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Preparation of alginate-chitosan polyelectrolyte complexes for encapsulation of natural polyphenols

R. STOICA1,* , R. ŞOMOGHI1, S. M. DONCEA1, R. M. ION1,2

Affiliation

  1. National Institute for Research and Development in Chemistry and Petrochemistry - ICECHIM, 202 Splaiul Independenţei, 060021, Bucharest, Romania
  2. Valahia University, Materials Engineering Faculty, 18-20 Unirii Blvd., 130082, Târgovişte, Romania

Abstract

Chitosan-alginate polyelectrolyte complexes (PECs) for polyphenols encapsulation using chitosan polymer and pre-gelated sodium alginate were prepared. Natural polyphenols entrapped in PECs were extracted from rose hips (Rosa canina) with a total phenolic content of 15.8 mg/mL Galic acid equivalents (GAE). The effects of polyphenols concentration and pH on the particle size, zeta potential and release rate were studied. Polyphenol-polyelectrolyte interactions were investigated by Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC). Dynamic light scattering (DLS) analysis showed an average particle size ranged between 962 nm – 2384 nm. Furthermore, the delivery profiles of polyphenols from PECs were assessed..

Keywords

Alginate, Chitosan, Polyelectrolyte complexes, Polyphenols.

Citation

R. STOICA, R. ŞOMOGHI, S. M. DONCEA, R. M. ION, Preparation of alginate-chitosan polyelectrolyte complexes for encapsulation of natural polyphenols, Optoelectronics and Advanced Materials - Rapid Communications, 11, 1-2, January-February 2017, pp.113-118 (2017).

Submitted at: July 19, 2015

Accepted at: Feb. 10, 2017