Journal
FOOD PACKAGING AND SHELF LIFE
Volume 23, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.fpsl.2020.100462
Keywords
Hydroxyethylcellulose (HEC); Zinc oxide; Food packaging; Antimicrobial
Categories
Funding
- National Key Research and Development Program of China [2018YFC1706200]
- Shanghai Science and Technology Committee Project [18490740400]
- National Natural Science Fund of China [81671586, 31900949]
- Fundamental Research Funds for the Central Universities [2232019D320]
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The study aims to prepare antimicrobial films for food packaging using hydroxyethylcellulose (HEC) biopolymer to decrease environmental problems of synthetic polymer. Different ZnO concentrations (0.05, 0.1, and 0.2 %) were incorporated into HEC. The citric acid (CA) was used as a crosslinker for HEC and the casting method was used to prepare HEC/CA and HEC/CA/ZnO films. The prepared films were characterized by FT-IR, XRD, TGA and SEM. Also, mechanical, wettability and antimicrobial properties were examined. The presence of ZnO particles in the films was confirmed by XRD. SEM showed surface morphological differences between HEC/CA and HEC/CA/ZnO films. HEC/CA/ZnO film inhibited the growth of Staphylococcus aureus (91.4 %) and Escherichia coli (61.7 %) bacteria. Consequently, the prepared films consider a promising material for food packaging application.
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