Journal
RSC ADVANCES
Volume 7, Issue 57, Pages 36081-36092Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra05027e
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Funding
- Ministry of Education, Science and Technological Development of the Republic of Serbia [172003, III 46010]
- multilateral scientific and technological cooperation in the Danube region [DS021]
- SASPRO Programme [1237/02/02-b]
- People Programme (Marie Curie Actions) European Union's Seventh Framework Programme under REA [609427]
- Slovak Academy of Sciences
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Curcumin and its derivates are well-known for their different biological activities including antibacterial. On the other hand there are controversial reports concerning the antibacterial potential of graphene and, in particular, graphene oxide. In this study we have reported for the first time the antibacterial activity of curcumin/graphene nanomesh hybrids under ambient light conditions. The graphene nanomesh was synthesized by electrochemical exfoliation of highly oriented pyrolytic graphite in 1 M solution of ammonium persulfate and further functionalized by curcumin. Identical values of minimum inhibitory concentration (1 mg mL(-1)) were determined for pure curcumin and curcumin/graphene nanomesh hybrids toward Staphylococcus aureus. All tested samples had more pronounced antibacterial activity against Gram positive bacteria, Staphylococcus aureus compared to Escherichia coli as a representative of Gram negative strains. The poor antibacterial potential of exfoliated graphene improves significantly by the functionalization with curcumin, which allows for its usage as a antibacterial coating.
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