Effects of Fe/SDS and Au nanoparticles on P. aeruginosa bacterial growth and biosurfactant production

IET Nanobiotechnology
Neda AlamdarFatemeh Yazdian

Abstract

The aim of this study was to evaluate the effects of iron (Fe)/SDS and gold (Au) nanoparticles on growth and biosurfactant production of Pseudomonas aeruginosa PBCC5. The concentrations of the nanoparticles used were 1, 500 and 1000 mg/l. In this research, the surface tension of biosurfactant, dry weight of biosurfactant and biomass, emulsification indexes (E24) were measured and transmission electron microscopy analysis was used to monitor the nanoparticles. The test results showed that the effect of nanoparticles on the bacterial growth and biosurfactant production varied corresponding to the type and concentration of nanoparticles. Fe/SDS nanoparticles showed no bacterial toxicity when the concentration of nanoparticles was 1 mg/ml and increased the growth and biosurfactant production, 23.21 and 20.73%, respectively. While at higher concentrations (500, 1000 mg/l), the nanoparticles suppressed bacterial growth as well as biosurfactant production. Similarly, Au nanoparticles had no bacterial toxicity and also increased bacterial growth and biosurfactant production. The surface tensions of all samples decreased from 72 of distiled water to 32-35 mN/m.

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Citations

Aug 3, 2019·PeerJ·Shabana Wagi, Ambreen Ahmed
Nov 23, 2019·Environmental Science and Pollution Research International·Soltan SabaghianNabiallah Mansouri
Nov 27, 2019·Journal of Molecular Modeling·Soltan SabaghianNabiallah Mansouri
Nov 19, 2020·Engineering in Life Sciences·Glayol ModabberHamid Rashedi

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