Preparing Xanthan-Chitosan Composites in Glycerol

Dragoljub Bilanovic, Lubov Iliassafov, Eyal Kurzbaum, Robert Armon

Research output: Contribution to journalArticlepeer-review


Anionic xanthan (X) and cationic chitosan (C) form xanthan-chitosan (X+C) complexes by electrostatic attraction in an aquatic environment where concentration of either of the polysaccharides does not exceed 2.5 wt %. Covalently bonded xanthan-chitosan (X−C) composites were prepared in dry glycerol with concentration of either of the polysaccharides in the range 0.025 to 50% weight. In dry glycerol xanthan and chitosan formed covalent bonds via condensation reactions. Carboxyl groups donate OH while amino groups donate H+ to make H2O; water is also condensed in Maillard reactions during crosslinking of both xanthan and chitosan with glycerol. X−C composites were made at xanthan to chitosan ratio in range 0.08 to 26. Porosity of X−C composites decreased with increasing xanthan content and decreasing chitosan content. X−C composites prepared at various xanthan to chitosan ratio showed different H2O absorption, hardness, release and absorption of chemicals, and they differed in other characteristics as well. These results are significant for scientific community, food, material, pharmaceutical, and other fields.

Original languageEnglish
Pages (from-to)6451-6457
Number of pages7
Issue number21
StatePublished - 7 Jun 2019

Bibliographical note

Publisher Copyright:
© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim


  • Chitosan
  • Composite
  • Glycerol
  • Xanthan

ASJC Scopus subject areas

  • General Chemistry


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