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Carbohydr Polym. 2018 Feb 1;181:351-357. doi: 10.1016/j.carbpol.2017.10.045. Epub 2017 Oct 26.

Nanocomposite films based on CMC, okra mucilage and ZnO nanoparticles: Physico mechanical and antibacterial properties.

Author information

1
Food Hygiene and Control Department, Veterinary Medicine Faculty, University of Tehran, Tehran, Iran. Electronic address: m.xebat@gmail.com.
2
Food Hygiene and Control Department, Veterinary Medicine Faculty, University of Tehran, Tehran, Iran. Electronic address: akamkar@ut.ac.ir.
3
Food Hygiene and Control Department, Veterinary Medicine Faculty, University of Tehran, Tehran, Iran.

Abstract

This work examined the physico mechanical parameters and antibacterial activity of CMC/okra mucilage (OM) blend films containing ZnO nanoparticles (NPs). Different proportions of CMC and okra mucilage (100/0; 70/30; 60/40 and 50/50 respectively), were mixed and casted to posterior analysis of formed films. The more colored films were obtained by higher contents of okra mucilage and adding ZnO nanoparticles. The incorporation of ZnO NPs into CMC film decreased the elongation at the break (EB) value of the films and increased the tensile strength (TS) value of the film. With increase in CMC concentration in the films, higher water vapor permeability and higher solubility in water were achieved. Microstructure analysis using SEM showed a smooth and compact surface morphology, homogeneous structure, and a rough surface for CMC, CMC+ZnO, and CMC/OM30%+ZnO, respectively. Nanocomposite films presented antibacterial activity against tested bacteria. Films contained okra mucilage showed more antibacterial activity. The inhibitory activities of resultant films were stronger against S. aureus than E. coli.

KEYWORDS:

Acetone (PubChem ID: 180); Antibacterial activity; CMC; CMC sodium salt (PubChem ID: 6328154); Film properties; Okra mucilage; Sodium Hydroxide (PubChem ID: 14798); Zinc sulfate (PubChem ID: 24424); ZnO NPs

PMID:
29253983
DOI:
10.1016/j.carbpol.2017.10.045
[Indexed for MEDLINE]

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