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 Amperometric Immuno-sensor For Detection Of Toxin Aflatoxin B1 Based On Polyaniline Probe Modified With Mc-IgGs-a-AFB1 Antibodies

Keisham Radhapyari, Raju Khan

Volume 5, Issue 8, Page 435-440, Year 2014 | DOI: 10.5185/amlett.2014.5562

Keywords:

 Immuno-sensor; polyaniline; bovine serum albumin; environmental toxins; aflatoxin B1; electrochemical impedance spectroscopy.

Abstract: 

 An amperometric sensor for detection of toxin aflatoxin B1 from aspergillus flavus based on conducting polyaniline probe using monoclonal anti-aflatoxin B1 (Mc-IgGs-a-AFB1) antibodies after activation with 3% Bovine Serum Albumin (BSA) through electrochemical polymerization has been proposed.  The electrode was fabricated by immobilizing Mc-IgGs-a-AFB1 antibodies molecules onto electrode surface and characterized by cyclic voltammetry (CV), scanning electron microscopy (SEM) and fourier transform infrared spectroscopic (FT-IR) etc. The proposed amperometric immune-sensor has demonstrated excellent electro-analytical properties relative to Aflatoxin B1 in a linear range from 0.20 to 1.30 AngmL-1 with a relatively low detection limit of 0.059 AngmL-1. The present study will help in improving for quantitative determination of mycotoxins in food samples may provide significant improvements in quality control of food safety through a simple, rapid, and sensitive testing system for agricultural products monitoring. Copyright © 2014 VBRI press.

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