Use of a Fractal-like Gold Nanostructure in Surface-Enhanced Raman Spectroscopy for Detection of Selected Food Contaminants

2008 ◽  
Vol 56 (21) ◽  
pp. 9843-9847 ◽  
Author(s):  
Lili He ◽  
Nam-Jung Kim ◽  
Hao Li ◽  
Zhiqiang Hu ◽  
Mengshi Lin
The Analyst ◽  
2014 ◽  
Vol 139 (10) ◽  
pp. 2525-2530 ◽  
Author(s):  
Yu-e Shi ◽  
Limei Li ◽  
Min Yang ◽  
Xiaohong Jiang ◽  
Quanqin Zhao ◽  
...  

A disordered silver nanowires membrane combining solid-phase extraction with surface-enhanced Raman spectroscopy was used for the rapid collection and detection of food contaminants.


2017 ◽  
Author(s):  
Caitlin S. DeJong ◽  
David I. Wang ◽  
Aleksandr Polyakov ◽  
Anita Rogacs ◽  
Steven J. Simske ◽  
...  

Through the direct detection of bacterial volatile organic compounds (VOCs), via surface enhanced Raman spectroscopy (SERS), we report here a reconfigurable assay for the identification and monitoring of bacteria. We demonstrate differentiation between highly clinically relevant organisms: <i>Escherichia coli</i>, <i>Enterobacter cloacae</i>, and <i>Serratia marcescens</i>. This is the first differentiation of bacteria via SERS of bacterial VOC signatures. The assay also detected as few as 10 CFU/ml of <i>E. coli</i> in under 12 hrs, and detected <i>E. coli</i> from whole human blood and human urine in 16 hrs at clinically relevant concentrations of 10<sup>3</sup> CFU/ml and 10<sup>4</sup> CFU/ml, respectively. In addition, the recent emergence of portable Raman spectrometers uniquely allows SERS to bring VOC detection to point-of-care settings for diagnosing bacterial infections.


Sign in / Sign up

Export Citation Format

Share Document