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Antifungal activity of titanium dioxide nanoparticles against Candida albicans


Ahmad, Nurul Shahidah and Abdullah, Norhafizah and Md Yasin, Faizah (2019) Antifungal activity of titanium dioxide nanoparticles against Candida albicans. BioResources, 14 (4). pp. 8866-8878. ISSN 1930-2126


The unregulated release of titanium dioxide nanoparticles into the environment has raised concern, in particular due to the impact of the nanoparticles on indigenous micro-biome in our ecosystem. This paper reports a study on antifungal activity of titanium dioxide nanoparticles on a healthy growing fungi species, Candida albicans, a known opportunistic pathogen. A quantification of the total cell death was performed using a direct staining method, Trypan blue exclusion assay. Exposure to nanoparticles not only altered the growth rate, but also affected the onset and length of Candida albicans growth phases. The log and the onset of the death phase were shortened and accelerated, respectively. Up to 65% of the Candida albicans were killed after exposure to 100 μg/mL of the anatase titanium dioxide nanoparticles, while only 33% were killed with rutile. A higher dosage and incubation time of the nanoparticles increased their toxicity. Cells suffered from morphological changes upon the nanoparticle exposure, which correlates well with the results showing an altered growth phase culture.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Publisher: North Carolina State University
Keywords: Titanium dioxide; Trypan blue exclusion assay; Candida albicans; Antifungal activity; Growth rate
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 12 Nov 2020 00:43
Last Modified: 12 Nov 2020 00:43
URI: http://psasir.upm.edu.my/id/eprint/80672
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