Journal
JOURNAL OF SAUDI CHEMICAL SOCIETY
Volume 21, Issue -, Pages S475-S480Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jscs.2015.01.009
Keywords
Biofabrication; Copper oxide nanoparticles; UV-Vis spectroscopy; TEM; Antioxidant
Categories
Funding
- Prometeo Project of the National Secretariat of Higher Education, Science, Technology and Innovation (SENESCYT), Ecuador
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Biofabrication of copper oxide nanoparticles (CuO-NPs) of a desired size remains a significant challenge. In this report, CuO-NPs were fabricated by treating 10 mM copper nitrate with Andean blackberry fruit (ABF) and leaf (ABL); and evaluated its antioxidant activity. As-prepared NPs characterization were determined by UV-visible spectrophotometry, Dynamic Light Scattering (DLS), transmission electron microscopy (TEM) with selected area electron diffraction (SAED) and X-ray diffraction (XRD) analysis. UV-visible spectroscopy showed an electronic excitonic transition at 250-255 nm clearly reveals the formation of ABF and ABL CuO-NPs. DLS analysis demonstrated mean diameter of ABF CuO-NPs (43.3 nm) smaller than ABL CuO-NPs (52.5 nm). TEM with SAED confirmed the CuO-NPs are spherical and of partial crystalline nature. Furthermore, the antioxidant efficacy of ABF CuO-NPs showed 89.02%, 1 mM whereas ABL CuO-NPs 75.92%, 1 mM against 1,1-diphenyl-2-picrylhydrazyl. From the results obtained it is suggested that green CuO-NPs could be used effectively in future biomedical concerns. (C) 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
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