Recovery of carotenoids from brown seaweeds using aqueous solutions of surface-active ionic liquids and anionic surfactants


Carotenoids are lipophilic compounds and their production is one of the most challenging, yet rewarding, activities in algal biotechnology. Some carotenoids (fucoxanthin included) have antioxidant activity and many studies have confirmed their health benefits. Fucoxanthin is considered as one of the most important intracellular active metabolites present in brown macroalgae. In this work, aqueous solutions of different surface-active ionic liquids and anionic surfactants were evaluated for the carotenoids extraction. Aqueous solutions of sodium dodecyl sulfate were selected as the media with the best extractive performance. For the best solvent, the solid-liquid ratio, concentration, and time of extraction were the conditions optimized and the maximum yield of extraction of carotenoids attained found to be between 2.57 +/- 0.26 mg(carotenoids)/g(dried) mass and 3.31 +/- 0.02 g M mg(carotenoids)/g(dried) mass, depending of the algae batch used. This said, this work proposed an efficient water-based process of carotenoids extraction, for both dried (more 37.4% of carotenoids extracted) and wet (more 30.2% of carotenoids extracted) biomass matrices. (C) 2017 Elsevier B.V. All rights reserved.






Vieira, FA; Guilherme, RJR; Neves, MC; Rego, A; Abreu, MH; Coutinho, JAP; Ventura, SPM

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The authors are grateful for the financial support of international funding from the program Ciencias sem Fronteiras (Brazil) through the post-doctoral grant of Flavia Aparecida Vieira, process number 249485/2013-3. This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. The authors would like to acknowledge COST for funding STSM within CM1206 action (Ref. COST-STSM-ECOST-STSM-CM1206-200114-0 40305). The authors thank FCT for the post-doctoral grant SFRH/BPD/110423/2015 of Marcia C. Neves. Sonia P.M. Ventura acknowledges FCT for the IF contract IF/00402/2015 under the Investigador FCT 2015 program. ALGApIus activities were supported by the project SEACOLORS, LIFE13 ENV/ES/000445.

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