Biopolym. Cell. 2003; 19(6):553-557.
http://dx.doi.org/10.7124/bc.000683
Bioorganic Chemistry
Application of enzyme biosensor base on pH-sensitive field transistors for determination of glucose concentration in potato juice
1Skryshevska I. V., 1Korpan Y. I., 1Soldatkin A. P.
  1. Institute of Molecular Biology and Genetics, NAS of Ukraine
    150, Akademika Zabolotnoho Str., Kyiv, Ukraine, 03680

Abstract

A method for potato quality monitoring based on the determination of glucose concentration in potato juice using pH-sensitive field effect transistors with immobilized glucose oxidase has been proposed. Glucose concentration in potato juice was determined by a method of standard additions using the linear part of a calibration curve within dynamic range of 0.2—2 mM glucose concentration. To estimate the accuracy of glucose detection by the biosensor proposed, the measurements were also performed by a colorimetric method («Diagluc» enzymatic kit, Ukraine). A good correlation between these techniques is obtained.
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