Chamomile flower extract-directed CuO nanoparticle formation for its antioxidant and DNA cleavage properties

Mater Sci Eng C Mater Biol Appl. 2016 Mar;60:333-338. doi: 10.1016/j.msec.2015.11.052. Epub 2015 Dec 1.


In this study, we report the synthesis of copper oxide nanoparticles (CuO NPs) using a medicinal plant (Matricaria chamomilla) flower extract as both reducing and capping agent and investigate their antioxidant activity and interaction with plasmid DNA (pBR322).The CuO NPs were characterized using Uv-Vis spectroscopy, FT-IR (Fourier transform infrared spectroscopy), DLS (dynamic light scattering), XRD (X-ray diffraction), EDX (energy-dispersive X-ray) spectroscopy and SEM (scanning electron microscopy). The CuO NPs exhibited nearly mono-distributed and spherical shapes with diameters of 140 nm size. UV-Vis absorption spectrum of CuO NPs gave a broad peak around 285 and 320 nm. The existence of functional groups on the surface of CuO NPs was characterized with FT-IR analysis. XRD pattern showed that the NPs are in the form of a face-centered cubic crystal. Zeta potential value was measured as -20 mV due to the presence of negatively charged functional groups in plant extract. Additionally, we demonstrated concentration-dependent antioxidant activity of CuO NPs and their interaction with plasmid DNA. We assumed that the CuO NPs both cleave and break DNA double helix structure.

Keywords: Characterization; CuO NPs; Green synthesis; Matricaria chamomilla flower extract; Plasmid DNA.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antioxidants / chemistry*
  • Antioxidants / pharmacology
  • Chamomile / chemistry*
  • Copper / chemistry*
  • DNA Cleavage / drug effects
  • Flowers / chemistry*
  • Metal Nanoparticles / chemistry*
  • Plant Extracts / chemistry*
  • Plant Extracts / pharmacology


  • Antioxidants
  • Plant Extracts
  • Copper
  • cuprous oxide