Application of Cold Plasma Treatment to Produce Low Density Polyethylene/ Myofibrillar Protein Bilayer Films Containing Green Tea Extract

Raeesi, Raziye; Shabanpour, Bahareh; Khani, Mohammad Reza; Pourashouri, Parastoo; Tajiknezhad, Samira; Shokri, Babak

doi:10.48311/jfst.2025.79577.0

Application of Cold Plasma Treatment to Produce Low Density Polyethylene/ Myofibrillar Protein Bilayer Films Containing Green Tea Extract

Document Type : Original Research

Authors

Raziye Raeesi ¹

Bahareh Shabanpour ¹

Mohammad Reza Khani ²

Parastoo Pourashouri ¹

Samira tajiknezhad ³

Babak Shokri ²

¹ Department of Seafood Processing, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

² Department of Physics, Iran and Laser-Plasma Research Institute, Shahid Beheshti University, Tehran, Iran

³ Department of Physics, Faculty of Sciences, Gonbad Kavous University, Gonbad Kavous, Iran

10.48311/jfst.2025.79577.0

Abstract

In this study, plasma treatment was used to surface modification of low-density polyethylene film, which was then coated with fish myofibril protein containing green tea extract and subjected to plasma treatment again. The properties of the bilayer films (including: contact angle, thickness, water solubility, mechanical and water vapor permeability) were measured before and after plasma treatment. The results showed that plasma treatment led to a significant decrease in the water vapor permeability of the films. Also, the water contact angle of the films increased significantly after plasma treatment from 55/73Ë±1/54 to 85/3Ë±1/25, indicating a decrease in the hydrophilicity of the films. However, all results were below 90Ë and thus, the surface is still hydrophilic. The results of the solubility analysis did not show any significant difference between the films treated and untreated with plasma (it decreased from 17.02 ± 0.621% to 12.74 ± 0.205%). The mechanical properties of the films after plasma treatment did not show any significant difference, indicating that plasma treatment did not have a significant effect on the overall flexibility of the films. According to the results obtained, plasma treatment has a high potential in modifying the properties of the films, and its parameters should be adjusted according to the type of film to achieve the desired results.

Keywords

Low density polyethylene

Bilayer film

Coating

Plasma treatment

Green tea extract

Active packaging

Subjects