期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 223, 期 -, 页码 404-417出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2022.10.282
关键词
Anthocyanin; Tea polyphenol; Polyvinyl alcohol; Sodium carboxymethyl cellulose; Freshness indication; Multifunctional packaging
资金
- Fundamental Research Funds for the Central Universities [2572018BL09]
- Heilongjiang Provincial Natural Science Foundation Project [LH2019E001]
- China Postdoctoral Science Foundation [2016M590273]
A multifunctional food packaging film based on PVA, CMC, TP, and CA was developed, which exhibited excellent physical and functional properties, including extended shelf life and real-time freshness monitoring for food. The non-toxic and biodegradable nature of the film makes it highly promising as a new multifunctional food packaging material in the future.
Multifunctional food packaging films were developed based on polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (CMC), tea polyphenol (TP) and black carrot anthocyanin (CA). Results of Zeta potential, scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction showed that CA enhanced the stability of the particle dispersion system through hydrogen bonding and electrostatic interactions, promoted the compatibility between TP and PVA-CMC (PC) substrates, and enhanced the binding between the components of the films. Because of the interaction of TP and CA, PC-TP-CA films had better water resistance and water vapor barrier properties, thermal stability, antioxidant and antimicrobial properties. PC-CA and PC-TP-CA films exhibited excellent UV-blocking properties. They also showed distinct color responsiveness in the pH range of 2-13, significant sensitivity to ammonia vapor in a short period of time and excellent color stability over 20 days of storage under different conditions. When the film was applied to fish, it was found that PC-TP-CA film could extend the shelf life of fish by 1-2 days and successfully monitor the freshness of the fish in real-time. Consid-ering all the physical and functional properties, the non-toxic and biodegradable PC-TP-CA film has excellent potential as a new multifunctional food packaging material in the future.
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