Chitosan/Prussian blue-based biosensors

Abstract

Chitosan/Prussian blue (PB) based biosensors, including a glucose sensor, a glutamate sensor and a galactose sensor have been developed. The biosensors exhibit excellent performance; in particular, the interference of ascorbic and uric acids can be avoided due to selective permeability of chitosan film and electro-catalysis of the PB layer to H2O2. The biosensors have been applied to detect glucose, galactose and glutamate in human blood serum and fermented solution.