title: Chemical composition of red, brown and green macroalgae from Buarcos bay in Central West Coast of Portugal.
abstract: 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.
authors: CESAM - Centre for Environmental and Marine Studies & Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal. Electronic address: dinarodrigues@ua.pt.
authors: Dina
authors: D
authors: Rodrigues
authors: CESAM - Centre for Environmental and Marine Studies & Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; ISEIT/Viseu, Instituto Piaget, Estrada do Alto do Gaio, Galifonge, 3515-776 Lordosa, Viseu, Portugal.
authors: Ana C
authors: AC
authors: Freitas
authors: MARE - Marine and Environmental Sciences Centre/IMAR Faculdade de Ciências e Tecnologia, Universidade de Coimbra, 3004-517 Coimbra, Portugal.
authors: Leonel
authors: L
authors: Pereira
authors: CESAM - Centre for Environmental and Marine Studies & Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; ISEIT/Viseu, Instituto Piaget, Estrada do Alto do Gaio, Galifonge, 3515-776 Lordosa, Viseu, Portugal.
authors: Teresa A P
authors: TA
authors: Rocha-Santos
authors: CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Dr. António Bernardino Almeida, 4200-072 Porto, Portugal.
authors: Marta W
authors: MW
authors: Vasconcelos
authors: CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Dr. António Bernardino Almeida, 4200-072 Porto, Portugal.
authors: Mariana
authors: M
authors: Roriz
authors: CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Dr. António Bernardino Almeida, 4200-072 Porto, Portugal.
authors: Luís M
authors: LM
authors: Rodríguez-Alcalá
authors: CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Rua Dr. António Bernardino Almeida, 4200-072 Porto, Portugal.
authors: Ana M P
authors: AM
authors: Gomes
authors: CESAM - Centre for Environmental and Marine Studies & Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
authors: Armando C
authors: AC
authors: Duarte
mesh_terms: D061006:Bays; D000460:Chlorophyta / Q000737:chemistry*; D000459:Phaeophyceae / Q000737:chemistry*; D011174:Portugal; D000461:Rhodophyta / Q000737:chemistry*; D012624:Seaweed / Q000737:chemistry*
keywords: Chemical composition; Elements; FTIR-ATR characterization; Fatty acids; Seaweeds