|Table of Contents|

Biomineral synthesis of nano-selenium with Escherichia coli MG1655 as intermediary(PDF)

《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

Issue:
2017年03期
Page:
52-57
Research Field:
Publishing date:

Info

Title:
Biomineral synthesis of nano-selenium with Escherichia coli MG1655 as intermediary
Author(s):
WU Tong12WANG Zhenjiong2HUA Chun2ZHOU Feng2WANG Renlei3HUANG He1
1. College of Biotechnology and Pharmaceutical Engineering,Nanjing Tech University,Nanjing 211800,China; 2. School of Food Science,Nanjing Xiaozhuang College,Nanjing 211171,China; 3. Biology Department,Jiangsu Second Normal University,Nanjing 210013,China
Keywords:
Escherichia coli MG1655 sodium selenite nano-selenium characterization
PACS:
Q936
DOI:
10.3969/j.issn.1671-7627.2017.03.010
Abstract:
The reduction with Escherichia coli MG1655 of sodium selenite was used to prepare nano-selenium with different mass concentrations of sodium selenite as selenium source artificially.The influence of sodium selenite mass concentration on the growth curve of Escherichia coli MG1655 was investigated.The reduction efficiency of sodium selenite was determined by hydride generation atomic fluorescence spectrometry(HG-AFS),and the structure of the product was characterized by scanning electron microscope(SEM),X-ray diffraction(XRD)and Fourier transform infrared spectroscopy(FT-IR).Results indicated that sodium selenite could be biomineralized in abundance by Escherichia coli MG1655 to nano-selenium particles in red simple substance with their diameters mainly 100~250 nm.Moreover,all the reduction rates of various mass concentrations of sodium selenite solution were over 50%.

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Last Update: 2017-05-31