Biosynthesis of selenium nanoparticles using Klebsiella pneumoniae and their recovery by a simple sterilization process
Braz. j. microbiol
; Braz. j. microbiol;41(2): 461-466, Apr.-June 2010. tab, ilus
Article
em En
| LILACS
| ID: lil-545355
Biblioteca responsável:
BR32.1
ABSTRACT
The use of biologically derived metal nanoparticles for various proposes is going to be an issue of considerable importance; thus, appropriate methods should be developed and tested for the biological synthesis and recovery of these nanoparticles from bacterial cells. In this research study, a strain of Klebsiella pneumoniae was tested for its ability to synthesize elemental selenium nanoparticles from selenium chloride. A broth of Klebsiella pneumoniae culture containing selenium nanoparticles was subjected to sterilization at 121ºC and 17 psi for 20 minutes. Released selenium nanoparticles ranged in size from 100 to 550 nm, with an average size of 245 nm. Our study also showed that no chemical changes occurred in selenium nanoparticles during the wet heat sterilization process. Therefore, the wet heat sterilization process can be used successfully to recover elemental selenium from bacterial cells.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Selênio
/
Esterilização
/
Nanopartículas Metálicas
/
Klebsiella pneumoniae
Idioma:
En
Revista:
Braz. j. microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Irã
País de publicação:
Brasil