Original article: Use of nano‐clay (Cloisite Na⁺) improves tensile strength and vapour permeability in agar rich red algae (Gelidium corneum)–gelatin composite films

Abstract

In this study, we aimed to improve the physical properties of Gelidium corneum-gelatin (GCG) film by including nano-clay in the film-forming solution and tested the antimicrobial properties of the thymolcontaining composite film as a packaging material for chicken breast. Addition of nano-clay improved the physical properties of GCG film. The tensile strength of the GCG film containing 1% Cloisite Na + was 38.13 MPa, compared to the 26.65 MPa for the GCG film. The water vapour permeability of the GCG film was 3.56 ng m m )2 sPa, while that of the GCG film with 1% Cloisite Na + was 3.24 ng m m )2 sPa. Incorporation of thymol into the film had its antimicrobial activities against Escherichia coli O157:H7 and Listeria monocytogenes. When used to pack chicken breast, the GCG ⁄ nano-clay film containing thymol inhibited microbial growth during storage.

Effect of TiO2 nanoparticles on the physico-mechanical and ultraviolet light barrier properties of fish gelatin/agar bilayer film

“…WVP is one of the most important functional properties of a food storage film (Jang, Lim, & Song, 2010). Low WVP films reduce moisture transfer between the surrounding atmosphere and the food environment, a primary function of food packaging (Gontard, Guilbert, & Cuq, 1992).…”

Impact of nano/micron vegetable carbon black on mechanical, barrier and anti‐photooxidation properties of fish gelatin film

“…WVP is one of the most important functional properties for a food packaging film. 34 Low WVP film has a good water vapour wileyonlinelibrary.com/jsfa barrier property, which could effectively reduce moisture transfer between the surrounding atmosphere and the food environment. The WVP of pure gelatin film, 3000-VCB/GEL film and Nano-VCB/GEL film is shown in Fig.…”

Review of Mechanical Properties, Migration, and Potential Applications in Active Food Packaging Systems Containing Nanoclays and Nanosilver

“…Consequently, a GC‐gelatin (GCG) blend film has been considered as a way to improve the physical properties of GC because gelatin has an excellent film‐forming ability and good physical properties (Cao and others ). Jang and others () investigated the effect of Cloisite‐Na + on the mechanical properties of GCG film. The authors reported that 1% (w/w) of the additive increased the TS of the film and caused a decrease in the EB compared to the control film and this effect is amplified when the concentration is increased from 3% to 5% (w/w).…”