Article (Scientific journals)
Isolation, purification, and metal-induced gelation of released polysaccharides from spent culture medium of Arthrospira
Cuellar-Bermudez, Sara P.; Bleus, Dries; Mees, Maarten A. et al.
2023In Algal Research, 70, p. 103010
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Keywords :
Extracellular polysaccharides; Gel rheology; Hydrogel; Limnospira; Spirulina; Ultrafiltration; Agronomy and Crop Science
Abstract :
[en] Cyanobacteria release polysaccharides that accumulate in the culture medium. In this study, released polysaccharides were isolated from the spent culture medium of an Arthrospira farm with a carbohydrate concentration of 136 mg L−1. The polysaccharides were concentrated 5.2 times by ultrafiltration using a 50 kDa polysulphone membrane and purified (desalting, protein removal). The polysaccharides were rich in uronic acid (159 mg g−1), had a low sulfate content (2.3 mg g−1), and contained 9 different monosaccharides, with 2-deoxy-D-galactose (27.9 %), fucose (22.7 %), glucose (22.0 %), and glucuronic acid (17.1 %) being dominant. A 1 % w/v polysaccharide concentrate formed stable gel beads in Al3+ and Fe3+ solutions. Rheological characterization of the gel revealed stable storage (G' = 38 Pa) and loss modulus (G" = 6 Pa) over a wide frequency range. This study demonstrates the feasibility to recover polysaccharides from Arthrospira spent culture medium and the potential to use these polysaccharides in food or biotechnological applications.
Disciplines :
Biochemistry, biophysics & molecular biology
Biotechnology
Microbiology
Author, co-author :
Cuellar-Bermudez, Sara P.;  Laboratory of Aquatic Biology, KU Leuven, Kortrijk, Belgium ; Proteomic and Microbiology Department, University of Mons, Mons, Belgium
Bleus, Dries;  Analytical and Circular Chemistry (ACC), Institute for Materials Research, Hasselt University, Hasselt, Belgium
Mees, Maarten A.;  Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, Kortrijk, Belgium
Struyf, Tom;  Lab of Molecular Plant Biology, Leuven, Belgium ; KU Leuven Plant Institute, Leuven, Belgium
Lama, Sanjaya;  Analytical and Circular Chemistry (ACC), Institute for Materials Research, Hasselt University, Hasselt, Belgium
Vandamme, Dries;  Analytical and Circular Chemistry (ACC), Institute for Materials Research, Hasselt University, Hasselt, Belgium
Adriaensens, Peter;  Analytical and Circular Chemistry (ACC), Institute for Materials Research, Hasselt University, Hasselt, Belgium
Scherrers, Roger;  Wyatt Technology Europe GmbH, Dernbach, Germany
Thielemans, Wim;  Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, Kortrijk, Belgium
Van den Ende, Wim;  Lab of Molecular Plant Biology, Leuven, Belgium ; KU Leuven Plant Institute, Leuven, Belgium
Wattiez, Ruddy  ;  Université de Mons - UMONS
Muylaert, Koenraad;  Laboratory of Aquatic Biology, KU Leuven, Kortrijk, Belgium ; KU Leuven Plant Institute, Leuven, Belgium
Language :
English
Title :
Isolation, purification, and metal-induced gelation of released polysaccharides from spent culture medium of Arthrospira
Publication date :
March 2023
Journal title :
Algal Research
ISSN :
2211-9264
Publisher :
Elsevier B.V.
Volume :
70
Pages :
103010
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
Proteomics and Microbiology
Research institute :
R100 - Institut des Biosciences
Funders :
Interreg
Fonds Wetenschappelijk Onderzoek
Universiteit Hasselt
Funding text :
The authors want to acknowledge the financial support for this work from the EU Interreg France-Wallonie-Vlaanderen program through the ALPO project. The authors also acknowledge Prof. Dr. Erik Smolders of the Soil and Water Management Division at KU Leuven (Leuven) for the ICP analysis. Solid-state 13C CP/MAS spectroscopy has been executed by Gunther Reekmans at UHasselt. This work is supported by Hasselt University and the Research Foundation Flanders (Hercules project AUHL/15/2 - GOH3816N, Project G082121N).The authors want to acknowledge the financial support for this work from the EU Interreg France-Wallonie-Vlaanderen program through the ALPO project. The authors also acknowledge Prof. Dr. Erik Smolders of the Soil and Water Management Division at KU Leuven (Leuven) for the ICP analysis. Solid-state 13C CP/MAS spectroscopy has been executed by Gunther Reekmans at UHasselt. This work is supported by Hasselt University and the Research Foundation Flanders (Hercules project AUHL/15/2 - GOH3816N , Project G082121N ).
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since 31 July 2023

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