Influence of Silica Nanoparticles on Antioxidant Potential of Bacillus subtilis IMV B-7023

Iryna O Skorochod; Alla O Roy; Ivan K Kurdish

doi:10.1186/s11671-016-1348-2

Influence of Silica Nanoparticles on Antioxidant Potential of Bacillus subtilis IMV B-7023

Nanoscale Res Lett. 2016 Dec;11(1):139. doi: 10.1186/s11671-016-1348-2. Epub 2016 Mar 12.

Authors

Iryna O Skorochod¹, Alla O Roy², Ivan K Kurdish²

Affiliations

¹ Department of Microbiological Processes on Solid Surfaces, Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, 154, Acad. Zabolotny St., Kyiv, MSP, D03680, Ukraine. aphalina.85@mail.ru.
² Department of Microbiological Processes on Solid Surfaces, Zabolotny Institute of Microbiology and Virology, National Academy of Sciences of Ukraine, 154, Acad. Zabolotny St., Kyiv, MSP, D03680, Ukraine.

Abstract

It was found that if introduced into a nutrient medium of 0.05-1 g/L nano-SiO2, the oxidant activity (OA) of the culture medium (CM) of bacilli increased by 43.2-60.1 % and the antioxidant activity (AA) decreased by 4.5-11.8 %. SiO2 nanoparticles had different effects on antiradical activity (ARA) of the CM of Bacillus subtilis IMV B-7023. In particular, nano-SiO2 had no significant effect on the ability of the CM of bacilli to inactivate the 2.2-diphenyl-1-picrylhydrazyl (DPPH·) free radical. However, for the content of the nanomaterial of 0.01-1 g/L decreased hydroxyl radical scavenging in the CM of B. subtilis IMV B-7023 on 7.2-17.6 % compared with a control. Low doses of silica nanoparticles stimulated the reducing power of the CM of bacteria and then highly suppressed it.

Keywords: Antioxidant potential; Bacillus subtilis; Silica nanoparticles.