Preparation of polysaccharide-based nanoparticles by chitosan and flaxseed gum polyelectrolyte complexation as carriers for bighead carp (Aristichthys nobilis) peptide delivery

Int J Biol Macromol. 2023 Sep 30:249:126121. doi: 10.1016/j.ijbiomac.2023.126121. Epub 2023 Aug 3.

Abstract

Polysaccharide-based nanoparticles formed by the polyelectrolyte complexation between chitosan (CS) and flaxseed gum (FG) was developed in this work, and it was further used as a carrier for bighead carp peptide (BCP) delivery. The CS molecular weight (MW) of 50 kDa and CS/FG mass ratio of 1:2 at pH 3.5 were optimal conditions for the NP preparation, with the minimum particle size (∼155.1 nm) and the maximum BCP encapsulation efficiency (60.3 %). The BCP-loaded CS/FG NPs exhibited the smallest particle size (175.8 nm). Both CS/FG NPs and CS/FG-BCP NPs exhibited roughly uniform spherical shape. FT-IR spectra confirmed the existence of hydrogen bonds and electrostatic interactions in the nanoparticles. The BCP-loaded NPs displayed a higher thermal stability than BCP. Moreover, the release of BCP was controllable and dose-dependent, following a first-order kinetics model. These findings suggested that our CS/FG NPs are a promising carrier for bioactive peptide delivery.

Keywords: Bighead carp peptide; Chitosan; Control release; Flaxseed gum; Polyelectrolyte complexation.

MeSH terms

  • Animals
  • Carps*
  • Chitosan* / chemistry
  • Drug Carriers / chemistry
  • Flax*
  • Nanoparticles* / chemistry
  • Particle Size
  • Peptides / chemistry
  • Polyelectrolytes
  • Polysaccharides
  • Spectroscopy, Fourier Transform Infrared

Substances

  • Drug Carriers
  • Polyelectrolytes
  • Chitosan
  • Polysaccharides
  • Peptides