O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado
Ano de defesa: | 2017 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal Rural do Semi-Árido
|
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Ciência Animal
|
Departamento: |
Não Informado pela instituição
|
País: |
Brasil
|
Palavras-chave em Português: | |
Área do conhecimento CNPq: | |
Link de acesso: | https://repositorio.ufersa.edu.br/handle/tede/732 |
Resumo: | Considering the abusive use of humectant agents in frozen seafood processing, and a possible relationship between the pH parameter and the phosphate food grade additive, the objective of the present study was to evaluate if there is a correlation between the pH of the tuna meat and different concentrations and time of contact of food additive phosphate. The tuna fillets (average of 225 g) were immersed in cold solutions (5°C) of sodium tripolyphosphate (STPP) and phosphates blend (concentrations) at concentrations of 3, 5 and 10% (fillet:solution ratio of 1: 1; w:v) at 30, 60 and 120 minutes. Water was used as the control group. After immersion, the samples were drained, weighed (yield calculation), frozen in ultrafreezer (-35ºC for 24 h) and stored (-35ºC) for 15 days. After this period, the samples were thawed (5°C, 24 hours), drained for 5 minutes, and weighed (yield calculation). After thawing, samples were grilled (200°C for 3 minutes on each side) and weighed (yield calculation). Samples were withdrawn after each step (immersion, thawing and cooking) and submitted to pH, phosphate (P2O5) moisture and protein analysis. The yield (gain and loss weight) was determined by the weight of the samples before and after the treatments (immersion, thawing and cooking). All food additives used in the present study (STPP and Blend) demonstrated their efficacy in water retention after immersion, thawing and cooking. There was a gradual increase in moisture content (after immersion in solutions of STPP and Blend), and a consequent increase in moisture/protein ratio suggesting a new parameter to be considered as indicative use of humectant agents in seafood. There was a gradual increase in pH and residual phosphate (P2O5) in all treatments, and still remained below the limits established by national (pH) and international (P2O5) legislation. A linear correlation was observed between pH and P2O5 values, which may become a parameter to be considered as indicative use of humectant agents (phosphates) in seafood. From the results of experiments, we suggest a critical review on the current issue, and those possible changes can be evaluated in the official parameters as indicators of abusive use of the phosphate additive in seafood and to combat economic fraud in the frozen products. It should be emphasized that these suggestions should be the focus of the collaborative study for its validation |
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Gonçalves, Alex AugustoSilva, Jean Berg Alves dahttp://lattes.cnpq.br/1849041497210600Salgado, Raquel Limahttp://lattes.cnpq.br/886990475537671108559475435http://lattes.cnpq.br/5329984233725053http://lattes.cnpq.br/8707597761742642Lemos, Lyzandra Lais de Almeida2017-06-28T13:32:56Z2017-02-22LEMOS, Lyzandra Lais de Almeida. O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado. 2017. 59 f. Dissertação (Mestrado) - Curso de Pós-graduação em Ciência Animal, Universidade Federal Rural do Semi-Árido, Mossoró, 2017.https://repositorio.ufersa.edu.br/handle/tede/732Considering the abusive use of humectant agents in frozen seafood processing, and a possible relationship between the pH parameter and the phosphate food grade additive, the objective of the present study was to evaluate if there is a correlation between the pH of the tuna meat and different concentrations and time of contact of food additive phosphate. The tuna fillets (average of 225 g) were immersed in cold solutions (5°C) of sodium tripolyphosphate (STPP) and phosphates blend (concentrations) at concentrations of 3, 5 and 10% (fillet:solution ratio of 1: 1; w:v) at 30, 60 and 120 minutes. Water was used as the control group. After immersion, the samples were drained, weighed (yield calculation), frozen in ultrafreezer (-35ºC for 24 h) and stored (-35ºC) for 15 days. After this period, the samples were thawed (5°C, 24 hours), drained for 5 minutes, and weighed (yield calculation). After thawing, samples were grilled (200°C for 3 minutes on each side) and weighed (yield calculation). Samples were withdrawn after each step (immersion, thawing and cooking) and submitted to pH, phosphate (P2O5) moisture and protein analysis. The yield (gain and loss weight) was determined by the weight of the samples before and after the treatments (immersion, thawing and cooking). All food additives used in the present study (STPP and Blend) demonstrated their efficacy in water retention after immersion, thawing and cooking. There was a gradual increase in moisture content (after immersion in solutions of STPP and Blend), and a consequent increase in moisture/protein ratio suggesting a new parameter to be