| Autor: |
Subramaniyan, Prathipkumar1 (AUTHOR), Subramaniyan, Vijayakumar1,2 (AUTHOR) svijaya_kumar2579@rediff.com, Renganathan, Sangeetha3 (AUTHOR), Elavarasan, Vidhya2 (AUTHOR), Al-Ansari, Mysoon M.4 (AUTHOR), Aldawsari, Majdoleen4 (AUTHOR), Prabhakaran Kala, Praseetha5 (AUTHOR), Kim, Woong6 (AUTHOR) |
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| Zdroj: |
Environmental Research. Sep2023, Vol. 233, pN.PAG-N.PAG. 1p. |
| Abstrakt: |
The modern food sector demands versatile nanocomposites of polymers for food to wrappers to inactivate germs linked to foods in order to ensure quality throughout the packaging process. Recently, it has become quite appealing to use zinc oxide nanocomposite with polyvinyl alcohol (PVA) assistance for food storage containers. Variable combinations of zinc acetate and Capparis zeylanica leaf extract (3:1, 1:7, 1:3, and 1:1) were used to create nanostructured ZnO at the desired pH (10.5). ZnO/PVA nanocomposites films were created with different weight % of (16, 13, 9 and 5%) ZnO nanoparticles by using solution casting method. The generated ZnO and ZnO/PVA nanocomposites (NCs) were characterized using analytical techniques like X-ray diffraction spectroscopy (XRD), ultraviolet spectroscopic analysis (UV–Vis), Fourier-transform infrared analysis (FT-IR), and field emission scanning electron microscopic study (FE-SEM). The generated ZnO and ZnO/PVA NCs were tested for their efficacy as antibacterial agents against Gram + ve (Streptococcus pyogenes , Staphylococcus aureus) and Gram -ve (Pseudomonas aeruginosa , and E. coli) bacteria. Under UV–visible irradiation, the methylene blue (MB) breakdown caused by the fabricated undoped ZnO and ZnO/PVA nanomixture was investigated. The FE-SEM investigation for synthesized ZnO from a 1:1 ratio exhibited spherical shaped appearance. However, the nanocomposite made with 5% ZnO showed equally scattered nanoflake particles in the matrix of PVA film as well as on the surface. The XRD results showed that ZnO synthesized with a higher proportion of plant extract produced smaller crystallites, whereas ZnO synthesized with a lower percentage of plant extract produced bigger crystallite sizes. The optimum concentration for the breakdown of methylene blue (MB) among the various concentrations examined was 5% ZnO/PVA. Furthermore, a study of the biomedical efficiency of undoped ZnO and ZnO/PVA revealed that 5% ZnO/PVA had the potential antibacterial efficacies. • Biosynthesis of ZnO nanoparticles derived from Capparis zeylanica leaf extract. • The leaf extracts of C. zeylanica aqueous solutions and different concentrations of precursor salt and extract dilutions, ZnO NPs and ZnO/PVA NCs were effectively synthesized. • The ZnO NPs synthesized from 1:1 ratio of the Zinc acetate salt and C. zeylanica leaf extract at pH 10.5 exhibited spherical shaped. • The biosynthesis ZnO/5%PVA nanocomposites have shown excellent Antimicrobial and photocatalytic applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
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