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Published on: February 1, 2018
Electrochemical biosensors based on multienzyme systems: Main groups, advantages and limitations - A review
I S Kucherenko1, O O Soldatkin2, S V Dzyadevych2
1Department of Biomolecular Electronics, Institute of Molecular Biology and Genetics of the National Academy of Sciences of Ukraine, Zabolotnogo Street 150, 03148, Kyiv, Ukraine.
Abstract:
In the review, the principles and main purposes of using multienzyme systems in electrochemical biosensors are analyzed. Coupling several enzymes allows an extension of the spectrum of detectable substances, an increase in the biosensor sensitivity (in some cases, by several orders of magnitude), and an improvement of the biosensor selectivity, as showed on the examples of amperometric, potentiometric, and conductometric biosensors. The biosensors based on cascade, cyclic and competitive enzyme systems are described alongside principles of function, advantages, disadvantages and practical use for real sample analyses in various application areas (food production and quality control, clinical diagnostics, environmental monitoring). The complications and restrictions regarding the development of multienzyme biosensors are evaluated. The recommendations on the reasonability of elaboration of novel multienzyme biosensors are given.
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