The design principles for the study and construction of the innovative bioreactor were based on the need to conduct experiments with flexibility in
choosing different processes and having full control over them. As an innovative design result the bioreactor offers the advantages
of different types of bioreactors in one. The operation of the bioreactor allows solid state fermentation using flat bed or rotating drum process with
controllable rotation or no rotation at all. The temperature, humidity and aeration of the system is done automatically according to the needs of the