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Among its most valuable bioactive compounds are the pigment fucoxanthin and polysaccharides (e.g., fucoidans). In this study, we profiled the photosynthetic pigments and carbohydrates of F. vesiculosus from six locations along the \u00cdlhavo Channel in the Iberian coastal lagoon of Ria de Aveiro, Portugal. Photosynthetic performance (Fv\/Fm), pigment, and carbohydrate concentrations were similar between locations, despite differences in environmental factors, such as salinity and periods of exposure to desiccation. Concentration of total carbohydrates (neutral sugars + uronic acids) averaged 418 mg g\u22121 dw. Fucose was the second most abundant neutral sugar, with an average concentration of 60.7 mg g\u22121 dw, indicating a high content of fucoidans. Photosynthetic pigments included chlorophylls a and c, \u03b2,\u03b2-carotene, and the xanthophylls fucoxanthin, violaxanthin, antheraxanthin, and zeaxanthin. Concentrations of fucoxanthin were higher than those reported for most brown macroalgae, averaging 0.58 mg g\u22121 dw (65% of total carotenoids). This study indicates that F. vesiculosus from Ria de Aveiro is a valuable macroalgal resource for aquaculture companies operating in the region, with considerable potential to yield high-value bioactive compounds.<\/jats:p>","DOI":"10.3390\/plants12061324","type":"journal-article","created":{"date-parts":[[2023,3,15]],"date-time":"2023-03-15T04:39:45Z","timestamp":1678855185000},"page":"1324","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Photosynthetic Pigment and Carbohydrate Profiling of Fucus vesiculosus from an Iberian Coastal Lagoon"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9901-9067","authenticated-orcid":false,"given":"Ana C. R.","family":"Resende","sequence":"first","affiliation":[{"name":"Laboratory for Innovation and Sustainability of Marine Biological Resources (ECOMARE), Centre for Environmental and Marine Studies (CESAM), Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4925-4418","authenticated-orcid":false,"given":"Rui","family":"Pereira","sequence":"additional","affiliation":[{"name":"A4F\u2014Algae for Future Lda., Campus do Lumiar, Estrada do Pa\u00e7o do Lumiar, Edif\u00edcio E R\/C, 1649-038 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7217-2790","authenticated-orcid":false,"given":"Cl\u00e1udia","family":"Nunes","sequence":"additional","affiliation":[{"name":"Aveiro Institute of Materials (CICECO), Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4775-8161","authenticated-orcid":false,"given":"S\u00f3nia","family":"Cruz","sequence":"additional","affiliation":[{"name":"ECOMARE, CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1670-9335","authenticated-orcid":false,"given":"Ricardo","family":"Calado","sequence":"additional","affiliation":[{"name":"ECOMARE, CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5088-843X","authenticated-orcid":false,"given":"Paulo","family":"Cartaxana","sequence":"additional","affiliation":[{"name":"ECOMARE, CESAM, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,15]]},"reference":[{"key":"ref_1","unstructured":"European Commission (2023, January 10). 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