Quantification of methomyl levels in cabbage, tomato, and soya milk using a renewable amperometric biosensor
Loading...
External sources
External sources
Date
Advisor
Coadvisor
Graduate program
Undergraduate course
Journal Title
Journal ISSN
Volume Title
Publisher
Type
Article
Access right
Acesso aberto
External sources
External sources
Abstract
An enzymatic biosensor based on inhibition of acetylcholinesterase activity was developed to analyze methomyl contamination in different matrices. The detection limits under optimal working conditions were found to be 30.4 μg L-1 methomyl using the biosensor and 0.15 μg L-1 using HPLC. The biosensor was then applied to analysis of methomyl in fruit and vegetable samples at concentrations in the ppb range in the absence of sample pretreatment. Recovery levels using the biosensor were effective, ranging from 78.0 to 96.5%, while the HPLC method yielded 57.0 to 99.5% recovery. Results for total carbamate concentrations obtained using the acetylcholinesterase biosensor were compared to those obtained using HPLC. © 2013 by ESG.
Description
Keywords
Biosensor, Food analysis, Methomyl, Pesticides
Language
English
Citation
International Journal of Electrochemical Science, v. 8, n. 6, p. 7795-7805, 2013.
