Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation Factors
<i>Ulva</i> macroalgae species are recognized to be an underexploited source of key nutrients, including proteins, fibers and minerals. The present work evaluated the nutritional value protein, ash, mineral composition, fat, fatty acid profile and dietary fiber of the green macroalgae &l...
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MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/13/6137 |
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| author | Ana S. Queirós Ana R. Circuncisão Eduarda Pereira Mónica Válega Maria H. Abreu Artur M. S. Silva Susana M. Cardoso |
| author_facet | Ana S. Queirós Ana R. Circuncisão Eduarda Pereira Mónica Válega Maria H. Abreu Artur M. S. Silva Susana M. Cardoso |
| author_sort | Ana S. Queirós |
| collection | DOAJ |
| description | <i>Ulva</i> macroalgae species are recognized to be an underexploited source of key nutrients, including proteins, fibers and minerals. The present work evaluated the nutritional value protein, ash, mineral composition, fat, fatty acid profile and dietary fiber of the green macroalgae <i>Ulva rigida</i> produced in an open land-based integrated multi-trophic aquaculture (IMTA) system, over four seasons. Overall, protein and fat content of the farmed algae ranged between 7.6 and 25.8% DW and between 0.2 and 1.3% DW, respectively, reaching the highest levels during autumn/winter seasons. In turn, total dietary fiber and ashes showed a contrary seasonal tendency, reaching maximum levels in spring (40.9–58.3% DW and 25.5–38.8% DW, respectively). Notably, the latter were particularly characterized by their richness in potassium, magnesium and iron, and a sodium/potassium ratio bellow 1.7. Variable cultivation conditions of stocking density (Sd) and flow rate (Fr) were also tested, allowing to confirm that manipulation of cultivation conditions in an IMTA system may help to improve the nutritional value of this macroalga and to boost its market value through its use as a functional food ingredient. |
| first_indexed | 2024-03-10T09:52:49Z |
| format | Article |
| id | doaj.art-62e34e21f36a4a7c99dae1cc1075c15b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:52:49Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-62e34e21f36a4a7c99dae1cc1075c15b2023-11-22T02:34:11ZengMDPI AGApplied Sciences2076-34172021-07-011113613710.3390/app11136137Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation FactorsAna S. Queirós0Ana R. Circuncisão1Eduarda Pereira2Mónica Válega3Maria H. Abreu4Artur M. S. Silva5Susana M. Cardoso6LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalLAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalLAQV-REQUIMTE & CESAM, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalLAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalAlgaPlus-Produção e comercialização de algas e seus derivados, Lda, Ílhavo, 3830-196 Aveiro, PortugalLAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, PortugalLAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal<i>Ulva</i> macroalgae species are recognized to be an underexploited source of key nutrients, including proteins, fibers and minerals. The present work evaluated the nutritional value protein, ash, mineral composition, fat, fatty acid profile and dietary fiber of the green macroalgae <i>Ulva rigida</i> produced in an open land-based integrated multi-trophic aquaculture (IMTA) system, over four seasons. Overall, protein and fat content of the farmed algae ranged between 7.6 and 25.8% DW and between 0.2 and 1.3% DW, respectively, reaching the highest levels during autumn/winter seasons. In turn, total dietary fiber and ashes showed a contrary seasonal tendency, reaching maximum levels in spring (40.9–58.3% DW and 25.5–38.8% DW, respectively). Notably, the latter were particularly characterized by their richness in potassium, magnesium and iron, and a sodium/potassium ratio bellow 1.7. Variable cultivation conditions of stocking density (Sd) and flow rate (Fr) were also tested, allowing to confirm that manipulation of cultivation conditions in an IMTA system may help to improve the nutritional value of this macroalga and to boost its market value through its use as a functional food ingredient.https://www.mdpi.com/2076-3417/11/13/6137green algaeedibleseaweedIMTAseasonal variationcultivated macroalgae |
| spellingShingle | Ana S. Queirós Ana R. Circuncisão Eduarda Pereira Mónica Válega Maria H. Abreu Artur M. S. Silva Susana M. Cardoso Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation Factors Applied Sciences green algae edible seaweed IMTA seasonal variation cultivated macroalgae |
| title | Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation Factors |
| title_full | Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation Factors |
| title_fullStr | Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation Factors |
| title_full_unstemmed | Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation Factors |
| title_short | Valuable Nutrients from <i>Ulva rigida</i>: Modulation by Seasonal and Cultivation Factors |
| title_sort | valuable nutrients from i ulva rigida i modulation by seasonal and cultivation factors |
| topic | green algae edible seaweed IMTA seasonal variation cultivated macroalgae |
| url | https://www.mdpi.com/2076-3417/11/13/6137 |
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