Cesarino_2012_Food.Chem_135_873

Reference

Title : Electrochemical detection of carbamate pesticides in fruit and vegetables with a biosensor based on acetylcholinesterase immobilised on a composite of polyaniline-carbon nanotubes - Cesarino_2012_Food.Chem_135_873
Author(s) : Cesarino I , Moraes FC , Lanza MR , Machado SA
Ref : Food Chem , 135 :873 , 2012
Abstract :

A sensitive electrochemical acetylcholinesterase (AChE) biosensor was successfully developed on polyaniline (PANI) and multi-walled carbon nanotubes (MWCNTs) core-shell modified glassy carbon electrode (GC), and used to detect carbamate pesticides in fruit and vegetables (apple, broccoli and cabbage). The pesticide biosensors were applied in the detection of carbaryl and methomyl pesticides in food samples using chronoamperometry (CA). The GC/MWCNT/PANI/AChE biosensor exhibited detection limits of 1.4 and 0.95mumolL(-1), respectively, for carbaryl and methomyl. These detection limits were below the allowable concentrations set by Brazilian regulation standards for the samples in which these pesticides were analysed. Reproducibility and repeatability values of 2.6% and 3.2%, respectively, were obtained in the conventional procedure. The proposed biosensor was successfully applied in the determination of carbamate pesticides in cabbage, broccoli and apple samples without any spiking procedure. The obtained results were in full agreement with those from the HPLC procedure.

PubMedSearch : Cesarino_2012_Food.Chem_135_873
PubMedID: 22953799

Related information

Citations formats

Cesarino I, Moraes FC, Lanza MR, Machado SA (2012)
Electrochemical detection of carbamate pesticides in fruit and vegetables with a biosensor based on acetylcholinesterase immobilised on a composite of polyaniline-carbon nanotubes
Food Chem 135 :873

Cesarino I, Moraes FC, Lanza MR, Machado SA (2012)
Food Chem 135 :873