Journals / Cumhuriyet Science Journal / 2019 / Cilt: 40 - Sayı: 2

Ecotoxic Effects of Cerium Oxide Nanoparticles on Bacteria

Seryum Oksit Nanopartiküllerinin Bakteriler Üzerindeki Ekotoksik Etkileri

Pages
544–553
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results showed an aggregation of NPs relating to both high NP concentrations and high ionic strength of the water solutions.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, the ecotoxic effects of cerium oxide nanoparticles (CeO2 NPs) on both gram positive Bacillus subtilis and gram negative Escherichia coli bacteria were investigated.
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Key Findings & Data:CeO2 NPs were prepared in synthetic water solutions having different water contents (low, median and high ionic strength and conductivity, pH 5.5 and 6.5).
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Conclusion & Impact:Results showed an aggregation of NPs relating to both high NP concentrations and high ionic strength of the water solutions.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, the ecotoxic effects of cerium oxide nanoparticles (CeO2 NPs) on both gram positive Bacillus subtilis and gram negative Escherichia coli bacteria were investigated. CeO2 NPs were prepared in synthetic water solutions having different water contents (low, median and high ionic strength and conductivity, pH 5.5 and 6.5). Bacteria were exposed to CeO2 NP solutions in absence and presence of light conditions for 1 h. Different NP concentrations (10, 100, 500 and 1000 mg/L) were used, and environmental scanning electron microscopy imaging was performed for morphological examination of the bacteria. Results showed an aggregation of NPs relating to both high NP concentrations and high ionic strength of the water solutions. Regardless of the test condition, CeO2 NPs highly inhibited the bacterial growth.

Özet

Bu çalışmada, seryumoksit nanopartiküllerinin (CeO2 NP) gram pozitif Bacillus subtilis ve gram negatif Escherichia coli bakterileri üzerindeki ekotoksik etkileri incelenmiştir. CeO2 NPleri farklı içeriğe sahip (düşük, orta ve yüksek iyonik güç ve iletkenlik, pH 5,5 ve 6,5) sentetik su çözeltileri içinde hazırlanmıştır. Bakteriler ışıklı ve ışıksız ortamlarda CeO2 NPlerine 1 saat süreyle maruz bırakılmıştır. Farklı NP konsantrasyonları (10, 100, 500 and 1000 mg/L) kullanılmış ve çevresel taramalı electron mikroskopi görüntüleme ile bakterilerin morfolojik incelemesi yapılmıştır. Sonuçlar yüksek NP konsantrasyonu ve yüksek iyonik güce bağlı olarak NPlerin agregasyona uğradığını göstermiştir. Test koşullarından bağımsız olarak CeO2 NPleri bakteriyel büyümeyi yüksek oranda inhibe etmiştir.

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Cite This Article

AKÇETİN, M. Ö., ERDEM, A. (2022). Ecotoxic Effects of Cerium Oxide Nanoparticles on Bacteria. Cumhuriyet Science Journal, Cilt: 40 - Sayı: 2, 544–553. https://ajindex.com/articles/477834

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