New approach in electrochemical immunomagnetic biosensors for protein detection

Abstract

The simple, sensitive, and selective method for electrochemical detection of ovalbumin is presented. This method is a combination of the selective immunocomplex formation on the surface of magnetic carriers for easy manipulation and preconcentration with a very sensitive electrochemical detection. The evaluation of antigen content is based on electrochemical detection of quantum dots as labels of secondary antibodies, which allows detecting of low amounts of target antigen.