Portable bioactive paper-based sensor for quantification of pesticides

A paper-based biosensor was developed for the detection of the degradation products of organophosphorus pesticides. the biosensor quantifies acetylcholine esterase inhibitors in a fast,disposable,cheap,and accurate format. we specifically focused on the use of sugar or protein stabilizer to achieve a biosensor with long shelf-life. the new biosensor detected malathion with a detection limit of 2.5 ppm in 5 min incubation time. the operational stability was confirmed by testing 60 days storage at 4°c when glucose was used as stabilizer. © 2013 murat kavruk et al.