Table 2.

Optimised parameter of porcine DNA biosensor.

Parameters	Optimum amount
Amount of gold nanoparticles	0.05 mg
Amount of silica nanospheres	0.04 mg
% of glutaraldehyde	10
Potassium phosphate buffer concentration	0.05 M
Potassium phosphate buffer pH	pH 7
Ionic strength	1 M
Concentration of DNA probe	1 µM
Immobilization time	24 h
Concentration of HexaFc complex	2 × 10−5 M