INFLUENCE OF HYDROGEN SULFIDE ON SACCHAROMYCES CEREVISIAE
The growth of Saccharomyces cerevisiae in media with different hydrogen sulfide concentrations is investigated. At concentration of 9.4 mM hydrogen sulfide fully inhibited the growth of yeasts under aerobic and anaerobic conditions. On electron- microscopic photographs of the cells, treated with hydrogen sulfide, the changes in the cell wall, cytoplasmic membrane and vacuole are observed.Cells treatment by hydrogen sulfide at concentration of 31.3 mM for 45 min caused 16 % of yeasts’ survival. The auxotrophic mutants have been isolated from cells treated by hydrogen sulfide.