Document Detail


Electrochemical detection of amaranth in food based on the enhancement effect of carbon nanotube film.
MedLine Citation:
PMID:  21062012     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Amaranth is widely added to food and can cause many adverse health effects when it is excessively consumed. Therefore, the monitoring of amaranth is quite important. Herein, an electrochemical sensor for the sensitive and rapid detection of amaranth was reported using multiwall carbon nanotube (MWNT) as the sensing film. Due to the large surface area and high accumulation efficiency, the MWNT sensor showed a strong enhancement effect on the oxidation of amaranth, and greatly increased the current signal. The detection conditions such as pH value, amount of MWNT, accumulation potential and time were optimized. The linear range is from 40 nM to 0.8 μM, and the limit of detection is 35 nM. Finally, the new sensor was successfully employed to detect amaranth in soft drinks, and the results were tested by high-performance liquid chromatography.
Authors:
Peng Wang; Xiaozhong Hu; Qin Cheng; Xiaoya Zhao; Xiaofang Fu; Kangbing Wu
Publication Detail:
Type:  Journal Article     Date:  2010-11-09
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  58     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2014-02-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  12112-6     Citation Subset:  IM    
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