Antimicrobial bio-nanocomposite films based on gelatin, tragacanth, and zinc oxide nanoparticles – Microstructural, mechanical, thermo-physical, and barrier properties

Functional Properties of Gelatin/Polyvinyl Alcohol Films Containing Black Cumin Cake Extract and Zinc Oxide Nanoparticles Produced via Casting Technique

“…Javidi et al [ 43 ] also reported a decrease in the lightness of gelatin nanocomposites owing to the presence of ZnONPs and Mentha piperita extract. Similar observations of color changes were described by Shahvalizadeh et al [ 35 ]. According to their results, with increased content of ZnONPs in the gelatin-tragacanth matrix, L and a values decreased, whereas b values increased (L = 91.87, a = −1.13 and b = −2.60 and L = 88.20, a = −2.73 and b = 2.13 for film without ZnONPs and film with 5% of ZnONPs, respectively).…”

“…Javidi et al [43] also reported a decrease in the lightness of gelatin nanocomposites owing to the presence of ZnONPs and Mentha piperita extract. Similar observations of color changes were described by Shahvalizadeh et al [35]. According to their results, with increased The opacity of the obtained films ranged from 2.60 (control film) to 3.41 (G/PVA/BCCE/ZnONPs).…”

“…This suggests that BCCE in the presence of ZnONPs blocked the intrinsic hydrogen bonds in biopolymer matrix-prolonged tortuous pathways of the water vapor diffusion. Generally, WVP values of the biopolymer films decreased after the addition of ZnONPs, as was reported by Pryidarshi et al [ 33 ], Arfat et al [ 34 ] and Shahvalizadeh et al [ 35 ]. On the other hand, incorporation of grapefruit seed extract could lead to a slight but not significant increase in the WVP in gelatin-based film (0.87 × 10 −9 g·m/m 2 ·Pa·s) in comparison with the control sample (0.84 × 10 −9 g·m/m 2 ·Pa·s) [ 36 ].…”

The synergistic effects of zinc oxide nanoparticles and fennel essential oil on physicochemical, mechanical, and antibacterial properties of potato starch films

“…These nanoparticles have good biocompatibility and thermal stability and are nontoxic (Huang et al., 2017). Researchers have shown that ZnO nanoparticles show strong and significant antibacterial activity against both gram‐positive and gram‐negative bacteria (Shahvalizadeh et al., 2021).…”

Characterization, optimization, and evaluation of preservative efficacy of carboxymethyl cellulose/hydromagnesite stromatolite bio-nanocomposite

“…Recent advances in nanotechnological studies aim to protect against pathogenic microorganisms, prevent emerging infectious diseases, and detect multiple pathogenic bacteria (Baptista et al 2018 ; Ahmed et al 2020 ; Alafeef et al 2020 ; Ghosh et al 2021 ). Antimicrobial, antifungal, and antiviral nanostructures are attractive alternatives due to their biocompatibility and bio-degradability, and their preservative properties in food packaging, textiles, cosmetics, and biomedical applications (Sharma et al 2020 ; Barman et al 2020 ; Shahvalizadeh et al 2021 ; Guo et al 2021 ). Over the past two decades, cosmetic preservatives such as bio-nanocomposites have received great interest against pathogenic microorganisms such as bacteria, fungi, parasites, and viruses (Connolly et al 2019 ; Saadat et al 2020 ).…”