期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 141, 期 -, 页码 545-552出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2019.09.035
关键词
Antibacterial; epsilon-Polylysine; Chitosan; Biofilms
资金
- New Seedling Program of Zhejiang Shuren University [2019XM42011]
- Young Doctor Innovation Program of Zhejiang Shuren University [2019QC22]
Of late, the demand for food-packaging materials, in particular, multifunction packaging materials that are biodegradable; antibacterial; have good mechanical and barrier properties; and are edible and transparent, has increased considerably. In this study, we prepared chitosan (CS)/epsilon-polylysine (PL) biofilms with different CS-to-PL ratios. We studied the preparation, mechanical properties, microstructures, thermal stability, transparency, water-vapor permeability, oil permeability, and antibacterial properties of the composite CS/PL biofilms. The results demonstrate that CS/PL biofilms are mechanically strong, have good thermal stability, high transparency, low water-vapor and oil permeability, and extensive antibacterial properties that act against Escherichia coli, Bacillus subtilis, and yeast. Therefore, we therefore conclude that CS/PL biofilms are promising food-packaging materials. (C) 2019 Elsevier B.V. All rights reserved
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