Active packaging of Lighvan cheese with nanocomposite films based on LDPE-metallic nanoparticles and modeling the migration of nano silver

Document Type : Research Paper

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Abstract

Lighvan cheese is one of the most popular Iranian cheeses that always faces to microbial problems due to traditional ways of production. In this study the effect of two types of low density polyethylene-nanocamposite films contains of Ag, CuO and ZnO nanoparticles with different percentage increasing the shelf-life of chesse in 4̊C was investigated. Microbial tests of the packed cheeses were done immediately after packaging (at day 0) and after 7, 14, 21, 28 and 60 days of storage. After 60 days storage, the growth rate of Coliforms and Staphylococcus aureus significantly decreased (p<0.05) as a result of application of nanocomposite package containing equal percentage of nanometals (sample 1) but it did not affect Lactic acid bacteria's growth. The results of migration tests of nano metal particels from packaging in to food simulant showed that nano composite contain metal nanoparticle is safe according to limitation set by FDA and EFSA. Also migration modeling for nano silver in 12 months have done.

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References

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Iranian Journal of Biosystems Engineering
Volume 47, Issue 4 - Serial Number 4
January 2017
Pages 676-667

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History

  • Receive Date: 30 January 2016
  • Revise Date: 26 May 2016
  • Accept Date: 23 October 2016

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