1. Curcumin and silver nanoparticles loaded antibacterial multifunctional pectin/gelatin films for food packaging applications.
- Author
-
Li S, Wei N, Wei J, Fang C, Feng T, Liu F, Liu X, and Wu B
- Subjects
- Hydrogen-Ion Concentration, Antioxidants chemistry, Antioxidants pharmacology, Spectroscopy, Fourier Transform Infrared, Microbial Sensitivity Tests, Food Packaging methods, Gelatin chemistry, Silver chemistry, Metal Nanoparticles chemistry, Pectins chemistry, Anti-Bacterial Agents chemistry, Anti-Bacterial Agents pharmacology, Curcumin chemistry, Curcumin pharmacology, Escherichia coli drug effects, Staphylococcus aureus drug effects
- Abstract
Renewable biomass-based materials have a huge potential to replace petroleum-based products in food packaging. Herein, pectin/gelatin films loaded with curcumin and silver nanoparticles (AgNPs) are prepared by solution-pouring technology to serve as antimicrobial multifunctional food packaging films. AgNPs and curcumin are found to equally distribute in the films. Fourier transform infrared spectroscopy (FT-IR) reveal the hydrogen bonding and electrostatic interaction among curcumin, AgNPs, pectin and gelatin. The composite films show good antioxidant activity, mechanical performance, hydrophobicity and antibacterial ability. The films of P-GCA 0.5 showed 99.57 ± 0.16 % and 100 % inhibition against E. coli and S. aureus, respectively. The films also demonstrate excellent water vapor barrier qualities. In addition, the composite films possess pH-responsive color change behaviors from yellow (pH 3-8) to light red (pH 8-9) to dark red (pH 11-12), which is suitable for monitoring the freshness of shrimp packaging based on pH changes during deterioration process. As sustainable biomass-based materials, the multifunctional composite films are promising in intelligent food packaging applications., Competing Interests: Declaration of competing interest The authors declare no conflict of interest., (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Published
- 2024
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