Krupey K. Bioindication of water polluted by pigment-synthesizing yeasts

Dissertation is sanctified to the study of bioindication possibilities of carotenoid-synthesizing yeasts at the terms of contamination of water by the ions of heavy metals and other pollutants. Worked out method of determination of water polluted by heavy metals. The results of the research showed that the Rhodotorula genus yeasts react on certain metal concentrations' presence in the medium by the loss of pigments and by the growth delay. Obtained results make it possible to recommend the yeasts Rh. rubra RA-10, Rh. aurantiaca Y-1193, Rh. aurantiaca Y-1195 and Rh. glutinis Y-1335 for the usage in the bioindication of contamination of water by ions of metals, in particular such as Al, Cr, Ni, Cu, Zn, Ag, Cd. The extended information is about the reliable mechanisms of blocking the pigment synthesis. TBA-activity products in yeast cells increase correspondingly to the increase of concentration of Zinc and Copper in a medium, and this tendency allows to do supposition about the defeat of carotenoid-synthesizing areas on membranes by free radicals. The research confirms the efficiency of the use of artificial nozzle with the immobilized carotenoid-synthesizing yeasts of Rh. glutinis Y-1333 for bioindication of quality of wastewater of plant is JSC "Motor Sich" during the simultaneous cleaning of effluents from oil products and ions of Nickel.