Journal
FOOD CHEMISTRY
Volume 308, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.125682
Keywords
Antifogging; Antibacterial; Food packaging; Quaternary ammonium chitosan
Funding
- National Key Research and Development Program of China [2018YFD0401302]
- National Natural Science Foundation of China [21975019]
- Beijing Science Technology New Star Cross Subject [2018019]
- Beijing National Science Foundation [2172039]
- Fundamental Research Funds for the Central Universities
- University of Science and Technology Beijing (USTB)
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In this work, a multifunctional food packaging composite coating with transparent, biodegradable, antifogging and antibacterial properties was designed and fabricated by quaternary ammonium salt modified chitosan (HACC) and poly (vinyl alcohol) (PVA) via a facile and environment-friendly solution casting method. A simple quaternization modification enabled the coating simultaneously to achieve excellent antifogging and antibacterial functions. The excellent antifogging property of the HACC/PVA composite coating was attributed to the strong water absorbency of quaternary ammonium chitosan and PVA. A nearly 98% transmittance ratio of coated glasses was achieved during antifogging test. In addition, the inhibition rate of the HACC/PVA composite coating kill against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Botrytis cinerea were up to similar to 99%. The antibacterial effect was demonstrated by each group of strawberries after storage for 1, 3, 5 days. The multifunctional coating has broad prospects in the application of fruit and vegetable packaging.
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