Journal of Analytical Methods in Chemistry

Research Article

Design of Amperometric Biosensors for the Detection of Glucose Prepared by Immobilization of Glucose Oxidase on Conducting (Poly)Thiophene Films

Table 3

Mean values of glucose concentration and standard deviation in three different fruit juices (pear, peach, and apricot) with two different GOx biosensors ( replicates for each sample).
JuiceGlucose concentration (mM)Y = aX + b; R2
Poly(2,2′-BT)/GOxPoly(4,4′-bBT)/GOxPoly(2,2′-BT)/GOxPoly(4,4′-bBT)/GOx
Pear180 ± 20170 ± 10a = 1.4 × 10−3a = 4.1 × 10−4
b = 3 × 10−6b = 6 × 10−7
R2 = 0.994R2 = 0.996
Peach190 ± 10220 ± 30a = 1.1 × 10−3a = 3.2 × 10−4
b = 2 × 10−6b = 5 × 10−7
R2 = 0.999R2 = 0.999
Apricot240 ± 20280 ± 50a = 3.0 × 10−4a = 4.3 × 10−4
b = 3 × 10−6b = 7 × 10−7
R2 = 0.999R2 = 0.999