Desenvolvimento de novos produtos alimentares enriquecidos com algas
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.22/14993 |
Resumo: | Climate change, current agriculture production, and consumption patterns have become the most significant problems of the food industry. Several studies proved the need to develop functional food as an alternative. Seaweeds are still not commonly used in Europe, but their several health benefits could improve food habits and essential mineral intakes. Lack of iodine has been documented as a global problem since the last century, and this mineral comprises a vital part of a healthy diet. The main objectives of this work were the development of a new and accessible food product rich in iodine and other essential minerals in order to fill the gap that the current European diet has but, also with appealing sensory characteristics. To achieve these main objectives, a canned mackerel enriched with seaweeds was developed. The selected edible macroalgae were: S. latissima, L. digitata, U. pinnatifida, and C. crispus. To quantify the minerals of interest (I, Se, Na, and K) and arsenic, the samples were digested by microwave-assisted acid digestion. The quantification of As, I and Se were performed by inductively coupled plasma - mass spectrometry; Na and K were determined by high-resolution continuum source flame atomic absorption spectrometer. All the characterized species exhibited high iodine levels: U. pinnatifida (64.02 ± 8.74 µg I/g ww), L. digitata (643.5 ± 13.0 µg I/g ww), S. latissima (211.6 ± 12.8 µg I/g ww) and C. crispus (239.2± 17.7 µg I/g ww). The impact of processing steps, such as rehydration and boiling, was assessed. Several canned fish samples were prepared, with and without the addition of algae, and comparisons between them were made. All samples revealed a satisfactory contribution to the recommended daily allowances of nutritionally essential minerals (K: 0.53-3.64%, I: 310.32-1780.8 %, Se: 71.1-99.9%). A sensory analysis was done after the canned samples production. The samples with macroalgae revealed the best textural aspect and aroma. Therefore, it was concluded that the sample with S. latissima has the best aroma, flavour, texture, and appearance. In conclusion, all the main objectives of the work were achieved, and a healthy product was developed. Some future work is needed to optimize the canned product and to explore further the total macroalgae and canned beneficial properties. |
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Desenvolvimento de novos produtos alimentares enriquecidos com algasSeaweedsFunctional FoodCanned FishIodineSeleniumMacroalgasAlimentos FuncionaisConservas de PeixeIodoSelénioClimate change, current agriculture production, and consumption patterns have become the most significant problems of the food industry. Several studies proved the need to develop functional food as an alternative. Seaweeds are still not commonly used in Europe, but their several health benefits could improve food habits and essential mineral intakes. Lack of iodine has been documented as a global problem since the last century, and this mineral comprises a vital part of a healthy diet. The main objectives of this work were the development of a new and accessible food product rich in iodine and other essential minerals in order to fill the gap that the current European diet has but, also with appealing sensory characteristics. To achieve these main objectives, a canned mackerel enriched with seaweeds was developed. The selected edible macroalgae were: S. latissima, L. digitata, U. pinnatifida, and C. crispus. To quantify the minerals of interest (I, Se, Na, and K) and arsenic, the samples were digested by microwave-assisted acid digestion. The quantification of As, I and Se were performed by inductively coupled plasma - mass spectrometry; Na and K were determined by high-resolution continuum source flame atomic absorption spectrometer. All the characterized species exhibited high iodine levels: U. pinnatifida (64.02 ± 8.74 µg I/g ww), L. digitata (643.5 ± 13.0 µg I/g ww), S. latissima (211.6 ± 12.8 µg I/g ww) and C. crispus (239.2± 17.7 µg I/g ww). The impact of processing steps, such as rehydration and boiling, was assessed. Several canned fish samples were prepared, with and without the addition of algae, and comparisons between them were made. All samples revealed a satisfactory contribution to the recommended daily allowances of nutritionally essential minerals (K: 0.53-3.64%, I: 310.32-1780.8 %, Se: 71.1-99.9%). A sensory analysis was done after the canned samples production. The samples with macroalgae revealed the best textural aspect and aroma. Therefore, it was concluded that the sample with S. latissima has the best aroma, flavour, texture, and appearance. In conclusion, all the main objectives of the work were achieved, and a healthy product was developed. Some future work is needed to optimize the canned product and to explore further the total macroalgae and canned beneficial properties.Fatores como as alterações climáticas, agricultura intensiva e crescimento do consumo tornaram-se alguns dos problemas da indústria alimentar. Diversos estudos provam que existe uma necessidade crescente de desenvolvimento de alimentos funcionais. Apesar dos seus vastos benefícios que poderiam melhorar os hábitos alimentares europeus as macroalgas não são muito utilizadas nesta zona do globo. A deficiência do iodo na população tem sido estudada e atualmente é considerada como um problema mundial. Os principais objetivos deste trabalho são o desenvolvimento de um produto alimentar, mais barato e acessível rico em iodo e outros minerais essenciais, de modo a colmatar o défice deste mineral na dieta Europeia, mas também que apresente características sensoriais apelativas. De modo a cumprir estes objetivos projetou-se o desenvolvimento de uma conserva de cavala com macroalgas. As