Table 2.

The main results obtained in real samples using a biosensor based on the Ppy/GOx/DGNs/GR electrode.

Real Samples	Current Responses * (%)				Glucose Concentration (mmol L−1)		Recovery Ratio (%)
	AA (mmol L−1)		UA (mmol L−1)		Added	Detected (n = 4)
	0.01	0.05	0.01	0.1
Human serum	102	102	104	116	2.42	2.38	98.3
					7.48	7.36	98.4
					11.0	10.9	99.1
Saliva	102	104	105	113	1.00	0.98	98.0
					9.92	9.78	98.6
Wine	100	103	–	–	2.99	2.85	95.3
					6.10	5.86	96.1
Coconut milk	104	106	–	–	4.48	4.30	96.0
Almond milk	102	106	–	–	4.48	4.37	97.5
					13.2	12.8	97.0
Apple juice	104	108	–	–	13.2	12.9	97.7
Mandarin juice	101	104	–	–	4.48 13.2	4.23 12.9	94.4 97.7

* Current responses were registered in real samples diluted with 0.05 mol L⁻¹ SA buffer (pH 6.0), in the presence of 6 mmol L⁻¹ PMS at +0.3 V vs. Ag/AgCl/KCl_{(3 mol L}⁻¹₎; n—number of measurements.