Nano Archive

In vivo biomodification of lipid-coated carbon nanotubes by Daphnia magna

Roberts, Aaron P. and Mount, Andrew S. and Seda, Brandon and Souther, Justin and Qiao, Rui and Lin, Sijie and Ke, Pu Chun and Rao, Apparao M. and Klaine, Stephen J. (2007) In vivo biomodification of lipid-coated carbon nanotubes by Daphnia magna. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 41 (8). pp. 3025-3029.

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Official URL: http://dx.doi.org/10.1021/es062572a

Abstract

This study examined the interactions between Daphnia magna and a water-soluble, lysophophatidylcholine coated single-walled carbon nanotube. D. magna were able to ingest the nanotubes through normal feeding behavior and utilize the lysophophatidylcholine coating as a food source. D. magna were able to modify the solubility of the nanotube, likely through digestion of the lipid coating. This study provides evidence of biomodification of a carbon-based nanomaterial by an aquatic organism. The modification significantly altered the physical properties of the nanomaterial in freshwater. Acute toxicity was observed only in the highest test concentrations. These are important findings related to determining the behavior and potential toxicity of coated nanomaterials released into the environment.

Item Type:Article
Subjects:Biomedical Science > Nanobiotechnology
Risk > Environment, health and safety aspects of nanotechnology
Material Science > Nanostructured materials
ID Code:3069
Deposited By:Anuj Seth
Deposited On:13 Jan 2009 13:36
Last Modified:13 Jan 2009 13:36

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