期刊
MOLECULES
卷 24, 期 13, 页码 -出版社
MDPI
DOI: 10.3390/molecules24132363
关键词
potassium sorbate; fish scale collagen; polyvinyl alcohol; ultrasonic treatment; composite films; antibacterial activity
资金
- China Scholarship Council, Sichuan Science and Technology Program [2018RZ0034]
- Natural Science Fund of Education Department of Sichuan Province [16ZB0044, 035Z1373]
Composite films containing different amounts of potassium sorbate (KS) were prepared by using fish scale collagen (Col) and polyvinyl alcohol (PVA). Fourier transform infrared spectroscopy (FTIR), light transmittance, mechanical, water vapor transmission rate (WVTR), and the antibacterial properties of the composite films were analyzed. The results showed that the addition of Col significantly reduced the light transmittance of the composite film, but KS had no significant effect on the light transmission. The tensile strength decreased first and then increased with the addition of KS, while the WVTR increased first and then decreased. The composite film exhibited a certain degree of antibacterial properties against E. coli and S. aureus. In addition, we found that ultrasonic treatment reduced the WVTR, and also improved tensile strength and elongation at break of the composite films, but had no significant effect on other properties. The KS/Col/PVA films have the potential to be used as antimicrobial food packaging.
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