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- Chemical composition of red, brown and green macroalgae from Buarcos bay in Central West Coast of PortugalPublication . Rodrigues, Dina; Freitas, Ana C.; Pereira, Leonel; Rocha-Santos, Teresa A. P.; Vasconcelos, Marta W.; Roriz, Mariana; Rodríguez-Alcalá, Luís M.; Gomes, Ana M. P.; Duarte, Armando C.Six representative edible seaweeds from the Central West Portuguese Coast, including the less studied Osmundea pinnatifida, were harvested from Buarcos bay, Portugal and their chemical characterization determined. Protein content, total sugar and fat contents ranged between 14.4% and 23.8%, 32.4% and 49.3% and 0.6–3.6%. Highest total phenolic content was observed in Codium tomentosum followed by Sargassum muticum and O. pinnatifida. Fatty acid (FA) composition covered the branched chain C13ai to C22:5 n3 with variable content in n6 and n3 FA; low n6:n3 ratios were observed in O. pinnatifida, Grateloupia turuturu and C. tomentosum. Some seaweed species may be seen as good sources of Ca, K, Mg and Fe, corroborating their good nutritional value. According to FTIR-ATR spectra, G. turuturu was associated with carrageenan seaweed producers whereas Gracilaria gracilis and O. pinnatifida were mostly agar producers. In the brown algae, S. muticum and Saccorhiza polyschides, alginates and fucoidans were the main polysaccharides found.
- Chemical composition and nutritive value of Pleurotus citrinopileatus var cornucopiae, P. eryngii, P. salmoneo stramineus, Pholiota nameko and Hericium erinaceusPublication . Rodrigues, Dina M. F.; Freitas, Ana C.; Rocha-Santos, Teresa A. P.; Vasconcelos, Marta W.; Roriz, Mariana; Rodríguez-Alcalá, Luís M.; Gomes, Ana M. P.; Duarte, Armando C.The chemical composition and nutritive value of five mushrooms species, some less studied such as Pleurotus citrinopileatus var. cornucopiae, P. salmoneo stramineus or Pholiota nameko, were determined. Protein, sugar and fat contents ranged between 16.2 to 26.6, 52.7 to 64.9 and 2.3 to 3.5 g/100g(dry mushroom), respectively. Highest total phenolic content was observed for P. citrinopileatus var. cornucopiae with 1140 mu g cathecol equiv./g(dry mushroom). Higher content in mono and polyunsaturated fatty acids (FA) than saturated FA characterized mushrooms FA profile with high linoleic acid concentration (> 30 gFA/100g(fat)). In addition, these mushrooms may be considered good sources of K, Mg, P, highlighting K (2627-3736 mg/Kg(dry mushroom)) as the most predominant, and of Zn, Cu and Fe; some contributing over 15 % of their recommended daily intakes. beta-glucans, alpha-glucans and evidence of glucan-protein complexes were identified by FTIR-ATR. The reported values emphasize the nutritional potential of the five species to be consumed in a healthy diet.