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Comparative ecotoxicity assessment of magnetosomes and magnetite nanoparticles

Raguraman, Varalakshmi, Suthindhiran, K.·2020·International Journal of Environmental Health Research
DOI 10.1080/09603123.2019.1570489
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Abstract

Magnetite nanoparticles (MNPs) are gaining attention because of their biomedical, environmental and industrial applications. However, they have limited uses because of ecotoxicity. On contrast, bacterially synthesized MNPs such as magnetosomes are found to be biocompatible and less toxic due to the lipid bilayer membrane found around magnetite. In this context, this study compares the physio-chemical properties and toxicology effects of MNPs and magnetosomes in different models such as human red blood cells, macrophage cell lines (RAW 264.7), onion root tips ( Allium cepa), Artemia salina (A. salina ) and zebrafish embryo ( Danio rerio ). MNPs showed 38.59% hemolysis whereas the maximum hemolysis induced by magnetosomes was 7.03% for the same concentration (250 μg/ml). The cytotoxicity of MNPs and magnetosomes were 36.01% and 13.4%, respectively, at 250 μg/ml. Onion root tip assay revealed high toxicity when treated with MNPs than magnetosomes. The MNPs were further tested for its toxicity against A. salina and 50% mortality rate was observed. Similarly, notable malformation was seen in zebrafish embryo treated with MNPs. However, magnetosomes did not exhibit any mortality and malformation in A. salina and zebrafish embryo. The study revealed that magnetosomes are safe and do not cause any potential risk to environment compared to synthetic MNPs. Abbreviation: MNPs: Magnetic nanoparticles; ATCC: American Type Culture Collection; MTB: Magnetotactic bacteria; MSR-1: Magnetospir…

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Metadata

Authors
Raguraman, V., & Suthindhiran, K.
Affiliations
Marine Biotechnology and Bioproducts Laboratory, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
Venue
International Journal of Environmental Health Research
Publisher
Informa UK Limited
Published
2019-02-04
Volume
30
Issue
1
Pages
13-25
ISSN
  • 0960-3123
  • 1369-1619
DOI
10.1080/09603123.2019.1570489
Cited by
16
References
1
Language
en

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