Environment monitoring, security and food quality control Magnetoresistive-based biosensor for fresh water biotoxins detection

Currently, there is a lack of sensitive, specific and toxicology-related detection systems for biotoxins in food and water. Thus, precise and accurate detection methods should be used to avoid the effect of the occurrence of those compounds. 

The main aim of this project is to develop a multiplex portable nanotechnology platform for the control and monitoring of the presence of potentially hazardous cyanotoxins in in-land water resources such as lakes, ponds, rivers or streams. The challenge is to instantly quantify and detect (on the spot) different types of cyanotoxins, in water samples.  To accomplish this objective, a bio-analytical platform based on magnetoresistive sensors is being used for the detection of cyanotoxins by specific bioligands labeled with magnetic nanoparticles.

Microcystins (MCs) is one of the most important toxic compounds group produced by cyanobacteria that grow in freshwater ecosystems. A new detection method for MCs based on a platform of magnetoresistive sensors is being currently developed by using an indirect biorecognition strategy.

*with Verónica C. Martins, Dmitri Petrovykh, Albert Ng



From: B. Espiña, V. C. Martins, M. Bañobre-López, P. P. Freitas, J. Rivas. Nanotechnology applications in aquatic toxins. Chapter 20. In: Seafood and Freshwater Toxins: Pharmacology, physiology and detection. Third edition. Editor: Luis M. Botana. Publisher: CRC (Taylor & Francis group) in press