Figure 5: Steady-state current responses on the addition of different OTA concentrations in a reaction medium under stirring containing 10 nmol L-1 HRP + 100 μmolL-1 H2O2 in pH 8.00 PBS with a dyalisis membrane covered PBHRFc- CP (8-6-45) biosensor. c*O TA : (1) 30 μmol L-1; (2) 73 μmol L-1; (3) 113 μmol L-1 and (4) 150 μmol L-1