Fig. 7.

Absorption spectra in the UV region of the water medium after rinsing the D.v-Cu.S (A) and D.v-Cu.R (B) cells, the electrical conductivity of the water medium after rinsing the D.v-Cu.S (1) and D.v-Cu cells. R (2) (C) and copper content in the water medium after rinsing these strains. To rinse the cells from the salts contained in the culture medium, 10 ml of sterile distilled water were added to cell sediments of equal weight, stirred for 5 min, precipitated again by centrifugation at 3000g, and the studied parameters were determined in the water phase.