Synthesis, characterization and kinetic study of silver and gold nanoparticles produced by the archaeon Haloferax volcanii.

Autor: Costa MI; Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Biológicas (IIB), Universidad Nacional de Mar del Plata (UNMdP)-Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Mar del Plata, Argentina., Álvarez-Cerimedo MS; Dep. Química, Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMdP-CONICET, Mar del Plata, Argentina., Urquiza D; Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Biológicas (IIB), Universidad Nacional de Mar del Plata (UNMdP)-Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Mar del Plata, Argentina., Ayude MA; Dep. Química, Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMdP-CONICET, Mar del Plata, Argentina., Hoppe CE; Dep. Química, Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMdP-CONICET, Mar del Plata, Argentina., Fasce DP; Dep. Química, Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), UNMdP-CONICET, Mar del Plata, Argentina., De Castro RE; Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Biológicas (IIB), Universidad Nacional de Mar del Plata (UNMdP)-Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Mar del Plata, Argentina., Giménez MI; Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Biológicas (IIB), Universidad Nacional de Mar del Plata (UNMdP)-Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Mar del Plata, Argentina.
Jazyk: angličtina
Zdroj: Journal of applied microbiology [J Appl Microbiol] 2020 Nov; Vol. 129 (5), pp. 1297-1308. Date of Electronic Publication: 2020 Jun 19.
DOI: 10.1111/jam.14726
Abstrakt: Aims: To evaluate the ability of the haloarchaeon Haloferax volcanii to produce Ag and Au nanoparticles (NPs) and to characterize the obtained material in order to find relevant properties for future potential applications.
Methods and Results: Nanoparticles were produced by incubating H. volcanii cells with the corresponding metal salt. In the presence of precursor salts, cultures evidenced a colour change associated to the formation of metallic nanostructures with plasmonic bands located in the visible range of the spectrum. X-ray fluorescence analysis confirmed the presence of Ag and Au in the NPs which were spherical, with average sizes of 25 nmol l -1 (Ag) and 10 nmol l -1 (Au), as determined by electronic microscopy. Fourier transformed infrared spectroscopy indicated that both types of NPs showed a stable protein capping. Ag NPs evidenced antibacterial activity and Au NPs improved the specificity of polymerase chain reaction reactions. Au and Ag NPs were able to reduce 4-nitrophenol when incubated with NaBH 4 .
Conclusions: Haloferax volcanii is able to synthesize metallic NPs with interesting properties for technological applications.
Significance and Impact of the Study: Our data demonstrate the ability of H. volcanii to synthesize metal NPs and constitutes a solid starting point to deepen the study and explore novel applications.
(© 2020 The Society for Applied Microbiology.)
Databáze: MEDLINE
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