10 documents found, page 1 of 1
From a heavy metal perspective, is macroalgal biomass from Madeira Archipelago ...
Nunes, Nuno; Ferraz, Sónia; Venuleo, Marianna; Barros, Ana I. R. N. A.; Carvalho, Miguel A. A. Pinheiro deMacroalgae are considered a valuable source of several compounds with nutritional, nutraceutical, cosmeceutical, and phar maceutical applications. They are also used for crop fertilization and biofortifcation by introducing important minerals into the soil essential for crop productivity. At the same time, however, they are known bio-accumulators of some heavy metals. In this work, we assessed the content of 7 ...
Biochemical study of attached macroalgae from the Madeira Archipelago and beach...
Nunes, Nuno; Valente, Sofia; Ferraz, Sónia; Barreto, Maria Carmo; Carvalho, Miguel Â. A. Pinheiro deFifteen attached macroalgae from the Madeira Archipelago, comprising three green, three red and nine brown algal species, as well as two beach-cast macroalgal samples, collected along the north shore of Gran Canaria, were assessed for their biochemical properties. The anal ysis included the determination of total minerals, total carbohydrates, protein, lipids, chlorophyll a, total carote noids, total phenolic c...
Pharmacological and cosmeceutical potential of Seaweed Beach-Casts of Macaronesia
Zárate, Rafael; Portillo, Eduardo; Teixidó, Sílvia; Carvalho, Miguel A. A. Pinheiro de; Nunes, Nuno; Ferraz, Sónia; Seca, Ana M. L.; Rosa, Gonçalo P.Seaweed beach-casts are a seasonal phenomenon that regularly deposits tons of algae biomass on beaches, which are usually disposed of in landfills. The present work aimed to contribute to the valorization of this biomass by studying bioactivities that reveal its potential in the pharmaceutical and/or cosmeceutical industries. Methanol and ethanol extracts and fractions from 15 beach-casts biomass were tested fo...
Biochemical study of attached macroalgae from the Madeira Archipelago and beach...
Nunes, Nuno; Valente, Sofia; Ferraz, Sónia; Barreto, Maria do Carmo; Carvalho, Miguel A. A. Pinheiro deFifteen attached macroalgae from the Madeira Archipelago, comprising three green, three red and nine brown algal species, as well as two beach-cast macroalgal samples, collected along the north shore of Gran Canaria, were assessed for their biochemical properties. The analysis included the determination of total minerals, total carbohydrates, protein, lipids, chlorophyll a, total carotenoids, total phenolic con...
Pharmacological and Cosmeceutical Potential of Seaweed Beach-Casts of Macaronesia
Zárate, Rafael; Portillo, Eduardo; Teixidó, Sílvia; Carvalho, Miguel A. A. Pinheiro de; Nunes, Nuno; Ferraz, Sónia; Seca, Ana M. L.; Rosa, Gonçalo P.Seaweed beach-casts are a seasonal phenomenon that regularly deposits tons of algae biomass on beaches, which are usually disposed of in landfills. The present work aimed to contribute to the valorization of this biomass by studying bioactivities that reveal its potential in the pharmaceutical and/or cosmeceutical industries. Methanol and ethanol extracts and fractions from 15 beach-casts biomass were tested fo...
Different seaweeds use for iodine deficiency overcome
Ferraz, Sónia; Ragonezi, Carla; Nunes, Nuno; Valente, Sofia; Carvalho, Miguel A. A. Pinheiro deIodine deficiency is one of the three most common nutritional deficiencies worldwide and is a global public health problem that affects particularly the young children, pregnant women and elderly. The consequences of iodine deficiency disorder (IDD) include goiter and cretinism. The traditional consumption of iodine via supplemented salt should be monitored to reduce population sodium intake due to hypertension...
Fatty acid composition, TLC screening, ATR-FTIR analysis, anti-cholinesterase a...
Nunes, Nuno; Rosa, Gonçalo P.; Ferraz, Sónia; Barreto, Maria do Carmo; Carvalho, Miguel A. A. Pinheiro deThree macroalgae collected at Madeira Island were included in this study to determine their potential for drug, nutraceutical, food, or supplement application. Fatty acid content was higher in Zonaria tournefortii (12.32 mg g⁻¹ dw) with 16.58% of PUFAs, eicosapentaenoic acid (C20:5 omega 3), and arachidonic acid (20:4 omega 6) having concentrations of 2.59 and 1.17%, respectively. The anti-thrombogenic and anti...
Constructing ethanol-derived bioactive extracts using the brown seaweed Zonaria...
Nunes, Nuno; Valente, Sofia; Ferraz, Sónia; Barreto, Maria do Carmo; Carvalho, Miguel A. A. Pinheiro deUnderstanding the biochemical and antioxidant composition and capacity of a target biomass is the first step to its selectivity as functional food which can enhance the ability to promote health by reducing the risk of chronic diseases. The main purpose of this work was to employ response surface methodology (RSM) to determine the effect of the independent variables, % of ethanol (50–96%), time of sonication (0...
Nutraceutical potential of Asparagopsis taxiformis (Delile) Trevisan extracts a...
Nunes, Nuno; Valente, S.; Ferraz, Sónia; Barreto, Maria Carmo; Carvalho, M .A. A. Pinheiro deThe main goal of the present work was to determine the nutraceutical potential of Asparagopsis taxiformis D. extracts from Madeira Archipelago south coast. Extraction methodologies consisted either/or in 72 hours stirring, at room temperature (M1), or 6 cycles of Soxhlet extraction (M2), both with re-extraction. Solvents used were distilled water, ethanol, methanol and ethyl acetate. M1 allowed to obtain the hi...
Comportamentos de bullying : estudo numa escola técnico profissional
Ferraz, Sónia; Pereira, Beatriz OliveiraEste estudo procurou compreender de que modo o bullying existe nas relações dos alunos no ensino técnico-profissional.O estudo foi organizado em duas partes: a primeira parte, que procura perceber o comportamento de agressão e vitimação entre pares, com uma amostra de 115 alunosentre os 15 e os 24 anos, em que 66,1% são do género masculino e 33,9% do género feminino, sujeitos a um questionário adaptado de Olweu...