Enzyme semiconductor sensor based on butyrylcholinesterase

Abstract An enzyme field-effect transistor with a gelatin membrane containing butyrylcholinesterase (BCE) is investigated. The membrane formation procedure and experimental conditions are optimized. The sensor exhibits sensitivity to butyrylcholine in the range 10−4−10−2 mol/l with a response time 2 min. The influence of reversible and irreversible inhibitors on the sensor characteristics is studied.