Preparation of biosensors with amperometric and optical principle of detection; immunosensors, electrode modification; fermentation monitoring, protein detection.

Dispersion of single walled carbon nanotubes. Comparison of different dispersing strategies for preparation of modified electrodes toward hydrogen peroxide detection
Tkac J., Ruzgas T:
Electrochemistry Communications 8: 899-903 (2006)

Intracellular monitoring of superoxide dismutase expression in an Escherichia coli fed-batch cultivation using on-line disruption with at-line surface plasmon resonance detection
Vostiar I., Tkac J., Mandenius, C.-F.:
Analytical Biochemistry 342: 152-159 (2005)

Direct electron transfer between copper-containing proteins and electrodes
Shleev S., Tkac J., Christenson A., Ruzgas T., Yaropolov A. I., Whittaker J. W., Gorton L.:
Biosensors and Bioelectronics 20: 2517-2554 (2005) - A review paper

Improved selectivity of microbial biosensor using membrane coating. Application to the analysis of ethanol during fermentation.
Tkac J., Vostiar I., Gorton L., Gemeiner P., Sturdik E.:
Biosensors and Bioelectronics 18: 1125-1134 (2003)

Novel glucose non-interference biosensor for lactose detection based on galactose oxidase-peroxidase with and without co-immobilised N-galactosidase
Tkac J., Sturdik E., Gemeiner P.:
Analyst 125: 1285-1289 (2000)

Biosensors with immobilised microbial cells using amperometric and thermal detection principles
Tkac J., Stefuca V., Gemeiner P.:
In the book: Focus on Biotechnology, vol 8, Fundamentals of Cell Immobilisation Biotechnology. Springer, 2005.

Direct electrochemistry of proteins and enzymes
Ferapontova E.E., Shleev S., Ruzgas T., Stoica L., Christenson A., Tkac J., Gorton L.:
In the book: Electrochemistry of Nucleic Acids and Proteins towards Electrochemical Sensors for Genomics and Proteomics. Elsevier, 2005.