4. CONCLUSIONS
The present study demonstrates the universal printing platform for biosensors based on such important biochemical agents as oxidases. The approach of applying sensitive titania layer by inkjet printing and creating of chromogenic universal substrate for oxidase biosensors provides a reliable alternative to existing methods of biosensors based on the cascade of enzymatic reactions. A distinctive feature of the study is to fabricate a biosensor using only printing technology that makes these systems suitable for scale-up production of biosensors in roll-to-roll manner. Universal approaches of applying materials on the substrate demonstrated in the study are the basis for the creation of biosensors for physiological concentrations of glucose and cholesterol.