Iranian Journal of Biosystem Engineering

Iranian Journal of Biosystem Engineering

Production and investigating the physical, mechanical and anti-microbial characteristics of LDPE nano-composite packaging films incorporating Ag, ZnO and Cuo nanoparticles

Document Type : Research Paper

Authors
S.H. Peighambardoust 1
Samira Dehghani 2
Seyed Jamaleddin Peighambardoust 3
1 Associate Prof., Department of Food Science, College of Agriculture, University of Tabriz
2 Department of Food Science, College of Agriculture, University of Tabriz, Tabriz, IRAN
3 Department of Chemical & Petroleum Engineering, University of Tabriz, Tabriz, IRAN
10.22059/ijbse.2015.57340
Abstract
The main objective of this study was to produce LDPE active films containing metallic nanoparticles (Ag, ZnO and CuO) and to investigate their physical, mechanical and anti-microbial characteristics. Three types of metallic nanoparticles at concentrations of 1% (w/w) were added to low density polyethylene (LDPE) and the films were prepared using melt extrusion technique. SEM results indicated rather uniform distribution of nanoparticles in polymeric matrix. Ag containing film showed highest tensile strength and Cu containing film showed the highest elongation to break values. Films containing ZnO nanoparticles had the highest UV absorption. A 99.9% reduction in Escherichia coli and a 90% reduction in Staphylococcus aureus were observed for films containing all nanoparticles which were evaluated by colony counting. However, ZnO nanoparticles were more effective in retarding the growth of S. areus and Ag and Cuo were more effective for E. coli.
Keywords
Active packaging
Antimicrobial
Ag
CuO
ZnO nanoparticles
Subjects
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Iranian Journal of Biosystem Engineering
Volume 46, Issue 4 - Serial Number 4
Winter 2016
Pages 347-354

  • Receive Date 07 April 2015
  • Revise Date 30 May 2015
  • Accept Date 13 June 2015