Antimicrobial activities of ZnO powder‐coated PVC film to inactivate food pathogens

Abstract

In this work, the effects of two different amounts of zinc oxide (ZnO) nanoparticles on the antimicrobial activities of poly (vinyl chloride)-based films to inactivate food pathogens were investigated. Results showed that the ZnO-coated film exhibited a good inhibition effect on the growth of Escherichia coli and Staphylococcus aureus and its ability was attributed to the ZnO nanoparticles. The ZnO-coated films exhibited more effective antibacterial activity for S. aureus. However, antifungal activity of the ZnO-coated films (20 mm · 25 mm) against Aspergillus flavus and Penicillium citrinum was not observed. It is likely due to the complexity of the fungal cell wall and the ZnO nanoparticles without UV light irradiated or the insufficient amount of nanoparticles. Our findings reveal that ZnO nanoparticles have a good potential to be coated on a plastic film to make antimicrobial packaging against bacteria such as E. coli and S. aureus.

Whole-cell Escherichia coli-based bio-sensor assay for dual zinc oxide nanoparticle toxicity mechanisms

“…For example these materials have well known antibacterial properties and have been incorporated into anti-bacterial fabrics [2] and orthopaedic cements [3][4][5] with efficacy against Gram negative and Gram positive organisms [6][7][8][9][10][11][12].…”

Zinc Oxide Nanoparticles: Opportunities and Challenges in Veterinary Sciences

“…ZnO NPs have been used as an antimicrobial agent in food packaging [33]. Antibacterial activity of ZnO NPs coated polyvinyl chloride has been observed against E. coli and S. aureus [113].…”

Role and adverse effects of nanomaterials in food technology

“…The label on the packages are improvised with radiofrequency identification display (RFID), this technique is able to track the food product during its transportation and distribution. Antimicrobial activity of ZnO powder coated PVC film with respect to food pathogens revealed that electrostatic interaction between bacterial cell surface and nanoparticles inhibited the growth of pathogens [22]. Nanomaterials like CNT, silicon nanowires, ZnO-nanorods etc, elevated the detection capability of biomolecules [23].…”

“…Depolarization of α-tubulin, disturbing the cellular structure, partial fragmentation of Protein [60] Silver zeolite NMs Produces reactive oxygen species [19] Carbon nanotubes Causes inflammation in neural cells (glial cells), cytokine [87] Dextran coated SPION(20nmand 60 nm) Induced proinflammatory cytokine [86] Colloidal gold NPs (1µM/5µL) Affected electrical activity in retina but no morphological changes [87] …”