Green biosynthesis of magnetic iron oxide (Fe3O4) nanoparticles using the aqueous extracts of food processing wastes under photo-catalyzed condition and investigation of their antimicrobial and antioxidant activity
In this study, a simple, rapid, and eco-friendly green method was introduced to synthesize magnetite iron oxide nanoparticles (Fe3O4 NPs) using the aqueous extracts of two food processing wastes, namely silky hairs of corn (Zea mays L.) and outer leaves of Chinese cabbage (Brassica rapa L. subsp. pe...
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Veröffentlicht in: | Journal of photochemistry and photobiology. B, Biology Biology, 2017-08, Vol.173, p.291-300 |
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Sprache: | eng |
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Zusammenfassung: | In this study, a simple, rapid, and eco-friendly green method was introduced to synthesize magnetite iron oxide nanoparticles (Fe3O4 NPs) using the aqueous extracts of two food processing wastes, namely silky hairs of corn (Zea mays L.) and outer leaves of Chinese cabbage (Brassica rapa L. subsp. pekinensis). The boiled solutions of silky hairs (MH) and outer leaves of Chinese cabbage (CCP) were used to synthesize Fe3O4 NPs under photo exposed condition. The MH-FeNPs and CCP-FeNPs synthesized via green route were characterized by UV–Vis spectroscopy, field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), differential thermogravimetric (TG/DTG) analysis, and vibrating sample magnetometer (VSM) analysis. The UV–Visible spectra displayed two absorption bands at 325nm and 375mm for the MH-FeNPs, and 325mm and 365mm for the CCP-FeNPs, respectively. The estimated absolute crystallite sizes of the MH-FeNPs and CCP-FeNPs were calculated to be 84.81 and 48.91nm, respectively. VSM analysis revealed that both FeNPs were superparamagnetic in nature. Both FeNPs mixed with kanamycin and rifampicin displayed positive synergistic antibacterial activity against pathogenic foodborne bacteria (9.36–24.42mm inhibition zones), and those mixed with amphotericin b also exerted synergistic anticandidal activity against five different pathogenic Candida species (9.81–17.68mm inhibition zones). Both FeNPs exhibited strong antioxidant activities; therefore, all the properties of the green synthesized MH-FeNPs and CCP-FeNPs using food processing wastes could be beneficial for their potential applications in various fields such as drug delivery, antibacterial and anticandidal drugs, and biomedical fields.
•Fe3O4 NPs synthesized by aqueous extracts of food waste.•UV–Vis spectra displayed absorption bands at 325, 365, and 375mm.•Estimated absolute crystallite size of MH-FeNPs (84.81nm) and CCP-FeNPs (48.91nm)•VSM analysis revealed both FeNPs were superparamagnetic in nature.•FeNPs displayed promising antibacterial, anticandidal, and antioxidant activity. |
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ISSN: | 1011-1344 1873-2682 |
DOI: | 10.1016/j.jphotobiol.2017.05.045 |