Chitin and derivative chitosan-based structures — Preparation strategies aided by deep eutectic solvents: A review

Mohammad Khajavian, Vahid Vatanpour*, Roberto Castro-Muñoz, Grzegorz Boczkaj

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

143 Citations (Scopus)

Abstract

The high molecular weight of chitin, as a biopolymer, challenges its extraction due to its insolubility in the solvents. Also, chitosan, as the N-deacetylated form of chitin, can be employed as a primary material for different industries. The low mechanical stability and poor plasticity of chitosan films, as a result of incompatible interaction between chitosan and the used solvent, have limited its industrialization. Deep eutectic solvents (DESs), as novel solvents, can solve the extraction difficulties of chitin, and the low mechanical stability and weak plasticity of chitosan films. Also, DESs can be considered for the different chitosan and chitin productions, including chitin nanocrystal and nanofiber, N,N,N-trimethyl-chitosan, chitosan-based imprinted structures, and DES-chitosan-based beads and monoliths. This review aims to focus on the preparation and characterization (chemistry and morphology) of DES-chitin-based and DES-chitosan-based structures to understand the influence of the incorporation of DESs into the chitin and chitosan structure.

Original languageEnglish
Article number118702
JournalCarbohydrate Polymers
Volume275
DOIs
Publication statusPublished - 1 Jan 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

  • Chemistry and morphology
  • Chitin
  • Chitosan
  • Deep eutectic solvents
  • Green chemistry
  • Production process

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