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Title: Biosynthesis and recovery of rod-shaped tellurium nanoparticles and their bactericidal activities

Abstract

Highlights: ► Biosynthesis of rod shape tellurium nanoparticles with a hexagonal crystal structure. ► Extraction procedure for isolation of tellurium nanoparticles from Bacillus sp. BZ. ► Extracted tellurium nanoparticles have good bactericidal activity against some bacteria. -- Abstract: In this study, a tellurium-transforming Bacillus sp. BZ was isolated from the Caspian Sea in northern Iran. The isolate was identified by various tests and 16S rDNA analysis, and then used to prepare elemental tellurium nanoparticles. The isolate was subsequently used for the intracellular biosynthesis of elemental tellurium nanoparticles. The biogenic nanoparticles were released by liquid nitrogen and purified by an n-octyl alcohol water extraction system. The shape, size, and composition of the extracted nanoparticles were characterized. The transmission electron micrograph showed rod-shaped nanoparticles with dimensions of about 20 nm × 180 nm. The energy dispersive X-ray and X-ray diffraction spectra respectively demonstrated that the extracted nanoparticles consisted of only tellurium and have a hexagonal crystal structure. This is the first study to demonstrate a biological method for synthesizing rod-shaped elemental tellurium by a Bacillus sp., its extraction and its antibacterial activity against different clinical isolates.

Authors:
; ;  [1];  [2];  [3];  [1]
  1. Department of Pharmaceutical Biotechnology and Biotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451 Tehran (Iran, Islamic Republic of)
  2. Department of Pharmacognosy and Biotechnology, School of Pharmacy, Pharmaceutics Research Center, Kerman University of Medical Sciences, P.O. Box 76175-493 Kerman (Iran, Islamic Republic of)
  3. Department of Medical Biotechnology, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22215613
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 60 APPLIED LIFE SCIENCES; BACILLUS; CASPIAN SEA; CRYSTAL STRUCTURE; ELECTRON MICROSCOPY; EXTRACTION; NANOSTRUCTURES; TELLURIUM; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Zare, Bijan, Faramarzi, Mohammad Ali, Sepehrizadeh, Zargham, Shakibaie, Mojtaba, Rezaie, Sassan, and Shahverdi, Ahmad Reza, E-mail: shahverd@sina.tums.ac.ir. Biosynthesis and recovery of rod-shaped tellurium nanoparticles and their bactericidal activities. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.06.034.
Zare, Bijan, Faramarzi, Mohammad Ali, Sepehrizadeh, Zargham, Shakibaie, Mojtaba, Rezaie, Sassan, & Shahverdi, Ahmad Reza, E-mail: shahverd@sina.tums.ac.ir. Biosynthesis and recovery of rod-shaped tellurium nanoparticles and their bactericidal activities. United States. doi:10.1016/J.MATERRESBULL.2012.06.034.
Zare, Bijan, Faramarzi, Mohammad Ali, Sepehrizadeh, Zargham, Shakibaie, Mojtaba, Rezaie, Sassan, and Shahverdi, Ahmad Reza, E-mail: shahverd@sina.tums.ac.ir. Thu . "Biosynthesis and recovery of rod-shaped tellurium nanoparticles and their bactericidal activities". United States. doi:10.1016/J.MATERRESBULL.2012.06.034.
@article{osti_22215613,
title = {Biosynthesis and recovery of rod-shaped tellurium nanoparticles and their bactericidal activities},
author = {Zare, Bijan and Faramarzi, Mohammad Ali and Sepehrizadeh, Zargham and Shakibaie, Mojtaba and Rezaie, Sassan and Shahverdi, Ahmad Reza, E-mail: shahverd@sina.tums.ac.ir},
abstractNote = {Highlights: ► Biosynthesis of rod shape tellurium nanoparticles with a hexagonal crystal structure. ► Extraction procedure for isolation of tellurium nanoparticles from Bacillus sp. BZ. ► Extracted tellurium nanoparticles have good bactericidal activity against some bacteria. -- Abstract: In this study, a tellurium-transforming Bacillus sp. BZ was isolated from the Caspian Sea in northern Iran. The isolate was identified by various tests and 16S rDNA analysis, and then used to prepare elemental tellurium nanoparticles. The isolate was subsequently used for the intracellular biosynthesis of elemental tellurium nanoparticles. The biogenic nanoparticles were released by liquid nitrogen and purified by an n-octyl alcohol water extraction system. The shape, size, and composition of the extracted nanoparticles were characterized. The transmission electron micrograph showed rod-shaped nanoparticles with dimensions of about 20 nm × 180 nm. The energy dispersive X-ray and X-ray diffraction spectra respectively demonstrated that the extracted nanoparticles consisted of only tellurium and have a hexagonal crystal structure. This is the first study to demonstrate a biological method for synthesizing rod-shaped elemental tellurium by a Bacillus sp., its extraction and its antibacterial activity against different clinical isolates.},
doi = {10.1016/J.MATERRESBULL.2012.06.034},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 11,
volume = 47,
place = {United States},
year = {2012},
month = {11}
}