Biomineralization and biosynthesis of nanocrystalline materials and selective uptake of toxic metals controlled by five types of Candida species


Por: Romero-Nunez, Araceli, Gonzalez, Gonzalo, Moreno, Abel, Cuellar-Cruz, Mayra

Publicada: 1 ene 2019
Resumen:
The use of microorganisms for in vivo synthesis of quantum dots (QDs) not only makes it possible to obtain useful materials with tunable characteristics under mild conditions, but can also ensure the removal of toxic heavy metals from polluted water systems. Because real water treatment schemes contain more than one pollutant, this work attempted to determine the responses of Candida to exposure to two cations with known different survival pathways: Pb(ii) and Cd(ii). Five Candida species, C. albicans, C. dubliniensis, C. glabrata, C. krusei, and C. parapsilosis, were exposed to a 1 : 1 mixture of the aforementioned cations. The heterogeneous uptake of each metal was defined for the different strains; the removal of cadmium was greater than that of lead. The specific pathway followed by each cation led to the biomineralization of heterogeneous PbS- and CdS-based QDs located extra- or intra-cellularly. The structures and properties of the obtained heterogeneous nanomaterials were characterized by different techniques, and the results highlight the potential of Candida to form useful materials from a complex metal mixture. © The Royal Society of Chemistry.

Filiaciones:
Romero-Nunez, Araceli:
 Departamento de Biología, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta S/N, Col. Noria Alta, Guanajuato, GTO C.P. 36050, Mexico

 Univ Guanajuato, Dept Biol, Div Ciencias Nat & Exactas, Campus Guanajuato,Noria Alta S-N, Guanajuato 36050, Gto, Mexico

Gonzalez, Gonzalo:
 Departamento de Metálicos y Cerámicos, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior S/N, Col. Universidad Nacional, Coyoacán, 04510, Mexico

 Univ Nacl Autonoma Mexico, Dept Met & Ceramicos, Inst Invest Mat, Circuito Exterior S-N, Coyoacan 04510, Cdmx, Mexico

Moreno, Abel:
 Instituto de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Ciudad Universitaria, Ciudad de México, 04510, Mexico

 Univ Nacl Autonoma Mexico, Inst Quim, Ave Univ 3000,Ciudad Univ, Mexico City 04510, DF, Mexico

Cuellar-Cruz, Mayra:
 Departamento de Biología, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta S/N, Col. Noria Alta, Guanajuato, GTO C.P. 36050, Mexico

 Instituto de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Ciudad Universitaria, Ciudad de México, 04510, Mexico

 Univ Guanajuato, Dept Biol, Div Ciencias Nat & Exactas, Campus Guanajuato,Noria Alta S-N, Guanajuato 36050, Gto, Mexico

 Univ Nacl Autonoma Mexico, Inst Quim, Ave Univ 3000,Ciudad Univ, Mexico City 04510, DF, Mexico
ISSN: 14668033
Editorial
Royal Society of Chemistry, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND, Reino Unido
Tipo de documento: Article
Volumen: 21 Número: 15
Páginas: 2585-2595
WOS Id: 000471033200013