Development of Nanochitosan-Based Active Packaging Films Containing Free and Nanoliposome Caraway (Carum Carvi. L) Seed Extract Publisher



Homayounpour P¹ ; Shariatifar N^{2, 3} ; Alizadehsani M²
Source: Food Science and Nutrition Published:2021

Abstract

The biocompatible active films were prepared based on nanochitosan (NCh) containing free and nanoliposome caraway seed extract (NLCE). The produced films were characterized by physico-mechanical, barrier, structural, color, antimicrobial, and antioxidant properties. The average particle size of NLCE was 78–122 nm, and the encapsulation efficiency (EE%) was obtained 49.87%–73.07%. Nanoliposomes with the lowest size and the highest encapsulation efficiency were merged with the film samples. NCh/CE3% and NCh/NLCE3% films had higher stability compared to other films and showed the highest antimicrobial activity (3.68 mm inhibition) and radical quenching capacity (51%), respectively. Likewise, biodegradable active films containing nanoliposomes had lower antimicrobial potential and higher antioxidant capacity than films containing free extract with similar concentration. The Fourier-transform infrared spectroscopy (FTIR) results revealed new interactions between NCh and nanoliposomes. Scanning electron microscopy (SEM) investigation also exhibited a homogenous structure and nearly smooth surface morphology with a good dispersion for NCh/NLCE films. Despite an increase in yellowness (b value) and a decrease in whiteness (L value) index, the incorporation of nanoliposomes within the NCh films improved the mechanical flexibility (from 10.2% to 15.05%) and reduced water vapor permeability (WVP) (from 14.2 × 10–12 g/m·s·Pa to 11.9 × 10–12 g/m·s·Pa). Today, due to the growing trend toward natural ingredients, the use of nanoparticles derived from plant derivatives has expanded in the food industry owing to their antimicrobial and antioxidant properties. © 2020 The Authors. Food Science & Nutrition published by Wiley Periodicals LLC