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

Khajavian M., Vatanpour Sargheın V., Castro-Munoz R., Boczkaj G.

CARBOHYDRATE POLYMERS, vol.275, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Review
  • Volume: 275
  • Publication Date: 2022
  • Doi Number: 10.1016/j.carbpol.2021.118702
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, EMBASE, Food Science & Technology Abstracts, MEDLINE, Veterinary Science Database
  • Keywords: Chitin, Chitosan, Deep eutectic solvents, Production process, Chemistry and morphology, Green chemistry, MOLECULAR-WEIGHT CHITIN, CARBON NANOTUBES, HIGH-PURITY, FILMS, EXTRACTION, ADSORPTION, MEMBRANES, SHELLS, GREEN, ACID
  • Istanbul Technical University Affiliated: Yes


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-chitosanbased 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.