considered as indicative use of humectant agents in seafood. There was a gradual increase in pH and residual phosphate (P2O5) in all treatments, and still remained below the limits established by national (pH) and international (P2O5) legislation. A linear correlation was observed between pH and P2O5 values, which may become a parameter to be considered as indicative use of humectant agents (phosphates) in seafood. From the results of experiments, we suggest a critical review on the current issue, and those possible changes can be evaluated in the official parameters as indicators of abusive use of the phosphate additive in seafood and to combat economic fraud in the frozen products. It should be emphasized that these suggestions should be the focus of the collaborative study for its validationConsiderando o uso abusivo de agentes umectantes no processamento de pescado congelado, e uma possível relação entre o parâmetro pH e o aditivo fosfato, o objetivo do presente estudo foi avaliar se existe correlação entre o pH da carne do atum e diferentes concentrações e tempo de contato com o aditivo alimentar fosfato. Os filés de atum (média de 225 g) foram imersos em soluções refrigeradas (5°C) de tripolifosfato de sódio (TPF) e mistura de fosfato (blend) nas concentrações 3, 5 e 10% (proporção filé:solução de 1:1; p:v), por 30, 60 e 120 minutos. Como grupo controle utilizou-se água. Após a imersão, as amostras foram drenadas, pesadas (cálculo de rendimento), congeladas em ultrafreezer (-35ºC por 24 h) e armazenadas (-35ºC) por 15 dias. Após esse período, as amostras foram descongeladas (5°C, 24 horas), drenadas por 5 minutos, pesadas (cálculo de rendimento). Após o descongelamento, as amostras foram grelhadas (200ºC por 3 minutos em cada lado) e pesadas (cálculo do rendimento). Amostras foram retiradas após cada etapa (imersão, descongelamento e cocção) e submetidas às análises de pH, fosfato (P2O5), umidade e proteína. O rendimento (ganho/perda de peso) foi determinado pelo peso das amostras antes e após os tratamentos (imersão, descongelamento e cocção). Todos os aditivos alimentares utilizados no presente estudo (TPF e Blend) demonstraram sua eficácia na retenção de água após imersão, descongelamento e cocção. Observou-se um aumento gradual dos teores de umidade (após imersão em soluções de TPF e Blend), e consequente aumento na relação umidade/proteína que sugere um novo parâmetro a ser considerado como indicativo uso de agentes umectantes no pescado. Observou-se um aumento gradual do pH e do fosfato residual (P2O5) em todos os tratamentos, e ainda permaneceram abaixo dos limites estabelecidos pela legislação nacional (pH) e internacional (P2O5). Observou-se correlação linear entre os valores de pH e fosfato (P2O5) o qual pode se tornar um parâmetro a ser considerado como indicativo uso de agentes umectantes (fosfato) no pescado. A partir dos resultados dos experimentos, sugerimos uma revisão crítica sobre o tema, e que possíveis mudanças possam ser avaliadas nos parâmetros oficiais como indicadores de uso abusivo do aditivo fosfato em pescado e combater uma fraude econômica nos produtos congelados. Ressalta-se que essas sugestões devem ser o foco do estudo colaborativo para sua validaçãoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior2017-06-28application/pdfhttp://repositorio.ufersa.edu.br/retrieve/1833/LyzandraLAL_DISSERT.pdf.jpgporUniversidade Federal Rural do Semi-ÁridoPrograma de Pós-Graduação em Ciência AnimalUFERSABrasilCC-BY-SAinfo:eu-repo/semantics/openAccessPescadoAditivos umectantesFraudeRetenção de águaSeafoodHumectant additivesFraudWater retentionCNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIAO potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescadoThe hydrogenation potential (ph) as a parameter indicator of the abusive use of the feed additive phosphate in fishinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisreponame:Biblioteca Digital de Teses e Dissertações da UFERSAinstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAORIGINALLyzandraLAL_DISSERT.pdfLyzandraLAL_DISSERT.pdfapplication/pdf1553694https://repositorio.ufersa.edu.br//bitstream/tede/732/1/LyzandraLAL_DISSERT.pdf3b2dce61aa34ba06fdc0df889642bc15MD51LICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado |
dc.title.alternative.por.fl_str_mv |
The hydrogenation potential (ph) as a parameter indicator of the abusive use of the feed additive phosphate in fish |
title |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado |
spellingShingle |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado Lemos, Lyzandra Lais de Almeida Pescado Aditivos umectantes Fraude Retenção de água Seafood Humectant additives Fraud Water retention CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
title_short |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado |
title_full |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado |
title_fullStr |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado |
title_full_unstemmed |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado |
title_sort |
