The use of the co-cultures of the yeasts Pichia
angusta, Arxula adeninivorans and Debaryomyces hansenii immobilized in N-vinylpyrrolidone-modified
poly(vinyl alcohol) enabled developing a BOD biosensor possessing the characteristics not inferior to
those in the known biosensors. The results are indicative of a potential of using these co-cultures as the
receptor element base in prototype models of instruments for broad application.