期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 108, 期 -, 页码 1281-1288出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2017.11.046
关键词
ZnO; Chitosan; Nanocomposites; Antifungal activity; Candida albicans; Cytotoxicity
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2014R1A2A1A11054585]
- Fish Vaccine Research Center - Ministry of Oceans and Fisheries, Korea
In this study, we investigated the antifungal activity and cytotoxicity of ZnO-chitosan nanocomposites (ZnO-C NCs) against Candida albicans and human epithelial type 2 (HEp2) cells, respectively. The crystalline phase, morphology, composition, particle size and optical absorption properties of the synthesized ZnO-C NCs were systematically investigated by various contemporary methods. The X-ray diffraction analysis results showed characteristic diffraction peaks corresponding to both ZnO and chitosan, while field-emission scanning electron microscopy (FESEM) displayed clusters of spherical shaped particulate morphology. UV vis absorption spectra showed a shift in the optical absorption towards lower wavelength for ZnO-C NCs when compared to ZnO nanoparticles (NPs). The antifungal activity results (against C. albicans) showed that the minimum inhibitory concentration of ZnO NPs and ZnO-C NCs were 200 mu g/mL and 75 mu g/mL, respectively, suggesting the greater therapeutic potential of ZnO-C NCs. FESEM analysis results showed the substantial change in the external morphology of C. albicans after treatment with both ZnO NPs and ZnO-C NCs due to the fungal cell membrane damage. ZnO-C NCs displayed lower cytotoxicity with HEp2 cells indicating the good cytocompatibility of the synthesized ZnO-C NCs. It is expected that ZnO and chitosan complement each other and exhibit synergistic effects potential for antimicrobial and biomedical applications. (C) 2017 Elsevier B.V. All rights reserved.
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