O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado |
author |
Lemos, Lyzandra Lais de Almeida |
author_facet |
Lemos, Lyzandra Lais de Almeida |
author_role |
author |
dc.contributor.authorID.por.fl_str_mv |
08559475435 |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/5329984233725053 |
dc.contributor.advisorLattes.por.fl_str_mv |
http://lattes.cnpq.br/8707597761742642 |
dc.contributor.advisor1.fl_str_mv |
Gonçalves, Alex Augusto |
dc.contributor.referee1.fl_str_mv |
Silva, Jean Berg Alves da |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/1849041497210600 |
dc.contributor.referee2.fl_str_mv |
Salgado, Raquel Lima |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/8869904755376711 |
dc.contributor.author.fl_str_mv |
Lemos, Lyzandra Lais de Almeida |
contributor_str_mv |
Gonçalves, Alex Augusto Silva, Jean Berg Alves da Salgado, Raquel Lima |
dc.subject.por.fl_str_mv |
Pescado Aditivos umectantes Fraude Retenção de água Seafood Humectant additives Fraud Water retention |
topic |
Pescado Aditivos umectantes Fraude Retenção de água Seafood Humectant additives Fraud Water retention CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA |
description |
Considering the abusive use of humectant agents in frozen seafood processing, and a possible relationship between the pH parameter and the phosphate food grade additive, the objective of the present study was to evaluate if there is a correlation between the pH of the tuna meat and different concentrations and time of contact of food additive phosphate. The tuna fillets (average of 225 g) were immersed in cold solutions (5°C) of sodium tripolyphosphate (STPP) and phosphates blend (concentrations) at concentrations of 3, 5 and 10% (fillet:solution ratio of 1: 1; w:v) at 30, 60 and 120 minutes. Water was used as the control group. After immersion, the samples were drained, weighed (yield calculation), frozen in ultrafreezer (-35ºC for 24 h) and stored (-35ºC) for 15 days. After this period, the samples were thawed (5°C, 24 hours), drained for 5 minutes, and weighed (yield calculation). After thawing, samples were grilled (200°C for 3 minutes on each side) and weighed (yield calculation). Samples were withdrawn after each step (immersion, thawing and cooking) and submitted to pH, phosphate (P2O5) moisture and protein analysis. The yield (gain and loss weight) was determined by the weight of the samples before and after the treatments (immersion, thawing and cooking). All food additives used in the present study (STPP and Blend) demonstrated their efficacy in water retention after immersion, thawing and cooking. There was a gradual increase in moisture content (after immersion in solutions of STPP and Blend), and a consequent increase in moisture/protein ratio suggesting a new parameter to be considered as indicative use of humectant agents in seafood. There was a gradual increase in pH and residual phosphate (P2O5) in all treatments, and still remained below the limits established by national (pH) and international (P2O5) legislation. A linear correlation was observed between pH and P2O5 values, which may become a parameter to be considered as indicative use of humectant agents (phosphates) in seafood. From the results of experiments, we suggest a critical review on the current issue, and those possible changes can be evaluated in the official parameters as indicators of abusive use of the phosphate additive in seafood and to combat economic fraud in the frozen products. It should be emphasized that these suggestions should be the focus of the collaborative study for its validation |
publishDate |
2017 |
dc.date.accessioned.fl_str_mv |
2017-06-28T13:32:56Z |
dc.date.issued.fl_str_mv |
2017-02-22 |
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.citation.fl_str_mv |
LEMOS, Lyzandra Lais de Almeida. O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado. 2017. 59 f. Dissertação (Mestrado) - Curso de Pós-graduação em Ciência Animal, Universidade Federal Rural do Semi-Árido, Mossoró, 2017. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufersa.edu.br/handle/tede/732 |
identifier_str_mv |
LEMOS, Lyzandra Lais de Almeida. O potencial hidrogeniônico (ph) como parâmetro indicador do uso abusivo do aditivo alimentar fosfato em pescado. 2017. 59 f. Dissertação (Mestrado) - Curso de Pós-graduação em Ciência Animal, Universidade Federal Rural do Semi-Árido, Mossoró, 2017. |
url |
https://repositorio.ufersa.edu.br/handle/tede/732 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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CC-BY-SA info:eu-repo/semantics/openAccess |
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CC-BY-SA |
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openAccess |
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Universidade Federal Rural do Semi-Árido |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Ciência Animal |
dc.publisher.initials.fl_str_mv |
UFERSA |
dc.publisher.country.fl_str_mv |
Brasil |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
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