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<p>In this study, copper nanoflowers were synthesized using <i>Rheum cordatum</i> Losinsk leaf extracts. The synthesized hybrid nanoflowers were systematically evaluated for their antibacterial, antibiofilm, antioxidant, and acetylcholinesterase (AChE) inhibitory properties, as well as their potential in methylene blue (MB) dye removal. According to the obtained results, the nanoflowers demonstrated a 70% removal efficiency for MB dye and exhibited an IC₅₀ value of 55&#xa0;µg/mL for AChE inhibition, 561&#xa0;µg/mL for DPPH, and 411&#xa0;µg/mL for ABTS radical scavenging assays. Compared with the plant extracts, the synthesized nanoflowers showed significantly enhanced antibacterial performance, with a minimum inhibitory concentration (MIC) of 32&#xa0;µg/mL against <i>Staphylococcus aureus</i> and the highest activity against methicillin-resistant <i>S. aureus</i> (MRSA) with an MIC of 256&#xa0;µg/mL. At a concentration of 1024&#xa0;µg/mL, RCL@Cu-hNFs reduced biofilm formation by 70.2% in MRSA and 66.7% in multidrug-resistant <i>Escherichia coli</i>.</p>

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Eco-Friendly Synthesis of Copper Nanoflowers Using Rheum Cordatum Losinsk Leaf Extracts for Photocatalytic Dye Degradation and Biomedical Applications

  • 期刊论文

  • 发表日期：

    2026年1月19日

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  • Metin Yıldırım,
  • Burcu Somtürk Yilmaz,
  • Mehmet Çimentepe,
  • Adem Necip,
  • Adel Asfoor,
  • Büsra Hord

摘要

In this study, copper nanoflowers were synthesized using Rheum cordatum Losinsk leaf extracts. The synthesized hybrid nanoflowers were systematically evaluated for their antibacterial, antibiofilm, antioxidant, and acetylcholinesterase (AChE) inhibitory properties, as well as their potential in methylene blue (MB) dye removal. According to the obtained results, the nanoflowers demonstrated a 70% removal efficiency for MB dye and exhibited an IC₅₀ value of 55 µg/mL for AChE inhibition, 561 µg/mL for DPPH, and 411 µg/mL for ABTS radical scavenging assays. Compared with the plant extracts, the synthesized nanoflowers showed significantly enhanced antibacterial performance, with a minimum inhibitory concentration (MIC) of 32 µg/mL against Staphylococcus aureus and the highest activity against methicillin-resistant S. aureus (MRSA) with an MIC of 256 µg/mL. At a concentration of 1024 µg/mL, RCL@Cu-hNFs reduced biofilm formation by 70.2% in MRSA and 66.7% in multidrug-resistant Escherichia coli.