Preparation of Chitosan- Zinc Oxide- Thyme Essential Oil Nanocomposite Film, Study on Mechanical, Structural and Antimicrobial Properties

Document Type : Original Article

Authors

1 Department of Conservation Food Science and Technology, Safadasht Branch, Islamic Azad University, Safadasht, Iran

2 Department of Conservation Food Science and Technology, Islamic Azad University, Safadasht, Iran

3 Graduate master, Department of Food Science and Technology, Faculty of Agriculture, Institute of higher education Afagh

Abstract

Biodegradable packaging is a good alternative to synthetic film in the packaging industry because of its environmental-friendly. In this study, zinc oxide nanoparticles and thyme oil were used to enhance the structural properties of chitosan, which were produced for the purpose of chitosan - zinc oxide (0.01- 0.03%)  - thyme essential oil (0.25- 0.5%) nanocomposite. The differences between the synthesized samples with control film (blank) are for production of antibacterial and biodegradable packaging, the structural properties were investigated by infrared spectroscopy and X-ray diffraction, also the morphology of the synthesized particles was investigated by scanning electron microscopy. The results of the structural properties showed that the zinc oxide synthesized in the chitosan polymer matrix were nanoparticles. Based on the results, the water solubility and water vapor permeability of films decreased by 70% with increasing zinc oxide concentration and thyme essential oil. The interaction between chitosan, zinc oxide nanoparticles and thyme essential oil was confirmed by infrared spectroscopy and X-ray diffraction pattern. The findings of this study are an important factor for expanding the use of biodegradation films by improving their functional properties by nanoparticles.

Keywords

References

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History

  • Receive Date: 22 December 2019
  • Revise Date: 20 January 2020
  • Accept Date: 20 February 2020
  • Publish Date: 20 March 2020

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