10 documents found, page 1 of 1
Looking at the potential of marine macroalgae supplementation to afford neuropr...
Neto, Ana; Brandão, Fátima; Almeida, Armando; Abreu, Helena; Pousão-Ferreira, Pedro; Cesário, Rute; Pacheco, Mário; Pereira, PatríciaBackground: Marine macroalgae have potential as a source of many natural compounds with health benefits [1], but their use to mitigate aquatic contaminants bioaccumulation in fish and resultant toxicity is an underexplored research topic. Objective: Asses if a marine macroalgae-enriched diet can provide neuroprotection Diplodus sargus when exposed to waterborne inorganic mercury (iHg), namely by reducing bioacc...
Red seaweeds strengthening the nexus between nutrition and health: phytochemica...
Ferreira, João; Hartmann, Anja; Martins-Gomes, Carlos; Nunes, Fernando M.; Souto, Eliana B.; Santos, Dario L.; Abreu, Helena; Pereira, RuiThe red seaweeds Grateloupia turuturu and Porphyra umbilicalis are commonly used as human food, mainly in East Asia, being valuable nutritional sources. However, studies focusing on their composition and bioactivities are scarce. Thus, G. turuturu and P. umbilicalis hydroethanolic and water (infusion and decoction) extracts were prepared to characterize their bioactive compounds; assess antioxidant activity aga...
Improving agar properties of farmed Gracilaria gracilis by using filtered sunlight
Silva-Brito, Francisca; Pereira, Sara Gonçalves; Rocha, Cristina M. R.; da Costa, Elisabete; Domingues, M. Rosário; Azevedo, Andreina; Kijjoa, AnakeThe effects of different light spectra on agar yield, composition and gel properties, pigment content and antioxidant activity of Gracilaria gracilis cultivated in a land-based IMTA-system were investigated. Total phenol content, antiradical activity and lipid peroxidation inhibitory capacity in the residue obtained from G. gracilis agar extraction (agar waste, AW) were also investigated. Gracilaria gracilis wa...
Marine macroalgae as a dietary source of genoprotection in gilthead seabream (S...
Pereira, Vitória; Marques, Ana; Gaivão, Isabel; Rego, Andreia; Abreu, Helena; Pereira, Rui; Santos, Maria Ana; Guilherme, Sofia; Pacheco, MárioDNA integrity and stability are essential to organisms' health and survival. However, it has been neglected in what concerns to fish farming, disregarding the potential impact of endogenous/ exogenous factors. As marine macroalgae constitute a source of natural compounds with a large spectrum of biological activities, this study, situated in the interface of nutritional-genetic research and development of algae...
Single-step extraction of carotenoids from brown macroalgae using non-ionic sur...
Vieira, Flávia A.; Guilherme, Ricardo J. R.; Neves, Márcia C.; Abreu, Helena; Rodrigues, Eva R. O.; Maraschin, Marcelo; Coutinho, João A. P.While there is an accrued interest in the production and application of bioactive compounds from macroalgae, several of these compounds with high industrial and commercial interest remain underexplored. Carotenoids (and specifically fucoxanthin) normally found in brown macroalgae are examples of these compounds. One of the major issues associated with the poor commercial exploitation of these biomolecules is th...
Recovery of phycobiliproteins from the red macroalga Gracilaria sp using ionic ...
Martins, Margarida; Vieira, Flavia A.; Correia, Isabel; Ferreira, Rute A. S.; Abreu, Helena; Coutinho, Joao A. P.; Ventura, Sonia P. M.Bioactive compounds extracted from natural renewable sources have attracted increased interest from both industry and academia. Several biocompounds are present in red macroalgae, among which R-phycoerythrin (R-PE), which is a phycobiliprotein with a wide range of applications. The major drawback associated with it is the absence of an efficient, low cost and green extraction and purification methodology capabl...
Effects of dietary Gracilaria sp. and Alaria sp. supplementation on growth perf...
Peixoto, Maria João; Salas-Leitón, Emílio; Brito, Francisca; Pereira, Luís Ferreira; Svendsen, Jon C.; Baptista, Teresa; Pereira, Rui; Abreu, HelenaEffects of dietary seaweed supplementation on basal physiology and health biomarkers were assessed in meagre (Argyrosomus regius) subjected to bacterial infection, using Photobacterium damselae subsp. Piscicida (Phdp) as the etiologic agent. Three test diets were prepared by supplementing a basal control formulation (44 % protein, 16 % lipid, 22 kJ g−1 energy) with 0 % seaweed (control), 5 % Gracilaria sp. or 5...
Personality vulnerabilities in adolescent suicidality: The mediating role of ps...
Campos, Rui C.; Besser, Avi; Abreu, Helena; Parreira, Teresa; Blatt, Sideny J.The research literature consistently indicates that self-criticism is related to suicidality. Evidence for the role of dependency, however, is more controversial. This study examines the extent to which these personality vulnerabilities are mediated by psychological distress in the prediction of suicidality. As part of a study of adolescent psychopathology, a sample of 260 Portuguese adolescents (148 [56.9 %] f...
Impact of cultivation of Mastocarpus stellatus in IMTA on the seaweeds chemistr...
Azevedo, Gabriela; Domingues, Bernardo; Abreu, Helena; Pinto, Isabel Sousa; Feio, Gabriel; Hilliou, L.The biomass yield potential of Mastocarpus stellatus, a commercially attractive carrageenophyte for foods and pharmaceutics, was investigated by cultivating the seaweeds in the nutrient-rich outflow of a commercial fish farm. Results from two consecutive 4 weeks experiments indicate that the cultivation of this seaweed produces a mean biomass of 21 to 40.6 g DW m−2 day−1 depending on the time of the experiment....
Does aquaculture of Mastocarpus stellatus in an IMTA impact on the chemical and...
Hilliou, L.; Azevedo, Gabriela; Santos, Bernardo Domingues; Abreu, Helena; Pinto, Isabel Sousa; Feio, GabrielThe bio filtration potential of Mastocarpus stellatus, a commercially attractive carrageenophyte for foods and pharmaceutics, was investigated by cultivating the seaweeds in the nutrient-rich outflow of a commercial fish farm. Results from two consecutive 4 weeks experiments indicate that the cultivation of this seaweed allows algal growth with satisfactory nutrient removal, independent of tested cultivation co...