Preparation and characterization of hybrid cationic hydroxyethyl cellulose/sodium alginate polyelectrolyte antimicrobial films

Abstract

This study aimed to develop polyelectrolyte‐structured antimicrobial food packaging materials that do not contain any antimicrobial agents. Cationic hydroxyethyl cellulose was synthesized and characterized by Fourier‐transform infrared, 1H NMR, and 13C NMR spectroscopy. Its nitrogen content was determined by Kjeldahl method. Polyelectrolyte‐structured antimicrobial food packaging materials were prepared using hydroxyethyl cellulose, cationic hydroxyethyl cellulose, and sodium alginate. Antimicrobial activity of materials was defined by inhibition zone method (disc diffusion method). Thermal stability of samples was evaluated by thermal gravimetric analysis and differential scanning calorimetry. Surface morphology of samples was investigated by SEM. The obtained results prove that produced food packaging materials have good thermal and antimicrobial properties, and they can be used as food packaging material in many industries.

Biocompatible agar/xanthan gum composite films: Thermal, mechanical, UV, and water barrier properties

“…Composite is the best way to improve a film's properties. Generally, hydrogel films with improved properties are obtainable by blending with some other biopolymers . Biopolymers‐based composites are soft materials consisting of a unique network structure with interesting characteristics, such as mechanical, optical, and swelling/de‐swelling properties.…”

“…Generally, hydrogel films with improved properties are obtainable by blending with some other biopolymers. [14][15][16][17][18] Biopolymers-based composites are soft materials consisting of a unique network structure with interesting characteristics, such as mechanical, optical, and swelling/de-swelling properties. However, brittleness and other properties such as low thermal stability, gas barrier properties, and poor solvent resistance of the pure polymer are often insufficient for food packaging applications.…”

Hydrogen purification using natural zeolite‐loaded hydroxyethyl cellulose membrane

“…However, this peak almost disappears as the amount of zeolite increases 42 . The peaks at 1050 to 1045 cm −1 represent the CO stretching vibration of anhydro glucose units in HEC 43 . Although there is a slight decrease in the peak intensity with the increase in zeolite ratio, the presence of the CO peak in all membranes indicates the homogeneous phase formation between HEC and zeolite.…”

Encapsulation Systems for Antimicrobial Food Packaging Components: An Update

“…In a similar way to chitosan, a polycation, also other bio-based polymers can be used for the development of antimicrobial food packaging as some studies show that polyelectrolytes (polycations and polyanions) have antimicrobial properties [28]. Taking this into consideration, multilayer films composed of alginate, a natural anionic polymer, and cationic hydroxyethyl cellulose, a water soluble film-forming polymer, have been developed as a new packaging material with intrinsic antimicrobial properties [28]. In vitro testing has shown that, depending on the formulation and design used, these films are active against both Gram-positive (S. aureus) and Gram-negative bacteria (E. coli).…”