The main purpose of the research conducted within the frame of this doctoral thesis was
to develop new electroanalytical approaches and methods applicable in food and
pharmaceutical analysis. Due to the importance of the presence of lipophilic vitamins in food
and pharmaceutical formulations, the simultaneous detection of lipophilic vitamins (A, E and
K), and related compounds had been the primary goal of the dissertation. Since lipophilic
analytes are usually occurring in complex matrices, the simplification of real samples treatment
prior the analysis and elimination of toxic organic solvents in comparison with the previous
methods have been the other benefits of this work. In addition, the development of low-cost
and easy-to-use disposable sensors for the determination of selected biologically active
compounds was yet another target of the whole research.