Synthesis and characterization of novel bactericidal Cu/HPMC BNCs using chemical reduction method for food packaging

Journal of Food Science and Technology
Saeideh Ebrahimiasl, Ataollah Rajabpour

Abstract

In this research copper nanoparticles (Cu NPs) were incorporated in the biodegradable hydroxypropyl methylcellulose (HPMC) matrix using the simple and low cost chemical reduction method for application as food packaging material. The properties of Cu/HPMC bionanocomposites (BNCs) were studied as a function of the CuSO4 concentration. Surface morphology of the film was investigated by scanning electron microscopy. Mechanical analysis and water vapor barrier properties of HPMC/Cu nanocomposites were analyzed. It was observed that mechanical and water vapor barrier properties of the films were improved by the concentration of CuSO4. The antibacterial activity of HPMC/Cu thin films were evaluated based on the diameter of inhibition zone in a disk diffusion test against Gram positive bacteria, ie, Streptococus A., S. epidermidis, S.aureus , B.cereus and Gram negative bacteria, ie, E. coli, E. faecalis, Salmonella, P. aeruginosa using Mueller Hinton agar at different concentration of CuSO4. The results revealed a greater bactericidal effectiveness for nanocomposite films containing 5 % of CuSO4. Packages prepared from HPMC/Cu nanocomposite films were used for meat packaging. The films were filled with meat and then stored at 4 °C. Mi...Continue Reading

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Citations

Sep 11, 2016·Materials Science & Engineering. C, Materials for Biological Applications·Laura TamayoMaritza Páez
Jun 6, 2019·Nanomedicine·Victoria IribarnegarayPaola Scavone
Jan 29, 2020·Applied Microbiology and Biotechnology·Carolina Alves Dos SantosMahendra Rai
Jan 12, 2021·Critical Reviews in Food Science and Nutrition·Yu TianZhouli Wang

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