macroalgas edíveis escolhidas foram: S. latissima, L. digitata, U. pinnatifida e C. crispus. De forma a quantificar os minerais de interesse (I, Se, Na e K) e arsénio as amostras foram previamente digeridas por micro-ondas. A quantificação de As, I e Se foi realizada por ICPMS. Na e K por HR-CS-FAAS. Todas as macroalgas selecionadas demonstraram altos teores em iodo: U. pinnatifida (64.02 ± 8.74 µg I/g ww), L. digitata (643.50 ± 12.99 µg I/g ww), S. latissima (211.60 ± 12.79 µg I/g ww) e C. crispus (239.21± 17.69 µg I/g ww). As amostras de conservas criadas revelaram altas percentagens de contribuição para o valor diário recomendado de alguns elementos (K: 0.53- 3.64%, I: 310.32-1780.8 %, Se: 71.1-99.9%). Após a produção de conservas foi efetuada a análise sensorial. Em geral todas as amostras com a presença da macroalga revelaram uma melhor textura e aroma marinho. Em concordância concluiu-se que a melhor conserva (sabor, aroma, aspeto e textura) seria a alga com a inserção da macroalga S. latissima. Em conclusão, os principais objetivos do trabalho foram alcançados. Contudo, algum trabalho futuro é recomendado de forma a otimizar os produtos criados, testar mais amostras para validação do método e para explorar o benefício total do uso das macroalgas na conserva de cavala.Delerue-Matos, Cristina Maria FernandesRepositório Científico do Instituto Politécnico do PortoCorreia, Helena Fernandes2022-10-15T00:31:00Z20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.22/14993TID:202295958enginfo: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:RCAAP2023-03-13T12:58:43Zoai:recipp.ipp.pt:10400.22/14993Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:34:47.521269Repositório 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 |
Desenvolvimento de novos produtos alimentares enriquecidos com algas |
title |
Desenvolvimento de novos produtos alimentares enriquecidos com algas |
spellingShingle |
Desenvolvimento de novos produtos alimentares enriquecidos com algas Correia, Helena Fernandes Seaweeds Functional Food Canned Fish Iodine Selenium Macroalgas Alimentos Funcionais Conservas de Peixe Iodo Selénio |
title_short |
Desenvolvimento de novos produtos alimentares enriquecidos com algas |
title_full |
Desenvolvimento de novos produtos alimentares enriquecidos com algas |
title_fullStr |
Desenvolvimento de novos produtos alimentares enriquecidos com algas |
title_full_unstemmed |
Desenvolvimento de novos produtos alimentares enriquecidos com algas |
title_sort |
Desenvolvimento de novos produtos alimentares enriquecidos com algas |
author |
Correia, Helena Fernandes |
author_facet |
Correia, Helena Fernandes |
author_role |
author |
dc.contributor.none.fl_str_mv |
Delerue-Matos, Cristina Maria Fernandes Repositório Científico do Instituto Politécnico do Porto |
dc.contributor.author.fl_str_mv |
Correia, Helena Fernandes |
dc.subject.por.fl_str_mv |
Seaweeds Functional Food Canned Fish Iodine Selenium Macroalgas Alimentos Funcionais Conservas de Peixe Iodo Selénio |
topic |
Seaweeds Functional Food Canned Fish Iodine Selenium Macroalgas Alimentos Funcionais Conservas de Peixe Iodo Selénio |
description |
Climate change, current agriculture production, and consumption patterns have become the most significant problems of the food industry. Several studies proved the need to develop functional food as an alternative. Seaweeds are still not commonly used in Europe, but their several health benefits could improve food habits and essential mineral intakes. Lack of iodine has been documented as a global problem since the last century, and this mineral comprises a vital part of a healthy diet. The main objectives of this work were the development of a new and accessible food product rich in iodine and other essential minerals in order to fill the gap that the current European diet has but, also with appealing sensory characteristics. To achieve these main objectives, a canned mackerel enriched with seaweeds was developed. The selected edible macroalgae were: S. latissima, L. digitata, U. pinnatifida, and C. crispus. To quantify the minerals of interest (I, Se, Na, and K) and arsenic, the samples were digested by microwave-assisted acid digestion. The quantification of As, I and Se were performed by inductively coupled plasma - mass spectrometry; Na and K were determined by high-resolution continuum source flame atomic absorption spectrometer. All the characterized species exhibited high iodine levels: U. pinnatifida (64.02 ± 8.74 µg I/g ww), L. digitata (643.5 ± 13.0 µg I/g ww), S. latissima (211.6 ± 12.8 µg I/g ww) and C. crispus (239.2± 17.7 µg I/g ww). The impact of processing steps, such as rehydration and boiling, was assessed. Several canned fish samples were prepared, with and without the addition of algae, and comparisons between them were made. All samples revealed a satisfactory contribution to the recommended daily allowances of nutritionally essential minerals (K: 0.53-3.64%, I: 310.32-1780.8 %, Se: 71.1-99.9%). A sensory analysis was done after the canned samples production. The samples with macroalgae revealed the best textural aspect and aroma. Therefore, it was concluded that the sample with S. latissima has the best aroma, flavour, texture, and appearance. In conclusion, all the main objectives of the work were achieved, and a healthy product was developed. Some future work is needed to optimize the canned product and to explore further the total macroalgae and canned beneficial properties. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2019-01-01T00:00:00Z 2022-10-15T00:31:00Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
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http://hdl.handle.net/10400.22/14993 TID:202295958 |
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eng |
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openAccess |
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