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The most eco-friendly approach for extracting carotenoid is through supercritical carbon dioxide extraction, as it yields highly concentrated extracts while preventing pigment thermal degradation. However, there are limitations when a lipophilic extract is considered a food ingredient, in particular very difficult handling and low solubility in water-based products. The aim of this study was to develop a hydrosoluble form of a natural carotenoid-rich extract recovered from algae biomass within a biorefinery concept to be incorporated in aqueous-based food products. A two-step process was developed, starting with the emulsification of the supercritical extract into a mixture of maltodextrin and gum arabic, using soy lecithin as an emulsifier. The emulsification was followed by a spray-drying step. The impact of process variables on the encapsulation yield, efficiency, emulsion properties, and particle characteristics was studied. The resulting particles exhibited an intense orange color and good water dispersibility, facilitating uniform yellow coloring when incorporated into an aqueous-based product. Overall, spray-drying emulsions containing carotenoids derived from Dunaliella salina prove to be a promising strategy for the global market demand for natural colorants.<\/jats:p>","DOI":"10.3390\/colorants3010003","type":"journal-article","created":{"date-parts":[[2024,1,12]],"date-time":"2024-01-12T09:24:11Z","timestamp":1705051451000},"page":"39-52","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Development of a Carotenoid-Rich Microalgae Colorant by Microencapsulation"],"prefix":"10.3390","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8842-1509","authenticated-orcid":false,"given":"Ana N.","family":"Nunes","sequence":"first","affiliation":[{"name":"iBET, Instituto de Biologia Experimental e Tecnol\u00f3gica, Apartado 12, 2781-901 Oeiras, Portugal"},{"name":"ITQB, Instituto de Tecnologia Qu\u00edmica e Biol\u00f3gica Ant\u00f3nio Xavier, Universidade Nova de Lisboa, Av. da Rep\u00fablica, 2780-157 Oeiras, Portugal"}]},{"given":"Joana","family":"Monte","sequence":"additional","affiliation":[{"name":"iBET, Instituto de Biologia Experimental e Tecnol\u00f3gica, Apartado 12, 2781-901 Oeiras, Portugal"},{"name":"LAQV\/Requimte, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9054-1462","authenticated-orcid":false,"given":"Soraya","family":"Rodr\u00edguez-Rojo","sequence":"additional","affiliation":[{"name":"BioEcoUVa, Research Institute on Bioeconomy\u2014High Pressure Processes Group, Department of Chemical Engineering and Environmental Technology, University of Valladolid, Prado de la Magdalena s\/n, 47011 Valladolid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6138-1172","authenticated-orcid":false,"given":"Isabel D.","family":"Nogueira","sequence":"additional","affiliation":[{"name":"MicroLab, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. 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