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Bioprospecting Marine Plankton
Mar. Drugs 2013, 11(11), 4612-4627; doi:10.3390/md11114612

Simultaneous Extraction and Depolymerization of Fucoidan from Sargassum muticum in Aqueous Media

1,2,*  and 1,2
1 Department of Chemical Engineering, University of Vigo (Campus Ourense), Polytechnical Building, As Lagoas, Ourense 32004, Spain 2 Research Transfer and Innovation Centre (CITI), University of Vigo, Tecnopole, Rúa Galicia n° 2, Ourense 32900, Spain
* Author to whom correspondence should be addressed.
Received: 9 October 2013 / Revised: 4 November 2013 / Accepted: 5 November 2013 / Published: 21 November 2013
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The biomass components of the invasive seaweed Sargassum muticum were fractionated to allow their separate valorization. S. muticum (Sm) and the solid residue remaining after alginate extraction of this seaweed (AESm) were processed with hot, compressed water (hydrothermal processing) to assess the effects of temperature on fucoidan solubilization. Fucose-containing oligosaccharides were identified as reaction products. Operating under optimal conditions (170 °C), up to 62 and 85 wt% of the dry mass of Sm and AESm were solubilized, respectively. The reaction media were subjected to precipitation, nanofiltration and freeze-drying. The dried products contained 50% and 85% of the fucoidan present in Sm and AESm, respectively; together with other components such as phenolics and inorganic components. The saccharidic fraction, accounting for up to 35% of the dried extracts, contained fucose as the main sugar, and also galactose, xylose, glucose and mannose. The concentrates were characterized for antioxidant activity using the TEAC assay.
Keywords: Sargassum muticum; hydrothermal treatment; alginate; fucoidan Sargassum muticum; hydrothermal treatment; alginate; fucoidan
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Balboa, E.M.; Rivas, S.; Moure, A.; Domínguez, H.; Parajó, J.C. Simultaneous Extraction and Depolymerization of Fucoidan from Sargassum muticum in Aqueous Media. Mar. Drugs 2013, 11, 4612-4627.

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