期刊
FOODS
卷 10, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/foods10061277
关键词
perillaldehyde; nanofiber; zein; antibacterial activity; preservation
资金
- National Natural Science Foundation of China [31871866, 31972138]
- China Agriculture Research System [CARS-41]
- North Jiangsu Science and Technology Special Project of Jiangsu Province Policy Guidance Program [XZ-SZ202013]
This study prepared five antibacterial nanofiber packaging films with different concentrations of perillaldehyde, and found that the G/Z/P (5:1:0.02) film had good microstructure and thermal stability, effectively inhibiting bacterial growth, suitable for food packaging.
Perillaldehyde is a natural antibacterial agent extracted from perilla essential oil. In our methodology, five antibacterial nanofiber packaging films are prepared by loading different concentrations of perillaldehyde (P) into gelatin/zein (G/Z) polymers. Morphology observations show that the G/Z/P film had a good uniform microstructure and nano-diameter as the weight ratio of 5:1:0.02 (G/Z/P). Fourier transform infrared spectroscopy, and X-ray indicate that these three ingredients had good compatibility and strong interaction via hydrogen bonding. Water contact angle results show that the G/Z/P films gradually change from hydrophilic to hydrophobic with the increase of perillaldehyde. Thermal analysis indicates that the G/Z/P (5:1:0.02) film has good thermal stability. Antibacterial and storage analysis indicates that G/Z/P (5:1:0.02) film is effective to inactivate Staphylococcus aureus and Salmonella enteritidis, and obviously reduces the increasing rate of total bacteria counts and volatile basic nitrogen of chicken breasts. This study indicates that the G/Z/P (5:1:0.02) is a kind of potential antibacterial food packaging film.
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