Polymer-free cyclodextrin and natural polymer-cyclodextrin electrospun nanofibers: A comprehensive review on current applications and future perspectives

Carbohydr Polym. 2021 Jul 15:264:118042. doi: 10.1016/j.carbpol.2021.118042. Epub 2021 Apr 8.

Abstract

The present review discusses the use of cyclodextrins and their derivatives to prepare electrospun nanofibers with specific features. Cyclodextrins, owing to their unique capability to form inclusion complexes with hydrophobic and volatile molecules, can indeed facilitate the encapsulation of bioactive compounds in electrospun nanofibers allowing fast-dissolving products for food, biomedical, and pharmaceutical purposes, filtering materials for wastewater and air purification, as well as a variety of other technological applications. Additionally, cyclodextrins can improve the processability of naturally occurring biopolymers helping the fabrication of "green" materials with a strong industrial relevance. Hence, this review provides a comprehensive state-of-the-art of different cyclodextrins-based nanofibers including those made of pure cyclodextrins, of polycyclodextrins, and those made of natural biopolymer functionalized with cyclodextrins. To this end, the advantages and disadvantages of such approaches and their possible applications are investigated along with the current limitations in the exploitation of electrospinning at the industrial level.

Keywords: Cyclodextrins; Electrospinning; Functionalized nanofibers; Inclusion complexes; Natural biopolymers; Polycyclodextrins.

Publication types

  • Review

MeSH terms

  • Biopolymers / chemistry
  • Cellulose / chemistry*
  • Cyclodextrins / chemistry*
  • Drug Compounding / methods
  • Food Industry / methods
  • Humans
  • Hydrophobic and Hydrophilic Interactions
  • Nanofibers / chemistry*
  • Solubility
  • Water Purification / methods

Substances

  • Biopolymers
  • Cyclodextrins
  • cyclodextrin polymer
  • Cellulose