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Implications of recovery procedures on structural and rheological properties of schizophyllan produced from date syrup
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2017 (English)In: International Journal of Biological Macromolecules, ISSN 0141-8130, E-ISSN 1879-0003, Vol. 105, p. 36-44Article in journal (Refereed) Published
Abstract [en]

This study investigates the effects of different recovery procedures on high molar mass schizophyl-Ian produced by Schizophyllum commune using low value agricultural residues. Recovered extracellular polysaccharides (EPSs) were compared in terms of purity, sugar composition, degree of branching, molecular weight, and rheological properties. Performing different recovery methods, such as re-dissolving in water and re-precipitation with ethanol on produced EPS, provided schizophyllan with purity similar to the commercial grade. Besides, Freeze-thawing cycles allowed the fractionation of schizophyllan based on branching degree and solubility. The EPSs with higher purity and lower degree of branching (less conformational flexibility) showed higher viscosity. This study evidences the possibility of producing EPSs with excellent rheological properties using low value agricultural side products. Furthermore, our results demonstrate the importance of recovery methods for tailoring the purity, molecular structure and macroscopic properties of the produced polysaccharides for specific applications.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 105, p. 36-44
Keywords [en]
Schizophyllan, Exopolysaccharide (EPS), Recovery procedure, Rheological properties, Molecular structures
National Category
Biochemistry and Molecular Biology Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-220267DOI: 10.1016/j.ijbiomac.2017.06.110ISI: 000414882900005PubMedID: 28668611Scopus ID: 2-s2.0-85023600986OAI: oai:DiVA.org:kth-220267DiVA, id: diva2:1172522
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QC 20180110

Available from: 2018-01-10 Created: 2018-01-10 Last updated: 2018-01-10Bibliographically approved

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Vilaplana, Francisco

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