Simple and effective purification approach to dissociate mixed water-insoluble α- and β-D-glucans and its application on the medicinal mushroom Fomitopsis betulina

Liana Inara de Jesus, Fhernanda R. Smiderle, Lucimara M.C. Cordeiro, Rilton A. de Freitas, Leo J.L.D. van Griensven, Marcello Iacomini*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

Differences in anomericity and in the branching degree of glucans lead to characteristic intermolecular association that influences their solubility in water or other solvents. A simple purification approach, based on the glucan solubility in aq. 0.1 M NaOH solution, was applied for the separation of mixed water-insoluble α-D-glucans from β-D-glucans extracted from fruiting bodies of Fomitopsis betulina, which is an underexploited medicinal mushroom. The results indicated that the β-D-glucan is constituted by (1→3)-linked β-D-Glcp units substituted at O-6 by non-reducing β-D-Glcp and (1→6)-linked β-D-Glcp units, while the α-D-glucan has a linear (1→3)-linked glucan structure. Thus, the 0.1 M NaOH treatment proved to be a simple, efficient and low-cost purification method for separation of water-insoluble glucans with different anomeric configurations and degree of branching that were interacting by intermolecular forces.

Original languageEnglish
Pages (from-to)353-360
JournalCarbohydrate Polymers
Volume200
DOIs
Publication statusPublished - 15 Nov 2018

Keywords

  • Fomitopsis betulina
  • NaOH treatment
  • Structural characterization
  • α- and β-D-glucans

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