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Browsing by Author "Camacho, Carolina"

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  • Physicochemical properties of iodine and selenium biofortified Sparus aurata and Cyprinus carpio during frozen storage
    Publication . Barbosa, Vera; Camacho, Carolina; Oliveira, Helena; Anacleto, Patrícia; Maulvault, Ana Luisa; Delgado, Inês; Ventura, Marta; Dias, Jorge; Ribeiro, Laura; Pousão-Ferreira, Pedro; Eljasik, Piotr; Panicz, Remigiusz; Sobczak, Małgorzata; Tsampa, Kalliopi; Karydas, Andreas; Nunes, Maria Leonor; Carvalho, Maria Luísa; Martins, Marta; Marques, António
    Fish biofortification with natural ingredients like iodine-rich macroalgae and selenized-yeast is an excellent strategy to enhance the nutritional quality of farmed fish. This study aimed to assess the effect of frozen storage during 12-months on physicochemical quality of biofortified seabream (Sparus aurata) and carp (Cyprinus carpio). Frozen storage reduced iodine content in biofortified seabream fillets (17%), as well as selenium content in biofortified carp fillets (24%). Yet, biofortified fillets still presented enhanced iodine and selenium contents at the end of the storage period. Increased lipid oxidation (3.45 mg MDA kg-1 for seabream and 2.41 mg MDA kg-1 for carp) and decreased water holding capacity (23-29% for seabream and 14-23% for carp) was observed during storage, whereas major changes in colour and texture occurred after 45 days (seabream) and 225 days (carp) of storage. In general, biofortified fish fillets maintained their nutritional value and quality after 360 days of frozen storage.
    2022-12-15Journal article Restricted access Show more
  • Valorisation of sea urchin (Paracentrotus lividus) gonads through canning
    Publication . Camacho, Carolina; Oliveira, Helena; Serrano, Carmo; Delgado, Inês; Coelho, Inês; Pedro, Sónia; Lourenço, Helena; Bandarra, Narcisa M.; Marques, António; Pessoa, M. Fernanda; Gonçalves, Amparo; Nunes, M. Leonor
    Fresh sea urchin (Paracentrotus lividus) gonads are a delicacy with short seasonal availability, very often heterogeneous in size and intrinsic characteristics. This study aimed to valorise this resource through the preparation of canned products (with/without Porphyra spp.) and evaluate their physicochemical and sensory quality (3–12 months). Canning contributed to a decrease in protein, K and most carotenoids contents; and a concentration of lipids, ash, Na and Se levels. A simulated 12-month ageing led to decrease the protein and β-carotene contents; and the Na and lutein levels concentration. The macroalgae addition resulted in an orange, darker and less soft product, with higher carbohydrates, Na, Se and carotenoids contents. A 25 g-dose contributes to significant daily intakes of protein (8–9%), EPA+DHA (47–53%), I (35–62%) and Se (30–47%). The products were commercially stable/sterile and had good sensory acceptance. Overall, canning constitutes a strategy to provide a nutritionally balanced product available all year-round.
    2024-03-30Journal article Open access Show more