Document Detail


A novel surface-enhanced Raman scattering sensor to detect prohibited colorants in food by graphene/silver nanocomposite.
MedLine Citation:
PMID:  23141308     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A novel surface-enhanced Raman scattering (SERS) sensor made up of a graphene and silver nanocomposite was developed for detecting prohibited colorants in food. This SERS platform exhibited an excellent enrichment effect between the colorant molecules and the graphene and an ability to enhance the Raman spectra of the silver nanoparticles. Detection of different concentrations of each prohibited colorant was carried out by SERS measurements on this novel substrate. In addition, from the SERS spectra of a mixture of four kinds of prohibited colorants, it was possible to easily distinguish each colorant by its characteristic peaks. A control experiment was also performed to compare the SERS spectra obtained using the graphene/silver nanocomposite substrate with spectra obtained using Ag alone as a substrate. The results showed that the SERS nanocomposite was better for detecting prohibited colorants. The proposed method has advantages in terms of providing a simple and rapid method for the sensitive analysis of prohibited additive colorants in food.
Authors:
Yunfei Xie; Yan Li; Li Niu; Heya Wang; He Qian; Weirong Yao
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Publication Detail:
Type:  Journal Article     Date:  2012-08-04
Journal Detail:
Title:  Talanta     Volume:  100     ISSN:  1873-3573     ISO Abbreviation:  Talanta     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-11-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  32-7     Citation Subset:  IM    
Copyright Information:
Crown Copyright © 2012. Published by Elsevier B.V. All rights reserved.
Affiliation:
State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China; Engineering Laboratory for Modern Analytical Techniques, c/o State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Graduate University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, Jilin, PR China.
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