Ecological Systems and Devices Annotation << Back INHIBITION BY FULLERENE AND SHUNGITE FROM THE TOXIC EFFECT OF POTASSIUM DICHROMATE ON THE GROWTH OF ALGAE G.A. Dallakyan The influence of fullerene 5 mg/l, shungite 100 g/l and potassium bichromate at a concentration of 3 mg/l on the culture of green chlorococcal microalga Scenedesmus quadricauda (Turp.) Bréb. When exposed to potassium bichromate, the growth of the culture was inhibited throughout the entire 20-day experiment. It has been shown that with the combined effect of potassium dichromate 3 mg/l and fullerene 5 mg/l or potassium dichromate 3 mg/l of shungite 100 g/l on the population of Scenedesmus guadricauda, the toxic effect of potassium bichromate is reduced. In the presence of fullerene and shungite, the proportion of living cells in the culture was at the control level. With the combined action of potassium bichromate and shungite or fullerene, the proportion of living cells was 98–99 % throughout the entire experiment. In the presence of potassium bichromate, only 92 %, while the cell size became smaller compared to the control. In all cases, with the simultaneous presence of shungite fullerene and potassium bichromate in the medium, algae cells grow better, while the efficiency of photosynthesis, the number of cells and the proportion of living cells become higher than in the presence of only potassium bichromate in the medium. Apparently, fullerene and shungite in the culture medium acts, on the one hand, as an antioxidant of free radicals, and on the other hand, it changes the redox state of the medium. This contributes to the stabilization of crop growth. Keywords: Scenedesmus guadricauda, potassium dichromate, fullerene, shungt, cell viability, photosynthesis efficiency. DOI: 10.25791/esip.4.2023.1366 Pp. 67-72.