Superior antibacterial activity of GlcN-AuNP-GO by ultraviolet irradiation
- Authors
- Govindaraju, Saravanan; Samal, Monica; Yun, Kyusik
- Issue Date
- 1-Dec-2016
- Publisher
- ELSEVIER
- Keywords
- Gold nanoparticles; Graphene oxide; Glucosamine; Ultraviolet irradiation; Antibacterial activity; Morphological study
- Citation
- MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, v.69, pp.366 - 372
- Journal Title
- MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
- Volume
- 69
- Start Page
- 366
- End Page
- 372
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7591
- DOI
- 10.1016/j.msec.2016.06.052
- ISSN
- 0928-4931
- Abstract
- A complete bacterialysis analysis of glucosamine-gold nanoparticle-graphene oxide (GIcN-AuNP-GO) and UV-irradiated GIcN-AuNP-GO was conducted. Analytical characterization of GlcN-AuNPs, GO and GIcN-AuNP-GO revealed UV-Vis absorbance peak at around 230 and 500 nm. Microscopic characterization of prepared nanomaterials was performed by scanning electron microscope, atomic force microscopy, and high-resolution transmission microscopy. The results confirmed that the GIcN-AuNPs were uniformly decorated on the surface and edges of graphene sheets. In addition, potent antibacterial activity of GIcN-AuNP-GO that was UV irradiated for 10 min and normal GIcN-AuNP-GO was detected, compared to the standard drug kanamycin, against both Gram-negative and positive bacteria. The minimum inhibitory concentration (MIC) and fluorescence intensity spectra results for Escherichia colt and Enterococcus faecalis showed that the UV-irradiated GIcN-AuNP-GO has better antibacterial activity than normal GIcN-AuNP-GO and kanamycin. Morphological changes were detected by AFM after treatment. These results confirmed that GIcN-AuNP-GO is a potent antibacterial agent with good potential for use in manufacturing medical instruments, pharmaceutical industries and in waste water treatment (C) 2016 Published by Elsevier B.V.
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