This research demonstrates the potential of copper nanoparticles synthesized from amaranthus extract, highlighting their antioxidant and antimicrobial properties.
The present study focuses on the eco-friendly synthesis and characterization of copper nanoparticles (CuNPs) using Amaranthus plant extract as a reducing and stabilizing agent. Phytochemicals in the extract, including flavonoids, phenols, and proteins, facilitated nanoparticle formation, confirmed by color change from blue to brown. The nanoparticles were characterized using UV–Vis spectroscopy, IR spectroscopy, particle size analysis, and zeta potential measurements. UV analysis showed a peak at 213 nm, while FTIR confirmed the presence of hydroxyl, carbonyl, and amine groups stabilizing the nanoparticles. The average particle size was 122.6 nm with a zeta potential of –0.2 mV, suggesting stability. Antioxidant activity by DPPH assay showed 91.2% inhibition at 1000 µL, close to standard ascorbic acid (93.1%). Antimicrobial assays revealed moderate activity against Streptococcus oralis, with an inhibition zone of 12 mm. The study highlights the biomedical potential of Amaranthus-mediated CuNPs as promising antioxidant and antimicrobial agents.
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Kendre et al. (2025) studied this question.
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