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Multi-level toxicity assessment of engineered cellulose nanofibrils in Daphnia magna
Stockholm Univ, Dept Environm Sci & Analyt Chem, Svante Arrhenius Vag 8, S-11418 Stockholm, Sweden..ORCID iD: 0000-0002-7082-0990
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0002-1631-1781
Stockholm Univ, Dept Environm Sci & Analyt Chem, Svante Arrhenius Vag 8, S-11418 Stockholm, Sweden..
Stockholm Univ, Dept Environm Sci & Analyt Chem, Svante Arrhenius Vag 8, S-11418 Stockholm, Sweden..
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2018 (English)In: Nanotoxicology, ISSN 1743-5390, E-ISSN 1743-5404, Vol. 12, no 6, p. 509-521Article in journal (Refereed) Published
Abstract [en]

Cellulose nanofibril (CNF)-based materials are increasingly used in industrial and commercial applications. However, the impacts of CNF on aquatic life are poorly understood, and there are concerns regarding their potential toxicity. Using a combination of standard ecotoxicological tests and feeding experiments, we assessed the effects of CNF exposure (0.206-20.6 mg/L) on the feeding (food uptake and gut residence time) and life-history traits (growth and reproduction) in the cladoceran Daphnia magna. No mortality was observed in a 48 h acute exposure at 2060 mg/L. Moreover, a 21-day exposure at low food and moderate CNF levels induced a stimulatory effect on growth, likely driven by increased filtration efficiency, and, possibly, partial assimilation of the CNF by the animals. However, at low food levels and the highest CNF concentrations, growth and reproduction were negatively affected. These responses were linked to caloric restriction caused by dilution of the food source, but not an obstruction of the alimentary canal. Finally, no apparent translocation of CNF past the alimentary canal was detected. We conclude that CNF displays a low toxic potential to filter-feeding organisms and the expected environmental risks are low.

Place, publisher, year, edition, pages
Taylor & Francis, 2018. Vol. 12, no 6, p. 509-521
Keywords [en]
Cellulose nanofibrils, Daphnia magna, feeding, caloric restriction, toxicity
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-240193DOI: 10.1080/17435390.2018.1464229ISI: 000439981600002PubMedID: 29732936Scopus ID: 2-s2.0-85046465659OAI: oai:DiVA.org:kth-240193DiVA, id: diva2:1277705
Note

QC 20190111

Available from: 2019-01-11 Created: 2019-01-11 Last updated: 2019-01-11Bibliographically approved

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Edlund, UlricaNavarro, Julien R. G.

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