Measurement of glucose concentrations of potato extract using a blood glucose test strip

A blood glucose test strip integrated into a modified circuit with a user-designed converter was evaluated as an efficient means to measure the amount of glucose in potato extract. The amount of glucose in potato extract was established using the HPLC method and the experimental monitor. The resulting output from the enzymatic reaction of the test strip was observed to be linear for potato extract with glucose concentrations from 5 to 50 mmol/L. A regression equation was developed using data from four replications of ten varieties of potatoes having different sugar levels. Determinations of glucose concentration with the experimental monitor and YSI on potato extract compared favourably (r = 0.87).