Biosensor analyzer for BOD index express control on the basis of the yeast microorganisms Candida maltosa, Candida blankii, and Debaryomyces hansenii

The parameters of biosensors based on the yeast strains Candida maltosa VKM Y-2359, Candida blankii VKM Y-2675, and Debaryomyces hansenii VKM Y-2482 for biochemical oxygen demand (BOD) detection are compared. The catalytic activity of the strains was analyzed in relation to the growth phase. The possibility of using D. hansenii as a basis for receptor element of a biosensor for BOD detection in municipal and biotechnological wastewaters was shown.

► We use yeasts as the basis of a BOD biosensor.
► The yeasts are Candida maltosa, Candida blankii and Debaryomyces hansenii.
► We determine the characteristics of BOD biosensors based on the chosen yeasts.
► We show that the D. hansenii based sensor has the broadest substrate specificity.