentiometric system were compared with the values obtained by flame emission photometry, and there was no statistically significant difference (<10%). The potassium calibration curve proved to be stable over time (monthly), as the respective calibration curves were found to be identical within statistical variation. The methodology for determining color was validated by comparing the results with the reference method. It is concluded that the system can be applied to beer and wine samples in an industrial context with the aim of facilitating simultaneous measurements of the two parameters, using less volume and with less operator work, making it easier to perform other tasks.Nos últimos séculos, as bebidas derivadas da fermentação alcoólica, nomeadamente a cerveja e o vinho, tiveram grande importância, tendo em conta a crescente taxa de consumo, resultando numa necessidade de produção em larga escala. Deste modo, torna-se essencial desenvolver metodologias capazes de medir mais do que um parâmetro em simultâneo, para facilitar o trabalho de monitorização da qualidade na produção em linha. Neste trabalho foi desenvolvido um sistema biparamétrico para a determinação do teor de potássio e da cor em vinhos e cervejas. Deste modo, ao longo do estudo foram realizados vários processos de desenvolvimento e otimização dos métodos. A montagem final do sistema de análise sequencial (SIA) é composta por uma válvula de seleção de 10 portas ligada às diferentes soluções e detetores utilizados. Numa das portas colocou-se a ligação à amostra/padrão, noutra porta a ligação ao potenciómetro, para a determinação potenciométrica de potássio, e noutra porta a ligação ao espetrofotómetro, para a determinação da cor. Para facilitar a mudança de amostra/padrão havia também uma porta com ligação a um esgoto, onde se descartava o excesso. O método desenvolvido permitiu a determinação de potássio entre as concentrações de 1.08 x 10-1 M e 1.08 x 10-3 M, com limite de deteção e quantificação de 3.90 x 10-5 M e 1.62 x 10-4 M, respetivamente. Permitiu também a determinação da cor das variadas amostras. Para a determinação de potássio, os valores obtidos pelo sistema potenciométrico foram comparados com os valores obtidos por fotometria de emissão de chama, e não se verificou diferença estatística significativa (<10%). A curva de calibração referente à determinação de potássio mostrou-se estável ao longo do tempo (mensal), já que as respetivas curvas de calibração foram consideradas idênticas dentro da variação estatística. A metodologia para determinar a cor foi validada por comparação direta dos valores obtidos com os referentes ao método de referência. Conclui-se que o sistema pode ser aplicado a amostras de cerveja e vinho em contexto industrial com o objetivo de facilitar as medições simultâneas dos dois parâmetros, gastando um menor volume e com menos trabalho do operador, facilitando a execução de outras tarefas.Rangel, António Osmaro Santos SilvaMesquita, Raquel Beatriz Ribeiro deVeritati - Repositório Institucional da Universidade Católica PortuguesaNunes, Maria João Morais2022-06-27T10:41:47Z2022-03-252022-022022-03-25T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.14/37985TID:203025270enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-12T17:43:29Zoai:repositorio.ucp.pt:10400.14/37985Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:30:57.354830Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages |
title |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages |
spellingShingle |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages Nunes, Maria João Morais Sequential analysis system (SIA) Potassium Color Wine Beer Sistema de análise por injeção sequencial (SIA) Potássio Cor Vinho Cerveja Domínio/Área Científica::Ciências Agrárias::Biotecnologia Agrária e Alimentar |
title_short |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages |
title_full |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages |
title_fullStr |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages |
title_full_unstemmed |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages |
title_sort |
Development of a sequential injection system for the assessment of potassium and color in alcoholic beverages |
author |
Nunes, Maria João Morais |
author_facet |
Nunes, Maria João Morais |
author_role |
author |
dc.contributor.none.fl_str_mv |
Rangel, António Osmaro Santos Silva Mesquita, Raquel Beatriz Ribeiro de Veritati - Repositório Institucional da Universidade Católica Portuguesa |
dc.contributor.author.fl_str_mv |
Nunes, Maria João Morais |
dc.subject.por.fl_str_mv |
Sequential analysis system (SIA) Potassium Color Wine Beer Sistema de análise por injeção sequencial (SIA) Potássio Cor Vinho Cerveja Domínio/Área Científica::Ciências Agrárias::Biotecnologia Agrária e Alimentar |
topic |
Sequential analysis system (SIA) Potassium Color Wine Beer Sistema de análise por injeção sequencial (SIA) Potássio Cor Vinho Cerveja Domínio/Área Científica::Ciências Agrárias::Biotecnologia Agrária e Alimentar |
description |
In the last centuries, beverages derived from alcoholic fermentation, namely beer and wine, have been of great importance, given the increasing rate of consumption, resulting in a need for large-scale production. Thus, it becomes essential to develop methodologies capable of measuring more than one parameter simultaneously, to facilitate the work of quality monitoring in line production. In this work, a biparametric system was developed for the determination of potassium content and color in wines and beers. Thus, several method development and optimization processes were carried out throughout the study. The final assembly of the sequential analysis system (SIA) consists of a 10-port selection valve connected to the different solutions and detectors used. In one port was placed the connection to the sample/standard, in another port the connection to the potentiometer, for the potentiometric determination of potassium, and in another port the connection to the spectrophotometer, for the determination of color. To facilitate the switch of sample/standard there was also a port with a connection to a waste, where the excess was discarded. The developed method allowed the determination of potassium between the concentrations of 1.08 x 10-1 M and 1.08 x 10-3 M, with detection and quantification limits of 3.90 x 10-5 M and 1.62 x 10-4 M, respectively. This system also allowed the color determination for each sample. For the potassium determination, the values obtained by the potentiometric system were compared with the values obtained by flame emission photometry, and there was no statistically significant difference (<10%). The potassium calibration curve proved to be stable over time (monthly), as the respective calibration curves were found to be identical within statistical variation. The methodology for determining color was validated by comparing the results with the reference method. It is concluded that the system can be applied to beer and wine samples in an industrial context with the aim of facilitating simultaneous measurements of the two parameters, using less volume and with less operator work, making it easier to perform other tasks. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06-27T10:41:47Z 2022-03-25 2022-02 2022-03-25T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.14/37985 TID:203025270 |
url |
http://hdl.handle.net/10400.14/37985 |
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TID:203025270 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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