Data/hora: 05/06/2024 13:58:15

Biblioteca(s): | Embrapa Gado de Leite.
Data corrente: | 18/02/2016
Data da última atualização: | 03/02/2024
Autoria: | MUNK, M.; BRANDAO, H. de M.; NOWAK, S.; MOUTON, L.; GERN, J. C.; GUIMARAES, A. S.; YÉPRÉMIAN, C.; COUTÉ, A.; RAPOSO, N. R. B.; MARCONCINI, J. M.; BRAYNER, R.
Afiliação: | Michele Munk, UFJF; HUMBERTO DE MELLO BRANDAO, CNPGL; Sophie Nowak, University of Paris Diderot, France; Ludovic Mouton, University of Paris Diderot, France; JULIANA CARINE GERN, CNPGL; ALESSANDRO DE SA GUIMARAES, CNPGL; Claude Yéprémian, French National Museum of Natural History, France; Alain Couté, French National Museum of Natural History, France; Nádia R. B. Raposo, UFJF; José M. Marconcini, Brazilian Agricultural Research Corporation, São Carlos, Brasil; Roberta Brayner, University of Paris Diderot, France.
Título: | Direct and indirect toxic effects of cotton-derived cellulose nanofibres on filamentous green algae.
Ano de publicação: | 2015
Fonte/Imprenta: | Ecotoxicology and Environmental Safety, v. 122, p. 399-405, 2015.
Idioma: | Inglês
Conteúdo: | Recently, cellulose nanofibers (CNFs) have attracted considerable attention as natural, abundant polymers with excellent mechanical properties and biodegradability. CNFs provide a new materials platform for the sustainable production of high-performance nano-enable products for various applications. Given the increasing rates of CNF production, the potential for their release to the environment and the subsequent impact on ecosystem is becoming an increasing concern that needs to be addressed. Here, we used the Klebsormidium flaccidum as a bioindicator organism of terrestrial and freshwater habitats pollution using a battery of biomarkers. Our results show that cotton CNFs inhibit the proliferation of algae and induce morphological changes in them. The two main toxicity mechanisms induced by cotton CNFs are: (i) a direct contact of CNFs with the cell wall and cellular membrane and (ii) an indirect effect through the generation of reactive oxygen species (ROS).
Palavras-Chave: | Bioindicator; Klebsormidium flaccidum; Nanoecotoxicology.
Thesaurus Nal: | nanomaterials.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Gado de Leite (CNPGL)
Exemplares: | CNPGL - (22374-1) - UPC - AP - DD -  -  -  - DIS