Safe Ulvan Silver Nanoparticles Composite Films for Active Food Packaging
- 1 Ain Shams University, Egypt
Copyright: © 2021 Hadear Hanie Amin. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Protecting food from the corruption caused by different microbes is a big problem, as we need safe methods for food packaging. In this study, Ulvan (U), edible sulfated polysaccharide extracted from Ulva lactuca, was mediated for the first time non-toxic biosynthesized silver nanoparticles (Ag-NPs) to produce new and safe bio-nanocomposite films called (U/Ag-NPs) films for active food packaging. Ulvan was extracted by hot water-extraction and ethanol-precipitation method and was characterized by FT-IR spectroscopy. Biosynthesis of silver nanoparticles using U. lactuca was proven by Ultra Violet-Visible (UV-VIS), Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) analyses. Investigation of films was by incorporation 1m M of Ag-NPs into different concentrations of ulvan (3, 6 and 12%, w/v). The formation of bio-nanocomposite films was confirmed by FTIR-ATR spectroscopy and TEM analysis. Bio-nanocomposite films were further characterized by physical parameters as water vapor permeability (1.18±0.07, 0.9±0.09 and 0.55±0.1 10−8 g mm cm−2 h−1 Pa−1), film thickness (0.01, 0.03 and 0.08 mm) and contact angle measurements (70.833°, 81.066° and 109.066°) respectively. The bio-nanocomposite films also showed high antimicrobial activity using Kirby-Bauer method as antibacterial and good antioxidant activity with IC50 = 1.128 µg/ml. (U/Ag-NPs) bio-nanocomposite films exhibited good chemical and physical properties, antioxidant and antimicrobial activities making them a potential substitute for active food packaging to extend shelf-life of foods during processing, transportation and storage with no harm as previous packaging methods.
- 154 Views
- 93 Downloads
- 0 Citations
- Ulvan Polysaccharides
- Biosynthesized Silver Nanoparticles
- Bio-Nanocomposite Films
- Food Packaging
- Antimicrobial Activity
- Antioxidant Activity
- Bio Nanotechnology