Use of gamma irradiation technology for modification of bacterial cellulose nanocrystals/chitosan nanocomposite film

Mahdieh Salari; Mahmoud Sowti Khiabani; Reza Rezaei Mokarram; Babak Ghanbarzadeh; Hossein Samadi Kafil

doi:10.1016/j.carbpol.2020.117144

Use of gamma irradiation technology for modification of bacterial cellulose nanocrystals/chitosan nanocomposite film

Carbohydr Polym. 2021 Feb 1:253:117144. doi: 10.1016/j.carbpol.2020.117144. Epub 2020 Oct 14.

Authors

Mahdieh Salari¹, Mahmoud Sowti Khiabani², Reza Rezaei Mokarram¹, Babak Ghanbarzadeh³, Hossein Samadi Kafil⁴

Affiliations

¹ Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P.O. Box 51666-16471, Tabriz, Iran.
² Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P.O. Box 51666-16471, Tabriz, Iran. Electronic address: m.sowti@tabrizu.ac.ir.
³ Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, P.O. Box 51666-16471, Tabriz, Iran; Department of Food Engineering, Faculty of Engineering, Near East University, Nicosia, Cyprus, Mersin 10, Turkey.
⁴ Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.

PMID: 33278962
DOI: 10.1016/j.carbpol.2020.117144

Abstract

The objective of this work was to investigate the influence of different gamma ray dosages (5, 10, and 10 kGy) on the structural, mechanical, surface and barrier properties of chitosan (Ch) based nanocomposite film. The results showed gamma irradiation caused an increase in the surface hydrophobicity, water vapor permeability and sensitivity of films to water and also, yellowness and opacity of films increased, simultaneously. By increasing the irradiation doses up to 10 kGy, the mechanical properties of Ch/BCNC film was significantly enhanced. As observed by FTIR spectra, no change occurred in the chemical functional groups of the films during irradiation. XRD studies confirmed that crystallinity of films was increased after irradiation. The nanocomposite film irradiated by 10 kGy had the highest thermal stability. In conclusion, gamma radiation can be considered as a safe method for sterilization of foods and modification of Ch/BCNC film properties.

Keywords: Cellulose nanocrystal; Chitosan; Gamma irradiation.

MeSH terms

Biodegradable Plastics / chemistry
Biodegradable Plastics / radiation effects
Cellulose / chemistry
Cellulose / radiation effects*
Chitosan / chemistry
Chitosan / radiation effects*
Color
Food Packaging / methods
Gamma Rays*
Hydrophobic and Hydrophilic Interactions / radiation effects
Nanocomposites / chemistry*
Nanocomposites / radiation effects*
Nanoparticles / chemistry
Nanoparticles / radiation effects*
Permeability / radiation effects
Polysaccharides, Bacterial / chemistry
Polysaccharides, Bacterial / radiation effects*
Solubility
Steam
Surface Properties / radiation effects
Tensile Strength
Water / chemistry

Substances

Biodegradable Plastics
Polysaccharides, Bacterial
Steam
Water
Cellulose
Chitosan